This given statement, as a result of the Ordovician Mass Extinction, that many reef-building organisms went extinct, but reefs recovered in only a few hundred thousand years is false.
What happened in the Ordovician mass extinction?
The Ordovician-Silurian extinction, which occurred 443 million years ago, resulted in the destruction of 85% of all species on Earth. The many marine species living in warm, shallow coastal waters were severely harmed, most likely as a result of global cooling and declining sea levels. There were many different types of animals affected by this extinction, including brachiopods, corals, trilobites, echinoderms, and mollusks. Species that were unique to the eastern United States were particularly vulnerable.
The Late Ordovician glacier, which quickly extended over Gondwana at the beginning of the Hirnantian and changed the Earth's temperature from a greenhouse to an icehouse, is widely blamed for this extinction pulse.
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An infant has a strange rash. Some of the rash is swabbed and examined under the microscope. A mass of threadlike structures is observed. How should this infection be treated
An infant has a strange rash. Some of the rash is swabbed and examined under the microscope. A mass of threadlike structures is observed. So, this infection be treated with an anti-fungal cream
OTC creams will deal with the infection (e.g., Lamisil, Lotrimin, Micatin, Tinactin), however, in some cases oral drugs are fundamental.
In infants, Fungi can cause superficial infection, i.e., on skin, nails, and hair like oral thrush, candida diaper rash, fungal infection, and so forth, are different kinds of superficial fungal infections, subcutaneous contagious disease in tissues under the skin and finally it causes systemic infection in more profound tissues.
The primary structure of most fungi consists of fine, spreading, normally dull threads like structures called hyphae. Every fungus will have immense quantities of these hyphae, all interlacing to make up a tangled web called the mycelium.
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The most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is
Most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is whether the permeant ion's reversal potential is positive or negative to the threshold.
What are ion channels?Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore.Their functions include establishing a resting membrane potential, shaping action potentials and other electrical signals by gating the flow of ions across the cell membrane, controlling the flow of ions across secretory and epithelial cells, and regulating cell volume. Ion channels are one of the two classes of ionophore proteins, the other being ion transporters.To learn more about Ion channels,
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thick mucous gland secretions, elevated sweat electrolytes, meconium ileus, and diffculty maintaining and gaining weight are associated with which autosomal recessive disorder
thick mucous gland secretions, elevated sweat electrolytes, meconium ileus, and difficulty maintaining and gaining weight are associated with which autosomal recessive disorder Cystic fibrosis.
What is cystic fibrosis?The lungs, digestive system, and other body organs are severely harmed by cystic fibrosis (CF), a genetic condition. The cells that make mucus, perspiration, and digestive fluids are impacted by cystic fibrosis. Normally, these produced fluids are slick and thin.It is brought on by a gene defect that interferes with how salt and water enter and exit cells. This can lead to a build-up of thick, sticky mucus in the body's tubes and passages, particularly the lungs and digestive system, along with recurrent infections.As a result of cystic fibrosis, the lungs, pancreas, and intestines get clogged with thick mucus.
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Select the positive impacts of technology on animal agriculture.
more hygienic and humane practices
improved fertility of livestock
stronger and leaner livestock
introduction of new vegetation
animal immunity to diseases
increased demand for meat
insect-resistant crops
Answer:
improved fertility of livestock.stronger and leaner livestock.animal immunity to diseases.Explanation:
Whe you talk of Animal agriculture you are referring to those practices of breeding animals for the production of animal products and also for recreational uses/purposes. Technology has impacted animal agriculture positively through:
improved fertility of livestock. of livestock.stronger and leaner livestock. of livestock.stronger and leaner livestock.animal immunity to diseases.Because extremophiles are hard to culture outside of their native environments, how do scientists classify and identify specific species?.
They use DNA sequencing to identify species via genetic differences.
What is the significance of DNA sequencing?
The four chemical "bases" that make up the DNA molecule must be identified in the correct order in order to sequence DNA. The sequence provides information to scientists about the type of genetic data that is contained in a certain DNA segment.
