Scyphozoans True jellies, members of the phylum Cnidaria, are frequently observed in Florida and hang upside down in the water with their tentacles pointing upward. They do this to illuminate the photosynthetic dinoflagellates that are stored within their bodies.
The majority of Scyphozoa species have two distinct life cycles: the planktonic medusa or jellyfish form, which is most noticeable during the warm summer months, and a less noticeable but more persistent bottom-dwelling polyp that periodically produces new medusae. Scyphozoa make up the majority of the enormous, frequently colorful, and noticeable jellyfish that may be seen in coastal areas all over the world.
Scyphozoans lack any lasting hard elements, such as a head, a skeleton, or specialized respiratory or excretory organs. Since marine jellyfish are up to 98 percent water, they are rarely discovered in fossil form.
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Root Tissues
Identify the root tissues. Record your answer under "Slide 5" on your lab report.
Answer:
The tissue must be C as b is the cortex and a is both xylem and phloem.
Hope this helped! :)
The tissue is C because B is the cortex and A is xylem and phloem.
PLease tell me if I am wrong!
Because we view the world through a subjective lens influenced by a number of variables, perception is considered:________
Because we view the world through a subjective lens influenced by a number of variables, perception is considered inaccurate.
What is perception?Perception is an outcome of a given stimuli, which is subjective because it depends on how an organism senses its surrounding environment.
Perception is also subjective because environmental inputs can influence the brain and senses in distinct modes according to how an individual relates to his/her physical world.
This phenomenon (perception) is also inaccurate because responses are different in distinct organisms for the same environmental input.
In conclusion, because we view the world through a subjective lens influenced by a number of variables, perception is considered inaccurate.
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PLSSS HELP I WILL MARK BRAINLIEST I TRULY NEED HELP IM GONNA FAIL
You are an anthropologist analyzing bone remains from the grave of an ancient female human. Within one of the bones, you find an unusually high concentration of collagen. What does this suggest about the ancient female? (2 points)
She broke a bone and then died before it was fully healed.
She broke a bone and then died a few hours later.
She broke a bone at a very young age, but it fully healed.
She broke a bone at a very young age, but it did not fully heal.
Answer: C
Explanation:
Newly formed B cells which bind to autoantigens (self-antigens) will undergo apoptosis. This process is known as:
I Don't No if you have any questions
After the cerebellum receives proprioceptive information from muscles carrying out a voluntary movement, where does it send corrective feedback?
After the cerebellum receives proprioceptive information from muscles carrying out a voluntary movement, where does it send corrective feedback to primary motor cortex and cerebral nuclei.
The cerebellum, also known as the corticocerebellum, has a close connection to the regulation of movement timing, rate, range, length, direction, and strength. The cerebellum receives information from the command neurons and also obtains feedback (afferent) from the proprioceptive terminals of the muscles, tendons and joints regarding what the actual movements produce .
All these information are combined and the correction signals are given to the motor cortex. The motor nuclei of the cranial nerves and spinal cord exert the lowest level of motor control. Through the closed feedback loop, this occurs.
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In the United States today, life expectancy is: Group of answer choices the number of years that reflect competence in dealing with challenges. longer for men than for women. believed to be influenced by having an extra X chromosome 78.5 years overall
Believed to be influenced by having an extra X chromosome 78.5 years overall.
What is the life expectancy in the US 2020?Life expectancy at birth for the entire U.S. population was 77.8 years in the first half of 2020, down from 78.8 in 2019. (6). Male life expectancy at birth fell by 1.2 years from 76.3 years in 2019 to 75.1 years in the first half of 2020. Life expectancy in the United States decreased during 2020 as a result of the pandemic.
According to the researchers, the drop in U.S. life expectancy between 2019 and 2021 is the largest since 1943, which was the bloodiest year for Americans during World War II. The decrease in U.S. life expectancy was highly racialized, with Hispanic and Black populations experiencing the largest losses in life expectancy between 2019 and 2021.
