A stem cell is
A. A specialized cell that can divide limitlessly but cant differentiate
B. A specialized cell that can divide limitlessly.
C. An unspecialized cell that cant divide limitlessly nor differentiate into specialized cell.

Answers

Answer 1

Answer:

B

Explanation:

They divide to form more cells called daughter cells under proper conditions

Answer 2
B

It is B because the stem cells divide and divide so its lile a pattern where it goes more and more cells

Hope this helps :))

Related Questions

The second generation of purebred cross of -hom-ozygo us recessive organism, with a —hom-ozygous dominant organism, contain a ratio of approximately _______ expressed dominant traits to recessive traits.
A. 2:1
B. 1:1
C. 1:3
D. 3:1

Answers

Answer:

D. 3:1

Explanation:

Gregor Mendel, in one of his numerous studies, performed a cross between purebred dominant (TT) pea plants and purebred recessive (tt) pea plants. All the offsprings of this cross appeared heterozygous tall (Tt) in the F1 generation.

However, when he self-crossed the F1 generation i.e. Tt × Tt, Mendel obtained a phenotypic ratio of 3 tall plants (dominant traits) : 1 short plant (recessive). This showed that the masked gene (recessive) was still present.

A ______, such as a bean, has two seed leaves.

Answers

Answer:

A dicotyledonous plant

hope this helps you

Which is our body part help us to maintain balance.

Answers

Answer:

cerebellum

Explanation:

The cerebellum is a small part of the brain positioned at the back of the head, where it meets the spine, which acts as the body's movement and balance control centre.

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Tai không chỉ có vai trò để lắng nghe mà còn hỗ trợ trong việc giữ cân bằng

When thinking about all 4 types of macromolecules discussed, which of the following statements are true? Select all that apply.


Monomers are linked together by hydrolysis.


Monomers are joined together to form functional polymers


Monomers are linked together by dehydration synthesis.


Monomers join together via hydrogen bonds.

Answers

2 and 3

1 is describing the process to separate monomers
2 multiple monomers create polymers
3 removal of water to join monomers
4 they are joined by covalent bonds

Macronutrients is the most readily available for energy production

Answers

Answer:

The correct answer is - true.

Explanation:

All the macronutrients carbohydrates, fats, and protein all three produce energy. Carbohydrates are the most preferred source of energy for the human body as it is the macronutrient that your system most requires.

The human body easily breaks down most carbohydrates and provides a significant amount of energy. The energy-providing process is called cellular respiration starts with glucose as a substrate. Glucose is the simplest carbohydrate.

What is the answer with explaining

Answers

Answer:

EeWw

Explanation:

This question involves two genes; one coding for earlobes and the other for hairline. According to the question, one parent is homzygous recessive for earlobe but homzygous dominant for hairline i.e. (eeWW) while the other parent is homzygous dominant for unattached earlobes but homzygous recessive for hairline i.e. (EEww).

The cross between the two parents is as follows: eeWW × EEww. The following gamete combination will be produced by each parent:

eeWW - eW, eW, eW, eW

EEww - Ew, Ew, Ew, Ew

Using these gametes in a punnet square, the following proportions of offsprings will likely be produced:

All EeWw offsprings

6. Compare the different measurements of the thermometer which are used.​

Answers

Having a reliable medical thermometer at home can be incredibly helpful. The ability to accurately find out if someone has a fever gives you much-needed information about important next steps for their care.

There are many types of contact and contact-free thermometers to choose from. The ages of your household members, as well as personal preference, can help you determine which types to buy.

Like any other device in your home, it’s important to understand how your thermometer works. Not every type works the same way or is designed to provide the same temperature readings.