For instance, scientists can utilize sequence data to identify the DNA segments that contain genes and the segments that carry regulatory instructions that switch genes on and off. Furthermore, and this is crucial, sequencing data might point out variations in a gene that might be harmful.
Large DNA lengths, 1 million bases or more, from various individuals can now be compared swiftly and affordably by researchers. Such comparisons can reveal a wealth of information regarding how inheritance affects illness susceptibility and how the body reacts to environmental factors. The potential for diagnostics and treatments is also greatly increased by the faster and more affordable genome sequencing.
The biology of development and evolution can also be better understood by comparing the genomic sequences of other animals and species, like yeast and chimpanzees.
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The coagulation pathway that begins with the release of tissue factor iii from damaged tissue is:_______
The coagulation pathways that begins with the release of tissue factor from damage tissues is Extrinsic pathways. Its is a pathway of blood coagulation activated by endothelial tissue .
The clotting of blood is two pathways - intrinsic and extrinsic pathways.Extrinsic pathway is activated by any external trauma or external injury which causes blood to escape from the tissues.
Coagulation pathways is path which allows for rapid healing of injury and prevent from bleeding or other bacterial infection.coagulation also known as clotting , the process by which blood change into gel from liquid.This mechanism of coagulation involves activation, adhesion and aggregation.
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The common bile duct merges with the pancreatic duct, forming an expansion called the:_______
Answer:
Explanation:
hepatopancreatic ampulla
The patella is a(n) _____________bone found in the ___________________. (2 points)
long; appendicular skeleton
irregular; appendicular skeleton
flat; axial skeleton
short; axial skeleton
It's not in the axial skeleton, so it has to be one of the first two answer choices! Both are technically wrong, though! The patella is NEITHER long NOR irregular. It's sesamoid! So which answer should I choose to get it marked correct in the test??? Can someone who took it help me please!
How does hail form? what factors govern the ultimate size of hailstones?
Hail is formed when the water droplets freeze together in the cold upper region of the thundercloud. These lumps of ice are called hailstones. Most hailstones are between 5 mm and 15 cm in diameter and can be round or jagged. Hail stones are not frozen raindrops.
Factors that govern the ultimate size of hailstones are hail has strong storm clouds, especially strong heat, high liquid water content, large vertical range, large water droplets, and many cloud layers are formed by clouds below 0 ° C (32 ° F). This type of intense heat may also indicate the presence of a tornado.
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Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is homozygous and has green-colored pods?
The cross between parent who is heterozygous and has yellow-colored pods and the other is h0mozygous and has green-colored pods is Yy x yy; option A.
What is a heterozygous cross?A heterozygous cross is a cross is a cross between one or two parents who have different copies of alleles of the same gene.
Assuming Y for yellow is dominant over y for green;
The cross between parent who is heterozygous and has yellow-colored pods and the other is h0mozygous and has green-colored pods is represented below:
Yy x yy = Yy, Yy, yy, yy
In conclusion, the offspring will be two heterozygous yellow-colored pods and two h0mozygous that has green-colored pods.
In conclusion, the offspring of the heterozygous and h0m0zygous parents will have yellow and green pods.
Note that the complete question is as follows:
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yy
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yyYY ´ yy
Which represents the cross between parent plants if one is heterozygous and has yellow-colored pods and the other is hom0zygous and has green-colored pods?Yy ´ yyYY ´ yyYy ´ Yy
yy ´ yy
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All members of Kingdom Protista are ____________ , since their cell(s) possess a nucleus and membrane-bound organelles. Protista species can be distinguished from Kingdom Fungi by the lack of ____________ in their cell walls, and from Kingdom Plantae by their ____________ reproductive structures.
All members of Kingdom Protista are eukaryotes, since their cell(s) possess a nucleus and membrane-bound organelles. Protista species can be distinguished from Kingdom Fungi by the lack of chitin in their cell walls, and from Kingdom Plantae by their sexual reproductive structures.