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A farm field that has used only inorganic fertilizer for the past 20 years is most likely to have A farm field that has used only inorganic fertilizer for the past 20 years is most likely to have:____.
a. more soil organisms, more soil structure, and increased nutrient holding capacity. b. more soil organisms, less soil structure, and decreased nutrient holding capacity. c. fewer soil organisms, less soil structure, and decreased nutrient holding capacity. d. fewer soil organisms and less soil structure but increased nutrient holding capacity.
Answer:
Fewer soil organisms, less soil structure, and decreased nutrient holding capacity.
After a short, high-level exposure to a toxicant, you immediately feel dizzy and nauseous. you are likely showing symptoms of:______
Blood pressure drops excessive they sit or stand up which condition called or postural hypo-tension.Orthostatic hypotension which is also called postural hypotenmnsion.
Orthoostatic hypotension caan caused dizziness or lightheadedness hypotension which is a form of low blood pressure that can happens when standing after sitting or lying down.But in some cases people with high blood pressure may have a pounding feeling in their head or cheat a feeling of lightheartedness.
Dizziness and nausea people feeling lightheaded enough to faint or notice cold, clammy skin, blurry vision, or chest pain.Dizziness or light headedness when standing occurs in about 20% of old people.
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If a cat normally has 38 chromosomes in its somatic (body) cells, how many chromosomes will be in its gametes? a. 76 b. none of these c. 19 d. 38
Each gamete has half the number of chromosomes of the somatic cell. Hence, cats' gametes will have 19 chromosomes. Option C.
What are the type of cells in the organism?The types of cells in the organism are somatic and germ cells.
Both the somatic and germ cells go through mitosis producing two daughter cells with the same genetic dotation.
Somatic cells are any cell in the body except sperm and egg cells. They are diploid, meaning they contain two chromosome sets, each one inherited from each parent.
Germ cells are diploid reproductive cells. They suffer mitosis to form more sexual cells, and a few suffer meiosis to produce haploid gametes. Each germ cell produces 4 haploid gametes.
Each gamete has half the number of chromosomes of the somatic cell. Hence, cats' gametes will have 19 chromosomes. Option C.
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Answer: 19
Explanation: half of 38
Pharmacological induction of heme oxygenase-1 by a triterpenoid protects neurons against ischemic injury
The given statement that pharmacological induction of heme oxygenase-1 by a triterpenoid protects neurons against ischemic injury holds True.
What is Heme- Oxygenase-1?Heme- Oxygenase-1 is an enzyme that usually gets triggered when there is oxidative stress to the body.
This enzyme helps protect the body from repeated unwanted injuries.
Oxidative stress means the formation of the free radicals in the body that produce harmful effects to the human body.
Thus neutralizing these radicals is very important.
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What are mutations?
For biology revision
Answer: cells are incredibly accurate when they are copying DNA, but there are going to be some errors.
Most of these errors can often times break the organism in some way or might not at all.
But every now and then, some of these errors either as an individual base pair or maybe cumulatively can produce a different phenotype and potentially a phenotype that has an advantage.
This is mutation.
A mutation is a change to an organism's DNA sequence. Errors in DNA replication during cell division, exposure to mutagens, or viral infection can all cause mutations.
what are the different types of mutation?There are three types of DNA Mutations:
base substitutionsdeletions insertions.Base substitutions : Point mutations are single nucleotide substitutions; consider the point mutation Glu ——-> Val is the culprit of sickle cell anaemia.
Deletions : A deletion happens when one or more base pairs are deleted from the DNA, which causes a frameshift.
Insertions: Depending on whether multiples of three base pairs are entered, the addition of additional base pairs may cause frameshifts.
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A procedure that increases the appetitiveness or aversiveness of a stimulus is called a(n):_______
A procedure that increases the appetitiveness or aversiveness of a stimulus is called Establishing operation.
Any stimulus that will increase the chance that a preceding behavior will arise again. Satisfies a biological need and works clearly, no matter someone's previous enjoy.
Stimulus that will become reinforcing because of its affiliation with a number one reinforcer. Aversives are unpleasant stimuli that result in adjustments in behavior via negative reinforcement or effective punishment. by using applying an aversive right now earlier than or after a behavior the likelihood of the target conduct going on in the destiny is reduced.
