The definition of a recessive allele is Option D. whose phenotypic effect is only expressed when present in two copies.
The best description of a recessive allele is that it does now not decide the phenotype while a dominant allele for the identical trait is a gift. A type of allele that when gifted on its personal will not have an effect on the man or woman. copies of the allele want to be a gift for the phenotype to be expressed.
People inherit variations of each gene, referred to as alleles, from each parent. In the case of a recessive trait, the alleles of the trait-causing gene are the same, and both (recessive) alleles ought to be gifted to express the trait. A recessive allele does now not produce a trait at all when the handiest copy is present.
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the quotient of a number and the sum of 2 and 4
Step-by-step explanation:
X is the number
X/2 is quotient of a number and 2
5 + X/2 = 15
Multiply all terms by 2 to eliminate fractions
10 + X = 30
X = 20
number is 20
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What organ system in the human body contains the pituitary gland, hypothalamus gland, and thyroid gland?.
Answer:
endocrine system
Explanation:
hope this helps. :))
To investigate how the vegetation in a coastal ecosystem changes with distance from
the high tide mark, the BEST sampling technique would be
(A) a line transect placed across the ecosystem
(B) regular observation of the ecosystem
(C) a quadrat placed randomly within the ecosystem
(D) a piece of string placed across the ecosystem
which gives results obtained
A line transect placed across the ecosystem is the best sampling technique.
What kind of vegetation is there along the coast?
Maritime forests, scrub thickets, grassy upland grasslands, freshwater swamps, freshwater marshes, mangrove swamps, saltwater marshes, and grassy or forested dunes are a few examples of common coastal vegetation environments.
What is line transect method?
As a guide for a sampling technique used to determine the distribution of organisms, a tape or string is laid along the ground in a straight line between two poles. Sampling is strictly limited to organisms that are in direct contact with the line.Another form of systematic sampling, similar to the belt transect, is the line transect. The line transect involves drawing a line through a habitat. It might be as easy as laying a string or rope across a habitat. In this strategy, the organisms that really touch the line are taken into account. As a result, only organisms that come into contact with the line can be sampled.Despite being similar to the belt transect, this approach only yields a little amount of data. It merely displays the changes occurring along the line. Species' existence and absence are noted. It displays a specific linear or gradient pattern along the line. With the aid of scale-drawn icons for various species, the data is presented as a diagram. The relative densities of different species cannot be determined via a line transect. The belt transect method is slower than this one, though.Hence line transect method is best used to investigate the vegetation of coastal system.
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when a body is dehydrated, water in the urinary bladder can be returned to the circulation directly. can be returned to the circulation after moving back into the kidneys. will still be expelled from the body in the urine
It will still be expelled from the body in the urine.
Your kidneys filter around 150 quarts of blood per day. The tubules return the majority of the water and other chemicals that pass through your glomeruli to your blood.
What about kidneys?They are primarily responsible for removing toxins from the blood and turning waste into urine. Around 160 grams of weight and one to one and a half liters of urine are excreted daily by each kidney. Every 24 hours, the two kidneys work together to filter 200 liters of fluid. You get pain in the region around your kidneys: On either side of your spine, close to the centre of your back, right below your ribs. The urinary tract, which includes your kidneys, produces and excretes urine from your body. In addition, you can experience the following symptoms as kidney disease worsens. Muscle cramps, a lack of appetite, swelling in the feet and ankles, dry, itchy skin, shortness of breath, trouble sleeping, and over- or under-urinating are all signs of motion sickness and nausea.Urine generated from waste products in your blood is one way that water aids kidney function. Additionally, drinking water keeps your blood vessels wide open, allowing blood to freely reach your kidneys and carry vital nutrients to them. But this delivery system has a harder time functioning if you become dehydrated.Learn more about kidneys here:
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Question Which type of sedimentary rock is formed from mineral grains precipitated by evaporation?
Responses:
A)chemical
B)intrusive
C)clastic
D)organic
Chemical sedimentary rock is formed from mineral grains precipitated by evaporation.
Option A is correct.
What kind of sedimentary rock is generated from mineral grains precipitated by evaporation?When the amount of water lost by evaporation surpasses the entire amount of water from rainfall and water influx from rivers and streams, layered crystalline sedimentary rocks known as evaporites are produced.