What are protists?Protists are simple eukaryotic organisms that are neither plants nor animals or fungi.Protists are unicellular in nature but can also be found as a colony of cells.Most protists live in water, damp terrestrial environments or even as parasites.The primary feature of all protists is that they are eukaryotic organisms. Protists exhibit locomotion through cilia and flagella. A few organisms belonging to the kingdom Protista have pseudopodia that help them to move.Protista reproduces by asexual means. The sexual method of reproduction is extremely rare and occurs only during times of stress.To learn more about protists,
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Children's steady growth, brain maturation, and intellectual advances make middle childhood a time for more _____.
Children's steady growth, brain maturation and intellectual advances help in making the middle childhood a time for more independence.
The middle childhood ranges from six to twelve years of age and is a very important phase for the growth and development of a child. It is in this stage of life that a child gains social, cognitive, emotional and physical advancements.
The middle childhood basically lays the foundation for adulthood. The brain maturation in this phase involves the growth of certain structures like the frontal lobe which enhances learning and decision making. Steady growth and all the intellectual advancements aid in generating a sense of autonomy and independence in children. This helps in refining the child's capabilities.
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Cellular respiration extracts energy from food and takes place in the organelle called a:____________
Cellular respiration extracts energy from food and takes place in the organelle called a mitochondria.
It is made up of an outer membrane, an inner membrane, and a gooey matrix inside.
Mitochondria is also known as the "powerhouse". It is also involved in the Krebs cycle and oxidative phosphorylation phases of the respiration.
It is an oval-shaped organelle found in most of the eukaryotic cells. Its membranes are specialized for aerobic respiration. As the site of cellular respiration, mitochondria gets to transform molecules such as glucose into energy molecule known as ATP (adenosine triphosphate).
The electron transport chain and most ATP synthesis depends on the compartments created by the inner membrane of the mitochondria.
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Using whole blood as the specimen of choice in an automated analytical system Group of answer choices essentially eliminates specimen preparation time. allows the operator to use a secondary tube for analysis. keeps the specimen from undergoing degradation. allows for the avoidance of carry-over.
Using whole blood as the specimen essentially eliminates specimen preparation time.
Whole Blood
Whole blood contains both the liquid fraction and the cellular elements. The liquid fraction is the blood plasma and the cellular components are RBCs, WBCs, clotting factors, etc. The whole blood is drawn from a person and transferred to plain tubes with different color tops. The color tops indicate what the contents inside the tube are.
Whole blood is used for running various tests as it reduces the time spent preparing individual specimens. It also helps to reduce errors and limits human input to a bare minimum since the system is highly automated. Also, the whole blood sample contains all the elements of blood which allows the investigator to perform a multitude of tests least of which includes the complete blood count test.
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If sperm do not exit through the vas, either because the man has had a vasectomy or has not ejaculated, in what region of the testis do they remain
The epididymis region of the testis do they remain.
What about epididymis?Each testis has a little, tightly coiled tube linked to it (the male sex glands that produce sperm). Male reproductive cells known as sperm travel from the testicles into the epididymis, where they mature and are then stored.The epididymis' most obvious job is to move sperm from the rete testes to the vas deferens.The immature sperm from the testis is received by the tortuously coiled epididymis, which stores it for several days. Sperm is forcibly discharged into the deferent duct during ejaculation from the epididymis' tail.Sperm is transported from the testes and stored in the long, coiled epididymis. It is seen as a curving structure on each testis' posterior (rear) edge. There are three parts to it.Learn more about epididymis here:
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A dull percussion note forward of the left midaxillary line around 10th rib in the abdomen is:_______.
A dull percussion note forward of the left maxillary line around 20th rib in the abdomen is indicative of splenetic enlargement.
Enlarged spleen can caused by any infection, or other liver diseases , blood diseases characterized by abnormal blood cells, problems with the lymph system, or other conditions.It can be reduced by by the number of healthy red blood cells , platelets and white cells in your bloodstream, leading to more infection again and again.
Depending on the severity the engaged spleen may return to normal size and function when the underlying disease is treated or resolved.Dullness is the normal sound when tissues that are dense such as liver.
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what is animal tissue ?.
Answer:
animal tissues are made up of animal cell that have been gathered together
Animal tissues may be divided into four categories: epithelium (which lines cavities and covers organs), connective (which makes ligaments and tendons), nervous (which is formed of neurons and transmits electricity), and muscular (which produces smooth and striated muscles).