Stimulus is some thing that makes an organism or part of an organism react in some way. for example, for maximum vegetation, daylight acts as a stimulus that reasons stimulates them to grow or pass toward it.
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A procedure that increases the appetitiveness or aversiveness of a stimulus is called Abolishing Operation.
Abolishing Operation is to describe events that decrease the punishing effectiveness of a consequence and change the frequency of the future related to that particular consequence.
It is a type of motivating operation that is responsible in making stimulus more desirable. Many unconditioned abolishing operations are identified in humans.
Example: Satiation of sleep, activity, food, Cold and warmth.
Aversiveness tends to avoid or punish stimulus.
Appetitive stimulus is an unconditioned stimulus that can be modified by deprivation.
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Which season will the northern hemisphere experience when the axis of earth is tilted towards the sun
The summer season will be experienced by northern hemisphere when the axis of earth is tilted towards the sun.
What is Summer?This season is usually the hottest and it experiences more daylight hours than dark hours.
The hot atmospheric condition is as a result of the earth facing the sun thereby increasing its exposure to heat from it.
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Most water is lost daily via the:_______
a. colon.
b. kidneys.
c. lungs.
d. skin.
Answer:
B. Kidneys
How does drinking water affect the kidneys?
Most individuals are aware that our bodies need water to function. Our bodies are actually made up of about 70% water. Water facilitates all bodily processes, whether it be the brain, which directs all bodily movements, the blood, which carries oxygen and nutrients, or even the muscles, which maintain our bones sound and erect. Water is the element that is most essential to human survival, as even our predecessors understood.
Even though they include largely water, other drinks including fruit juice, tea, coffee, and carbonated drinks shouldn't be confused with water. For proper hydration, doctors advise us to consume 13 glasses of water each day. Abdominal discomfort, motion sickness, constipation, diarrhea, and a number of other health problems can result from not drinking enough water. In order to maintain proper body processes, water is essential.
Reasons for drinking water
For your kidneys to effectively remove toxins from your body, you need to drink enough water. Water is necessary for the liver and kidneys to remove poisonous waste from the body. Urine is the bodily waste substance that is expelled from the body.Water facilitates regular bowel motions inside the intestines. Drink enough water to avoid constipation, indigestion, and other digestive issues.Increased water consumption might assist you avoid consuming extra calories. It keeps your hunger in check, makes you feel full, and encourages you to eat just little amounts of food, which helps to maintain a healthy physique. Many diet plans recommend increasing your water intake as a deliberate weight reduction strategy. A body that is properly hydrated can metabolize fats and carbs quickly.Drinking enough water helps to maintain the delicate balance of body fluids. The body's ability to absorb and assimilate nutrients depends heavily on water. Blood is made mostly of water in about 82 percent of cases. Drinking enough water each day contributes to keeping your blood viscosity at the right level.Water makes the skin look fresh and smooth. A hydrated body usually has soft and healthy skin. Dehydration leads to anxiety and nervous tension. It can also impair concentration and lead to mood swings, thus lowering the brain functions. Keeping yourself hydrated boosts memory, keeps you active, increases concentration and improves mood.Water regulates your body temperature by maintaining the fluid levels in the body. It flushes out excess heat from the body in the form of sweat. This helps to maintain proper body temperature.A new animal is discovered that is more sensitive to pain in its toes than its fingers. If we were to examine the brain of this animal we would notice that ________.
A new animal is discovered that is more sensitive to pain in its toes than its fingers. If we were to examine the brain of this animal we would notice that the parietal lobe would have more brain area devoted to the toes than the fingers.
What is the parietal lobe's primary purpose?The parietal lobe is one of the major lobes in the brain, roughly located at the upper back area of the skull.It is found on both the left and right hemispheres of the cerebral cortex.
Somatosensory information from the body, such as touch, pain, temperature, and the perception of limb position, is processed by the parietal lobes. The parietal lobes play a role in integrating data from several modalities, just like the temporal lobes do. Parietal lobe houses the primary somatic sensory cortex, a part of the brain that processes information from various parts of the body.