What kind of sedimentary rock precipitates right out of the water?Minerals that accumulate in saline water form chemical sedimentary rocks. The bodies of organisms are used to form organic sedimentary rocks. Particles the size of sand make up sandstone.
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Answer:
A)chemical.
Explanation:
it was correct on test
An example of an age-structure influence on human population size is that _____.
An example of an age-structure influence on human population size is that populations dominated by juveniles should experience rapid growth.
A populace's boom fee is strongly stimulated through the proportions of people of precise ages. With understanding of this age shape, populace boom may be extra appropriately predicted. Age structure data permit the fee of boom (or decline) to be related to a populace's degree of monetary development.
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A sequence of biotic changes that regenerate or create an ecological community is known as?.
A sequence of biotic changes that regenerate or create an ecological community is known as ecological succession.
Ecological succession is the process of change in an ecological community's species composition over time. The time frame can span several decades or fewer (for instance, following a wildfire). The community grows through an increase in complexity from a small number of pioneering plants and animals to a stable or self-sustaining climax community.
Succession is a process that occurs after a disturbance or the early colonization of a new environment. It involves changes to an ecological community that are more or less predictable and orderly. Secondary succession refers to succession that occurs after a pre-existing community has been disrupted, whereas primary succession refers to succession that starts in new environments with no impact from pre-existing groups.
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Which objective lens should you start with when attempting to locate something under the microscope?.
When attempting to locate something under the microscope, the objective lens that should be started with is 4X.
Objective lens are the one that are placed closest to the specimen when observing under the microscope. Their function is to gather light from the specimen and focus it towards a different type of lens called the ocular lens.
4X is the lowest magnification of the objective lenses. However, they have a larger field of view and therefore more of the specimen can be observed at once that allows the observer to locate the exact target. Due to poor magnification, the target may not be clearly visible, however it can be later watched in higher magnification.
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Based on the parent genotypes and using this Punnett Square, what percentage of offspring can display the recessive trait?
Responses
100%
100%
50%
50%
25%
25%
0% No offspring can display the recessive trait
Answer:
you need too go ask a tutor about this
Explanation:
Answer:0% No offspring can display the recessive trait
Explanation:
just did the test
Which type of rock would be described as layered pieces of other rocks and fossils?.
Mudstone, shale, and limestone can be called as sedimentary rock have probability to contain fossils. As the layers of sediments collects on top of each other, they forms physical timeline. The earliest layers, along with the organisms that were fossilized as they formed, are bottomless. The new layers are seen at the top.
Sedimentary rocks are formed by various tiny sediments or rocks. They are formed on or near the Earth's surface, in distinction to metamorphic and igneous rocks, which are developed deep within the Earth.
These are also described as stratified rocks as strata is organised in layered pieces.
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which lewis antigen(s) would be detected when phenotyping the red cells of an adult who has the le, se, and h genes?
Once the secretor (Se) genes is missing is the Lea antigen present upon that red blood cell membrane.
What are the 4 types of cells?Epithelial cells, which are closely bonded to one another, nerve impulses, which are specialized in communication, muscle cells, which are specialized in contraction, and connective tissue cells are the four primary cell types.
Where are cells found?Upon the earth, there really are living cells wherever unless it is sterile. If you run your hands along a smooth metal gate, you will likely find pollen, bacterial, fungal, and green algal cells (even wood is made up of dead plant cells).
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what are the different types of information? group of answer choices levels, forms, granularities levels, forms, data levels, formats, granularities data, formats, granularities
The different type of information are Levels, formats , granularities.
The levels app assigns a metabolic rating to each meals to can help you realize the way it affects your blood sugar. The app will even assign a rating for every day which helps you to appearance returned to see trends. You could see that I generally tend to eat worse starting Friday thru Sundays.
When you first sign up for degrees, the full value might be $398 USD.
There are numerous varieties of degrees inclusive of dumpy degree, Y degree, cushing's degree, tilting level, cooke's reversible degree and automated degree gadgets for leveling in surveying. The technique of measuring vertical distances in surveying is known as leveling.
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What occurs inside of a cell while it is performing the process of respiration? (1 Point)
The negative charge inside of the cell is used to increase the concentration chemicals inside of the cell
Sugar is broken down to generate adenosine triphosphate (ATP) molecules that are used for energy
Light reactive chemicals combine carbon dioxide (Co2) and water to form glucose molecules that are stored as
food[object Object]. Incorrect answer
The cell membrane forms around air bubbles to create a vacuole that is used to separate the oxygen from the
rest of the air
Adenosine triphosphate (ATP) molecules are produced from the breakdown of sugar and are used as an energy source.