In a biological sense, the tissue is simply described as an ensemble cast of comparable cells from the same origins that work together to perform a single function. Animal tissues are made up of a collection of cells. The origin, purpose, and structure of these tissues differ. The epithelial, connective, muscular, and nerve tissues are the four major tissues found in an animal's body. Let's take a quick look at each kind of animal tissue.
Types of Animal TissueEpithelial tissue
All internal and exterior organ surfaces are protected by epithelial tissue. A collection of tissues often referred to as epithelium lines every layer and organ in the body. This animal tissue is very permeable because it is crucial for the movement of chemicals between cells and supports osmoregulation. The epithelium is classified into two types: simple epithelium and complex epithelium, depending on how many layers there are. The primary roles of epithelial tissue are absorption, sensing, secretion, and protection. They serve as a barrier to prevent harm and the entry of diseases like viruses, bacteria, etc. Some epithelial cells also absorb nutrients, release chemicals like digestive juices, and stop the body from losing water.
Connective tissue
As its name implies, connective tissue serves to link or divide other bodily tissues or organs. Fibrous connective tissue, which essentially binds bones together, is strong and may be found in places like ligaments. Given that they comprise blood, adipose tissue, bone, and cartilage, connective tissues are really the most prevalent tissues in complex animals. Collagen and elastin are structural proteins that are secreted by all connective tissues, with the exception of blood. Loose connective tissue, dense connective tissue, and specialized connective tissue are some of the several forms of connective tissues.
Muscular tissue
The three categories of this animal tissue are cardiac, smooth, and skeletal. The contraction of skeletal components creates the voluntary kind known as skeletal. Involuntary smooth tissue can be seen in the blood vessel and internal organ walls. The final kind, cardiac muscle, is only present in the heart's walls and is involuntary in nature. It so happens that the body's reactions to shifting situations are under the direction of the neural or nervous tissues. The building blocks of the nervous system are neurons, or excitable cells. It is made up of specialized cells that take in inputs and carry impulses to and from various bodily areas. Processing and information transport are among its capabilities.
Injury to cervical vertebra c 3-c 4 is particularly problematic because ________.
A. part of the brain stem is located hereB. several ganglia are near this region that serve the heartC. the phrenic nerve that serves the diaphragm receives its fibers from hereD. the greater auricular nerve that serve the parotid gland receive there fibers from here
Injury to cervical vertebra c 3-c 4 is particularly problematic because C) the phrenic nerve that serves the diaphragm receives its fibers from here.
The top portion of the spinal cord, which is made up of the seven cervical vertebrae (C-1 to C-7) in the neck, is located in the cervical region of the spine.Cervical spinal cord injuries are often the most serious kind of spinal cord injury because they affect a bigger area of the body and are closer to the brain. Tetraplegia or quadriplegia, which means there is little to no feeling or movement below the shoulders or neck, will develop from a cervical injury. The cervical spine's middle segment is made up of the C3, C4, and C5 vertebrae. Injuries to the cervical vertebrae C3–C5 are frequently severe because they inflict more harm to the central nervous system.learn more about cervical vertebra here: https://brainly.com/question/20840479
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A scientist completes a new investigation and announces that she has developed a new theory. Which of the following statements is most likely true about her investigation?
She discovered a law of science.
She has consensus on a new theory.
She will not need to repeat the experiment.
She may have solved a problem, but more data is needed.
it may be B C or D
The statement 'She may have solved a problem, but more data is needed' is most likely true about her investigation.
What is a scientific theory?A scientific theory is a well-sustained body of knowledge obtained by observing the real world, collecting empirical evidence and applying the scientific method.
The scientific method represents the procedure to test hypotheses that eventually generate a predictive body of knowledge which we call scientific theory.
The scientific theories generally are tested and confirmed repeated times by using different bodies of data and scientific evidence.
In conclusion, the statement 'she may have solved a problem, but more data is needed' is true about her investigation.
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Which condition is the basis for a species to be reproductively isolated from other members?
It does not share its habitat with related species is the basis for a species to be reproductively isolated from other members.
How can species become reproductively isolated?