For each of the following structures, first indicate its function in the fetus; then, note its fate (what happens to it or what it is converted to after birth).

a. Umbilical artery
b. Umbilical vein
c. Ductus venosus
d. Ductus arterious
e. Foramen ovale

Answers

Answer:

1. Functions:

a. Umbilical artery >> carries deoxygenated blood from the fetus to the placenta

b. Umbilical vein >> transports oxygenated blood from the placenta to the fetus

c. Ductus venosus >> allows oxygenated blood from the placenta to bypass the liver

d. Ductus arterious >> allows most of the blood from the right ventricle to bypass the fetus's non-functioning lungs

e. Foramen ovale >> oxygenated blood from the umbilical vein to bypass the pulmonary circulation

2. After the bird:

1. Umbilical artery >> medial umbilical ligament

2. Umbilical vein >> round ligament of the liver

3. Ductus venosus  >> ligamentum venosum

4. Ductus arteriosus >> ligamentum arteriosum

5. Foramen ovale >> fossa ovalis

Explanation:

The umbilical artery is a paired artery localized in the abdominal and pelvic regions, which carries deoxygenated blood from the fetus to the placenta through the umbilical cord. The medial umbilical ligament is the obliterated part of the umbilical artery that arises from the internal iliac arteries. In utero, the umbilical arteries carry waste products back to the placenta, whereas the umbilical vein carries oxygenated blood from the placenta to the fetus. The round ligament of the liver (also known as ligamentum teres hepatis) is a remnant of the umbilical vein that  exists in the embryonic stage, it connects the left lobe of the liver to the umbilicus. The ductus venosus is a slender shunt that allows oxygenated blood from the placenta to bypass the liver, it connects the intra-hepatic portion of the umbilical vein to the inferior vena cava. The ligamentum venosum is an extrahepatic, slender, and fibrous remnant of the fetal ductus venosus that travels between the left portal vein and the inferior vena cava. The ductus arteriosus is a fetal artery that connects the aorta to the pulmonary artery. The ligamentum arteriosum is a nonfunctional vestige of the ductus arteriosus, it is attached to the superior surface of the pulmonary trunk. The foramen ovale is an oval-shaped, small, opening in the wall (septum) between the two upper chambers of the heart. The fossa ovalis is a vestige stricture of the foramen ovale of the embryonic heart, which forms a depression in the right atrium of the heart.

Bert has blonde hair (b). Molly has brown hair (B), but her genotype is Bb, meaning she carries a recessive blonde allele. What is the likelihood of Bert and Molly's second child having brown hair?

Answers

Answer:

50%

Explanation:

Iif you do a punnet square you get Bb, Bb, bb, and bb

since blond is represneted by the recessive bb it's a 50% the child will have blond hair

Why can viruses not fit in any domain? How are they different from all other forms of Life? What would need to occur for viruses to be classified as "alive"?

Answers

Answer:

virus are obligate parasites. Viruses do not, however, carry out metabolic processes. Most notably, viruses differ from living organisms in that they cannot generate ATP.

What is a major role that fungi play in ecosystems

Answers

Answer:

Fungi play a crucial role in the balance of ecosystems. They colonize most habitats on earth, preferring dark, moist conditions. They can thrive in seemingly-hostile environments, such as the tundra. However, most members of the Kingdom Fungi grow on the forest floor where the dark and damp environment is rich in decaying debris from plants and animals. In these environments, fungi play a major role as decomposers and recyclers, making it possible for members of the other kingdoms to be supplied with nutrients and to live.

Explanation:

Answer from Gauth math

Porque crees que las personas llegan a consumir sustancias psicoactivas

Answers

Answer:

La causa exacta del consumo de drogas se desconoce. Los genes de una persona, la acción de las drogas, la presión de compañeros, el sufrimiento emocional, la ansiedad, la depresión y el estrés ambiental pueden ser todos factores intervinientes.

Explanation:

Which statement is not true about the field of science?
it is based on observations and explanations of the natural world.

Answers

You are right with your answer please

Actual Question:
Which statement about the purpose of the field of science is false? (1 point)

Science is used to investigate the natural world.

Events of the natural world can be explained by science.

Science works to establish a collection of unchanging truths.

Useful predictions come from derived explanations of science.
Answer:

Science works to establish a collection of unchanging truths.

Explanation:

I took the test

Please help;
Given the range of current speeds shown on the graph above, would deposition ever be possible for clay (0.001 mm) or silt (0.01mm) particles?
Answer yes or no and explain your answer.

Answers

Answer:

Yes.