What is respiration explain?The physical processes (such as breath and diffusion) via which a living creature acquires the oxygen it wants to make energy and get rid of waste gases include the act or activity of breathing (as carbon dioxide)
What is importance of respiration?The primary goal of breathing is to deliver oxygen to the cells at the a rate sufficient to meet their metabolic requirements. Through the skin's circulation, oxygen is transported from the lungs to the tissues through this process.
How many types of respiration are there?There are two varieties of breathing: The process of aerobic respiration occurs when there is oxygen present. Absence of oxygen results in anaerobic respiration.
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A therapist helps a client by focusing on her misguided thinking patterns. The therapist believes that by modifying how someone is processing information about the world, that this will help the person's overall mental health. For this therapist, there is an emphasis on thinking and processing.
With which of psychology's major perspectives does this therapist most closely align?
A. cognitive
B. psychoanalytic theory
C. behaviorist
D. humanistic
Would there be more ocean floor between the continents or less? Why?
Answer:
Yes there is
Explanation:
There is more ocean flooring than there is land, reason being is there is a lot more water than land. Take a look at pangea there is more water than there is land and its being stopped from reaching the core by the ocean floor and there is a lot of floor on the bottom of the ocean so yes there is more ocean floor between the continents. There is more because pangea broke off into pieces making more room for land
the reticular layer of the dermis is composed of dense irregular collagenous connective tissue and it houses such structures as the sebaceous glands and sweat glands. true or false?
True: the reticular layer of the dermis is composed of dense irregular collagenous connective tissue and it houses such structures as the sebaceous glands and sweat glands.
The dermis is made up primarily of the reticular layer, which is the deep layer and forms a thick layer of dense connective tissue. Blood veins, nerve endings, hair follicles, and glands are all located in the dermis. Therefore, the given statement is true. The sweat produced by the sweat glands helps to maintain thermoregulation.
The fibroblast-produced protein called collagen serves as the glue that keeps the dermis together. Skin cells called fibroblasts are responsible for the durability and tenacity of the skin. A strong, insoluble protein called collagen is present in the connective tissues that hold muscles and organs in place throughout the body.
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leslie has a severe sore throat and the lymph nodes in her neck are swollen. this would indicate that a) the focus of the infection is the lymph nodes. b) lymph is not flowing consistently through these lymph nodes. c) the lymph nodes contain an increased number of lymphocytes. d) the lymph nodes are actively producing phagocytes. e) the lymph nodes have increased their secretion of thymosin
leslie has a severe sore throat and the lymph nodes in her neck are swollen. this would indicate that c) the lymph nodes contain an increased number of lymphocytes.
What condition results in enlargement of the glands in the throat and neck?An upper respiratory infection is the most typical cause of enlarged lymph nodes, although there are other potential reasons as well. Consult your healthcare physician if they are enlarged without a clear explanation in order to rule out anything more dangerous.
Near an illness, lymph nodes or glands enlarge to aid in the body's defense against the infection. On occasion, a gland on one side of the body can enlarge. Other symptoms like a sore throat, a cough, or a high temperature might also be present.
The immune system of the body includes the lymph glands, often known as lymph nodes. In order to cleanse the body of infection, they gather and filter liquids.
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Why do heart cells have different characteristics than skin cells?
Responses
Heart cells have different DNA than skin cells.
Heart cells reproduce by cell differentiation.
Heart cells express different genes than skin cells.
Heart cells reproduce by mitosis
Answer:
c) Heart cells express different genes than skin cells.
Explanation:
Heart cells have different characteristics than skin cells because, the heart cells express different genes than skin cells. Hence, the option (c) is correct answer.
A student draws a cell with a diagmeter of 43 mm. The actual size of this cell is 10 μm. What is the magnification
The magnification of the student's diagram is 4300.
How to calculate magnification?Magnification is the apparent enlargement of an object in an image.
To calculate the linear magnification of a drawing or image, the following equation should be used:
Magnification = Image size (with ruler) ÷ Actual size (according to scale bar)
According to this question, a student draws a cell with a diameter of 43 mm. The actual size of this cell is 10 μm.
The image size in μm is 43000μm
The magnification of the drawing = 43000 ÷ 10 = 4300
Therefore, 4300 is the magnification of the cell drawing.