The prezygotic and postzygotic barriers maintain species separation. These barriers, which take effect both before and after the development of a zygote, prevent creatures of different species from mating to generate fruitful offspring. These obstacles keep species' reproductive isolation in place.
The toad species Bufo americanus and Bufo fowleri provide an illustration of reproductive isolation brought on by variations in the mating season. In a lab setting, it is possible to successfully cross these species, resulting in wholesome, fertile hybrids. Prezygotic and postzygotic reproductive isolation are the two basic subcategories. Before a zygote may be formed, prezygotic isolation takes place. Most of the time, mating never even happens. Spatial, behavioral, mechanical, and temporal isolation are all examples of prezygotic isolation.
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A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for:.
Hydrocephalus
What is hydrocephalus?An excessive buildup of cerebrospinal fluid (CSF), the clear fluid that surrounds the brain and spinal cord, is the main symptom of the illness known as hydrocephalus. The ventricles in the brain, which are empty areas, enlarge abnormally as a result of this excessive accumulation. Pressure on the brain's tissues as a result of this dilatation could be detrimental. Both congenital and acquired hydrocephalus are possible.
How is hydrocephalus treated?The surgical installation of a shunt device is the most common treatment for hydrocephalus. With the help of this system, CSF (cerebrospinal fluid) is switched from one location in the central nervous system to another one where it can be absorbed as part of the circulatory system. A different method known as third ventriculostomy can be used to treat a small number of patients. The third ventricle's floor is punctured during this surgery to allow the CSF to pass through the blockage and move toward the area of resorption near the brain's surface.
I understand the question you are looking for is this:
A bypass or shunt operation that diverts the cerebrospinal fluid is treatment for
a. meningitis.
b. hydrocephalus.
c. encephalitis.
d. cerebral palsy.
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What are the two major factors determining the distribution of terrestrial biomes? what are the two major factors determining the distribution of terrestrial biomes?
Temperature, humidity and elevation are the two major factors determining the distribution of terrestrial biomes.
A region of land with a similar climate and comparable plant and animal communities is referred to as a terrestrial biome. Different terrestrial biomes are typically described in terms of the trees, shrubs, and grasses that inhabit them.The Terrestrial biome type is influenced by variables including latitude, humidity, and elevation:A Terrestrial biome's latitude indicates how far it is from the equator. You will find the Arctic, boreal, temperate, subtropical, and tropical biomes as you move from the poles to the equatorThe amount of water in the air is known as humidity. Humid air is defined as having a high concentration of water vapor. The biomes will be referred to as semi-humid, semi-arid, or arid as we move away from the most humid environment (the driest).Elevation refers to the elevation of land above sea level. It becomes chilly.
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What is the main difference between prokaryotic and eukaryotic cells? the presence or absence of a ______
The main difference between prokaryotic and eukaryotic cells is that Eukaryotic cells have a nucleus, a membrane-bound chamber where DNA is stored, while prokaryotic cells don't.
This is the feature that formally separates the two groups. Eukaryotes usually have other membrane-bound organelles in addition to the nucleus, while prokaryotes don't.
Cells in general are small, but prokaryotic cells are really small. Typical prokaryotic cells range from 0.1 to 5.0 micrometers (μm) in diameter and are significantly smaller than eukaryotic cells, which usually have diameters ranging from 10 to 100 μm.
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Provide four major drawbacks to using fossil fuels, such as coal and natural gas, in alberta thermal power stations.
The four major drawbacks to using fossil fuels, such as coal and natural gas, in alberta thermal power stations is climate change, not renewable, unsustainable and biological accidents.
What is fossil fuel?
Fossil energy is all that comes from the burning of so-called fossil fuels. These fuels are formed by the remains of plant and animal organisms accumulated in the subsoil of our planet.
climate change; this is because when they are burned they release into the atmosphere the gases responsible for the greenhouse effect.they are not renewable; there are finite resources available and its reserves are not replenished naturally.unsustainable, which means that any burn of fossing fuels contribute to the pollution of the air by CO2.biological accidents over the time, such as pipeline leaks, exploding drilling platforms, and the dumping of millions of gallons of oil into the ocean.See more about energy at: brainly.com/question/1932868
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How does a dog fulfill the three points of the cell theory?