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Two matching chromosomes having the same basic structure and same sequence of genes are called a ______ pair.
Two matching chromosomes having the same basic structure and same sequences of genes are called a Homologous chromosomes ,which is made by same pairs , centro-mere position, and staining pattern, for gene with same corresponding loci.
The same gene present at the same genes at the same loci positions .A homologous chromosomes are the set of one maternal and one paternal chromosome that pair up with each other during cell fertilization.
Its pair are similar to one another and have the same size and shape.Also they carry the same type of genetic information's. If four pair of chromosomes are present called a tetra or bivalent chromosomes.
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The end products of digestion of carbohydrates are ________
Answer:
glucose, fructose and/or galactose
If everyone on the planet used the same amount of resources as an average American, what percent of the Earth would need to be used to support everyone
A usable dilution of disinfectant is one that prevents growth of bacteria when compared with the positive control tube. reduces the growth of bacteria when compared to the positive control tube. increases the growth of bacteria when compared to the positive control tube.
When compared to the positive control, a disinfectant dilution is considered to be useful if it stops bacterial growth.
Choosing a disinfectant:
When selecting a disinfectant, keep the following things in mind:
The range of bacteria that need to be eliminated. Look into the specifications of the manufacturers.The conditions of usage of disinfectant.Application of disinfectants :
Activity: it is necessary for efficient disinfection since, once diluted, it degrades over time. Different disinfectants deteriorate at different rates. Obtain data from the manufacturers. Disinfectants that don't have a color indication, like Virkon, should be marked with an expiration date.Touch time: it has to be verified that the manufacturer's data to make sure the organism stays in contact for the specified amount of time. Considering that solid materials like cells and tissue granules are difficult for disinfectants to penetrate, autoclaving would be a more effective way to inactivate.Therefore the correct choice is an option (A).
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Find the surface area
the surface area of a figure in square units is the number of unit square it takes to cover entire surface without the gas or overlapse if three dimensional figure has + sides the sides called faces the surface area is the total of the area of the faces
What is the process that ensures mitral and tricuspid valve closure after the ventricles are filled with blood?
Diastole is the process that ensures mitral and tricuspid valve closure after the ventricles are filled with blood.
Cardiac cycle events can be divided into diastole and systole. Diastole represents ventricular filling, and systole represents ventricular contraction/ejection. Systole and diastole occur in both the right and left heart, though with very different pressures.
Diastole begins with the closing of the aortic valve (or pulmonic) and ends with the closing of the mitral valve (or tricuspid). This period encompasses the ventricular relaxation and filling.
Diastole represents when the blood vessels return blood to the heart in preparation for the next ventricular contraction.
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In the months preceding birth, the hormone which causes pelvic ligaments to become more flexible to enable widening of the pelvis during delivery is ________.
In the months preceding birth, the hormone which causes pelvic ligaments to become more flexible to enable widening of the pelvis during delivery is relaxin.
What is relaxin hormone?The ovary and placenta both generate the hormone relaxin, which has significant effects on the female reproductive system and on pregnancy. It loosens the ligaments in the pelvis and softens and opens the cervix in order to prepare for childbirth.Progesterone starts to come out of the corpus luteum, and it combines with relaxin to thicken the uterine lining, aiding in the implantation of the fertilized egg.In both pregnant and nonpregnant females, the corpus luteum is principally responsible for producing relaxin. During pregnancy, its plasma levels are at their peak. The decidua and placenta both manufacture relaxin during this state. Relaxin is produced in the prostate and released into the seminal fluid in males.Learn more about hormone here:
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question 4: an atom with 7 protons, 6 neutrons, and 7 electrons, has an atomic mass of blank amu. (Enter a whole number)
A chronic disease characterized by the continued use of a drug regardless of its harmful consequences is ___________________________.
A chronic disease characterized by the continued use of a drug regardless of its harmful consequences is addiction.