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Glucose sugar, a large molecule, can ONLY pass through the cell membrane with the help of a __________ via the process of _______________________.
Glucose sugar, a large molecule, can ONLY pass through the cell membrane with the help of a carrier protein via the process of facilitated diffusion.
Which membrane must glucose pass through?A large class of membrane proteins known as glucose transporters aid in the enhanced diffusion of glucose across the plasma membrane.
Therefore, Large molecules make it challenging for glucose to diffuse across a membrane. As a result, it moves down the concentration gradient through enhanced diffusion across membranes. The glucose is bound by the carrier protein at the membrane, which changes its structure to make it easier to transfer.
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why does meitosis is called reduction division
Mitosis is known as the reduction division because it results in cells that have half the number of chromosomes as the parent cell.
What is meiosis?Meiosis is an order of cell division in which the chromosome number in the cells reduces upshot in haploid cells. Meiosis is called reduction division because the integer of chromosomes in the daughter cells is half that of the parent cell. · Meiosis and its importance. Meiosis is sometimes called "reduction division" because it reduces the number of chromosomes to half the normal figure, Meiosis is referred to as reduction division because the number of chromosomes in the daughter cells has been lower. Meiosis is called reduction division because of the figure of chromosomes.
So we can conclude that Meiosis is a type of cell division in which the chromosome number in the cells reduces by half that resulted in the production of haploid number of chromosomes.
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Mutations that inhibit the function of photosystem i but not photosystem ii would result in a plant cell that could still______.
Light with longer wavelengths > 680 nm tends to be absorbed by photosystem I, while light with shorter wavelengths 680 nm likely to be absorbed by photosystem II.
What roles do plants' photosystems I and II play in the environment?
The pigments needed to gather photons and use light energy to catalyze the basic photosynthetic endergonic reactions that result in high energy molecules are found in the two multi-protein complexes known as photosystem I and photosystem II.
What happens if photosystem 1 is shut down?
Membrane disruptors, sometimes known as contact herbicides, are substances that stop Photosystem I from working. The rapid breakdown of cell membranes causes cell contents to spill into the intercellular gaps.
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After an initial infection, b-cells recognize the measles virus. How is this helpful in human immune response?.
Answer: Accelerates Immune Response in the event the antigen is present again.
Explanation:
B-cells function is to memorize the characteristics of the antigen that activated their parent B cell during initial infection such that if the memory B cell later encounters the same antigen, it triggers an accelerated and robust secondary immune response.
what features of dna make it possible to make recombinant dna in the lab? group of answer choices all of these choices are correct. two double helices from different sources can be ligated together.
All organisms have the same genetic code, restriction enzymes can cut DNA from all species, and two double helices can be ligated from different sources.
What parts of DNA make it up?DNA's building units are chemical compounds called nucleotides. These building blocks consist of three elements: one of four possible nitrogen bases, phosphate groups, and sugar groups. The phosphate and sugar groups are alternated when nucleotides are linked together to form chains, which is how DNA strands are built.
How does DNA serve a purpose?Information is stored in DNA. It contains data necessary to produce proteins, which are other big molecules. The 46 lengthy structures known as chromosomes that make up each of your cells house these instructions. Many thousands of smaller DNA pieces, known as genes, make up these chromosomes.
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select all that are categories of neurotransmitters based on chemical composition. multiple select question. acetylcholine sterols neuropeptides glycoproteins monoamines amino acids
Based on their chemical make-up, neuropeptides and monoamines are two categories of neurotransmitters.
What are the four classifications of neurotransmitters according to chemical make-up?According to their chemical and molecular characteristics, the four main types of neurotransmitters include peptides like somatostatin and opioids, amino acids like glutamate and glycine, monoamines like dopamine and norepinephrine, and purines like adenosine triphosphate (ATP).
Test your knowledge of neurotransmitters.Neurotransmitter definition. An impulse is transmitted from one nerve cell to another nerve, muscle, organ, or other tissue through the release of a substance from a nerve cell. Neurologic information is transported from one cell to another via neurotransmitters.
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the constriction of blood vessels in the scalp, which limits the oxygen supply to the brain is a .
An intracranial stenosis is a narrowing of the blood arteries in the scalp that reduces the oxygen supply to the brain.