A dog fulfilled the three points of the cell theory through the healing of the cuts it encountered when playing.
What is a Cell?This is defined as the simplest or basic unit of life and the three points of cell theory include:
All organisms are made of one or more cellsThe cell is the basic unit of all organisms.All cells come from existing cells.The cut the dog had healed as a result of the formation of the cells from existing cells through mitosis thereby resulting in the healing.
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The process of combining two incomplete proteins to make a compete protein is called?
Answer:
Mutual supplementation
Explanation:
If you suspect corrupted system files are causing issues, what command can be run to verify and restore the corrupted files?
The command can be run to verify and restore the corrupted files SFC /scan now.
Regardless of the reason, it might be, in case you encounter any associated troubles, windows 10 consists of the System File Checker (SFC), a command-line device designed to experiment with the integrity and repair missing or corrupted machine files with running replacements.
Gadget record Checker is an application in Microsoft windows that permits customers to scan for and repair corrupted windows gadget files.
First, log into windows 10. next, click on the quest button on the lowest left, and type the command prompt. while you see the Command set off program indexed, right-click it, then click Run as Administrator. The System File Checker will then begin strolling.
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How would the sensory homunculus of the giraffe be different than a human's?
Homunculi of various morphologies can be seen in several species as a result of their divergent evolutionary histories. So there are differences in the sensory homunculus between giraffes and humans.
The structural properties of sensory homunculus
The sensory homunculus, which is located in the cerebral cortex, is a topographic representation of the sensory acuity of the body.Typically, this topograph contains body components depicted along the parietal lobe's postcentral gyrus surface. The sensory homunculus' topology matches the body's opposite side. This region corresponds to the sensory region of the lower extremities and genitalia, starting from the medial aspect of the postcentral gyrus. The superior to superolateral portions of the postcentral gyrus, which run farther laterally along the gyrus, correspond to the neck, shoulder, and torso. This region corresponds to the upper extremities and hand and is located on the lateral side of the postcentral gyrus. The inferolateral region of the postcentral gyrus corresponds to the facial and bulbar structures. Surprisingly, the face is the part of the sensory homunculus that occupies the most significant space.To know more about sensory homunculus
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2. What structure caused rotifers to be called wheel animals or wheel bearers? the foot, the corona ,the brain, the stomach
The name "rotifer" emanated from the Latin term meaning "wheel-bearer"; this refers to the crown of cilia around the mouth of the rotifer. The rapid action of the cilia in some species causes them to seem to whirl like a wheel.
What is Rotifer?The rotifers commonly called wheel animals or wheel animalcules drive up a phylum of microscopic and near-microscopic pseudocoelomate animals.
Some rotifers are free swimming and truly planktonic, others drive by inchworms along a substrate, and some are sessile, living inside tubes or thick holdfasts that are attached to a substrate. Approximately 25 species are colonial either sessile or planktonic. Rotifers are an essential part of the freshwater zooplankton, living in a significant food source and with multiple species also contributing to the deterioration of soil organic issues.To learn more about Rotifer, refer:
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Answer:
The Corona.
Explanation:
Cilia on the Corona is what makes the Rotifer move like a wheel.
Secondary lymphoid organs, such as the lymph nodes, spleen, and mucosa-associated lymphoid tissues, each have distinct features that are important for their role in initiating immune responses focused on different anatomical compartments (i.e., the peripheral tissues, the blood, or the gastrointestinal tract, respectively). Yet these organs share some overall structural features, such as distinct
One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.
Naive T cells can develop into effector and memory T cells, which remove the triggering antigen in peripheral tissues and produce protective immunity, with the help of secondary lymphoid tissues.
The spleen, which collects bloodborne antigens, the lymph nodes, which deal with antigens found in peripheral tissues, and the mucosa-associated, bronchial-associated, and gut-associated lymphoid tissues where antigens from epithelial surfaces are collected are examples of secondary lymphoid organs.
Therefore, One major difference between these secondary lymphoid organs is the mechanism by which antigens or pathogens enter the organ.
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