Addiction is a chronic illness marked by compulsive, or uncontrollable, drug or alcohol seeking and use despite negative effects and potentially long-lasting alterations in the brain. The negative behaviours exhibited by drug or alcohol users may result from these changes in the brain. Addiction is a relapsing illness as well. Relapse is the act of using again after making an effort to stop. The brain regions responsible for motivation, learning, and behaviour regulation are all impacted by addiction.
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?
Hemophilia is a sex–linked disorder that is caused by a defective gene on the X chromosome. What will be the pattern of inheritance of the offspring of a hemophiliac father?
The pattern of inheritance of the offspring of a hemophiliac father would be heterozygous.
What is Hemophilia?Hemophilia is defined as the sex–linked disorder that occurs due to an abnormality of the X chromosome.
A father that has hemophilia would be affected only on his X chromosome and can only pass it to their children making them carries.
This is because the children would inherit only one X chromosome from their father and a healthy X chromosome from their mother.
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As they pass through small blood vessels, erythrocytes may pack together, single-file, like a roll of coins; this formation is called ______.
a rouleau (rouleaux)
What is a rouleau?
Red blood cells (RBCs) can stack up or aggregate into rouleaux (singular: rouleau), which are formed by the distinct discoid shape of vertebrate cells. The discoid RBCs' flat surface offers them a lot of surface area to cling to and make contact with, creating a rouleau. Because of them, the ESR (erythrocyte sedimentation rate) increases when the plasma protein concentration is high. This serves as an all-purpose indicator of sickness.
Infections, multiple myeloma, Waldenström's macroglobulinemia, inflammatory and connective tissue disorders, and malignancies are among the illnesses that can result in rouleaux production. As one of the causes of microvascular occlusion in diabetic retinopathy, it also occurs in diabetes mellitus.
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4. Which of the following poses a major problem in understanding and fixing the issues with the San Joaquin Valley?
a. lack of scientific tools and data
b. lack of community support
c. lack of time from officials
A major problem to understand and correct the problems with the San Joaquin Valley lack of tools and scientific data on valley fever.
A. lack of scientific tools and dataWhat is valley fever?The small town of Avenal, in the San Joaquin Valley, is most affected by an incurable disease known as 'valley fever'. Cases of an incurable disease called "valley fever", are multiplying at an alarming and surprising rate in the southwestern United States.
With this information, we can conclude that San Joaquin Valley, is best known for an incurable disease known as 'valley fever', where there is no scientific data that can explain.
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What is sexual and asexual reproduction
Answer: asexual reproduction is when an organism can reproduce without the need of another unlike sexual reproduction
Explanation: sexual reproduction happens when two organisms reproduce together giving the offspring 50% of each organisms DNA--
asexual reproductions is more like the organism replicating itself because the offspring has 100% of its DNA making it the exact same
In sexual reproduction an organism that reproduces sexually incorporates the genetic material from both of its parents and is genetically distinct. Asexual reproduction creates genetically identical kids by having one parent replicate itself.
what is reproduction?The biological process of reproduction is how new individual organisms, or children, are created from their parents.
Reproduction Methods:
Animals can reproduce in two different ways;
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What enzyme adds complementary bases to exposed single strands of dna during dna replication?
The name of the enzyme is a polymerase. In the DNA replication process, polymerase plays an important role.
The enzyme polymerase is important for the process of DNA replication. Many other enzymes are involved in this process to complete this process.
The enzyme DNA ligase helps in joining the strands. This enzyme simply performs joining and sealing functions.
The enzyme DNA polymerase produces new strands from the parent strands i.e. from the old one.
The new strand is synthesized by joining old and new strands by enzyme DNA polymerase
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What property of carbon makes it able to form large macromolecules?
O Carbon can form five or more bonds with other carbon atoms in chains and rings.
O Carbon can form single, double, and triple bonds with other carbon atoms.
O Carbon can form three triple bonds, two double bonds, or one single bond with other carbon atoms.
O Carbon can form hydrogen bonds between molecules to make larger molecules.
B: Carbon can form single, double, and triple bonds with other carbon atoms.