What causes the scalp's blood arteries to constrict, limiting the amount of oxygen that can reach the brain?A narrowing of the arteries within the brain is known as intracranial stenosis. It is brought on by a buildup of plaque in the blood vessel's inner wall, just like carotid stenosis in the neck. The part of the brain that the damaged veins serve has less blood flow as a result of the blood vessels' constriction.
Which happens at the initial phase of stress?Your body's defenses begin to build during the alarm stage, when your central nervous system is awakened. A fight-or-flight reaction is produced at this SOS stage. During the resistance stage, your body starts to heal and restore normal heart rate, blood pressure, etc.
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the brain is a network of interconnecting neurons that control and integrate the body's activities. what components make up these neurons? select all that apply.
The brain is a network of interconnecting neurons that control and integrate the body's activities. components make up these neurons are Cell body, Axon, Dendrite
Nerve cells or neurons
Tang is no less important part of the anatomy of the nervous system is the nerve cell itself or called a neuron. The function of a nerve cell or neuron is to transmit nerve impulses.
Based on their function, neurons are divided into three types, namely sensory neurons that carry messages to the central nervous system, motor neurons that carry messages from the central nervous system, and interneurons that transmit messages between sensory and motor neurons in the central nervous system.
Each neuron or nerve cell consists of three parts or basic structures. The anatomy of these neurons, namely:
- The cell body, which has a nucleus.
- Dendrites, which are shaped like branches and function to receive stimuli and carry impulses to the cell body.
- The axon is the part of the nerve cell that carries impulses away from the cell body. Axons are generally surrounded by myelin, which is a dense, fatty layer that protects nerves and helps messages pass. In peripheral nerves, this myelin is produced by Schwann cells.
These nerve cells can be found throughout the body and communicate with each other to produce physical responses and actions. According to the National Institutes of Health, there are an estimated 100 billion neurons in the brain. These nerve cells include 12 pairs of cranial nerves, 31 pairs of spinal nerves, and elsewhere.
Nervous system function
In general, the nervous system in humans has several functions. The functions are:
- Collects information from inside and outside the body (sensory function).
- Sends information to the brain and spinal cord.
- Processing information in the brain and spinal cord (integration function).
- Sends information to muscles, glands, and organs so they can respond appropriately (motor function).
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a sample of john's blood shows a high level of pyrogens. this would indicate that john a) is feeling achy. b) is producing t lymphocytes. c) has a sore throat. d) is running a fever. e) has swollen lymph nodes.
The answer is d) running a fever, as indicated by high level of pyrogens in blood.
Pyrogens are things that can cause fever. Endotoxins, which are lipopolysaccharides (LPS) made by Gram-negative bacteria like E. coli, are the most frequent pyrogens. These substances go through the blood to the brain, where they interfere with the hypothalamus' ability to control body temperature. The hypothalamus is tricked into believing that the body is cooler than it actually is because the pyrogens suppress heat-sensing neurons and excite cold-sensing ones. A fever results from the hypothalamus's response, which causes the body's temperature to rise above normal
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Blood is called tissue give reason
Blood is both a tissue and a fluid. It is a tissue because it is a collection of similarly specialized cells that serve particular functions. These cells are suspended in a liquid matrix (plasma), which makes the blood a fluid.
Explanation:Blood is considered a type of connective tissue because it connects the body systems, transports oxygen and nutrients to all the parts of the body, and removes waste products. Blood has an extra-cellular matrix called plasma, with red blood cells, white blood cells, and platelets floating in it. Blood is a specialized form of fluid connective tissue. Blood is regarded as a connective tissue because as the blood is circulated throughout the body due to the pumping action of the heart, it carries different materials and gases from one part of the body to another. Hence, it connects different tissues and organs of the body and thus, is called connective tissue. It is considered a connective tissue because it consists of blood cells surrounded by a nonliving fluid matrix called blood plasma. It is the most atypical connective tissue: the fibres of blood are soluble protein molecules that become visible during blood clotting.
not all individuals are identical in what? A. ecosystem, B. community, C. Organism, D. Populations
According to the research, the correct answer is option B. In a community not all individuals are identical.
What is a community?It is a group of populations of different individuals, who live in the same place or biotope in which they find the environmental circumstances to guarantee their survival.
In this sense, these organisms of different species coexist and interrelate in a geographical region, forming a trophic chain and competing for the prolongation of their species.
Therefore, we can conclude that according to the research, a community is established by the set of different individuals that live in the same habitat, thus the correct answer is option B.
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