Explanation:

Yes, deposition can be possible for clay (0.001 mm) and silt (0.01mm) particles when the agent that carry its load is absent in that region such as wind. Wind is the agent that moves clay and silt particles with it so if there is high wind in a specific region, no deposition will occur while on the other hand, those areas where wind is not present, deposition will definitely occurs so we can say that deposition depends on the presence and absence of wind.

what gender of offspring are most often affected by sextinked inheritance?-What gender-are-usmally-carriers-of the trait?

-males, males
-males, females
-females, females
-females, males O O

Answers

Answer:

female, female

Explanation:

this is because sex-linked characters are normally borne in the X-chromosome

This is the last

What are the vestigal organs present in human body??​

Answers

Answer:

Charles Darwin listed a number of putative human vestigial features, which he termed rudimentary, in The Descent of Man (1871). These included the muscles of the ear; wisdom teeth; the appendix; the tail bone; body hair; and the semilunar fold in the corner of the eye.

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if you look away from this sentence and focus your eyes on a distant object, the eye muscles _______ to focus images on the retinas

Answers

If you look away from this sentence and focus your eyes on a distant object, the eye muscles relax to focus images on the retinas.

Which answer option below describes the best way to increase the accuracy of a
confidence interval calculation?

Answers

The answer is c but this has to be twenty characters long

The accuracy of a confidence interval calculation can be increased from  95% to 99%.

Thus, option C is correct.

What is confidence interval?

A confidence interval contain a population parameter in a specified proportion of the time, which can be computed using the given confidence level from a limitless level of individual sample.

The proportion of the range consists of the true value of the factor that will be identical to the confidence level.

In most of the confidence interval examples, the confidence level chosen is 95%. and it can be raise up to 99%.

It cannot estimate the plausible values of the unknown parameter of the population.

Two types of confidence interval observed such as accuracy which is defined based on whether the confidence interval contains the true population parameter or not.

Secondly, the precision defined in terms of the width of a confidence interval.

Hence, option C is correct.

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Los microondas tienen una frecuencia mayor a las ondas de radio. verdadero o falso,justifique

Answers

Los microondas tienen una frecuencia mayor a las ondas de radio.Verdadero o Falso.

Verdadero.

→ Porque, los microondas con/y las radiofrecuencias son radiaciones electromagnéticas de mayor frecuencia.

SALUDOS!

MiraculousAlejandra

In butterflies, having red antennas (denoted by “R”) is dominant to having white antennas (denoted by “r”). If both parents are heterozygous for red antennas, what are the predicted Phenotypic outcomes of their offspring? (hint: a punnett square will help you determine this).

In butterflies, having red antennas (denoted by “R”) is dominant to having white antennas (denoted by “r”). If both parents are heterozygous for red antennas, what are the predicted Genotypic outcomes of their offspring? (hint: a punnett square will help you determine this).

All the offspring of a cross between a black-eyed mendelien and an orange-eyed mendelien have black eyes. What is the expected F2 phenotypic ratio of a cross between two F1 black-eyed mendeliens?
A) 1 black-eyed:1 orange-eyed
B) 3 black-eyed:1 orange-eyed
C) 1 black-eyed:3 orange-eyed
D) 1 black-eyed:0 orange-eyed

Answers

The phenotypic ratio of the cross is as follows: 3 red antennas: 1 white antenna

For question 2, the phenotypic ratio of the F2 generation is: 3 black-eyed: 1 orange-eyed

QUESTION 1

According to the first question, a gene coding for antenna color in butterflies is involved. Red antennas (“R”) is dominant to white antennas (“r”). Hence, a butterfly with genotype "Rr" will be phenotypically red.

According to this question, If both parents are heterozygous for red antennas i.e. Rr (red antenna) × Rr (red antenna), the following gametes will be produced: R and r. Using these gametes in a punnet square (see attached image), the following phenotypic ratio of offspring is produced:

3 RED ANTENNAS (RR, Rr, Rr) : 1 WHITE ANTENNA (rr)

2. In the second question, all the offspring of a cross between a black-eyed mendelien (BB) and an orange-eyed mendelien (bb) have black eyes (Bb). In a cross between two F1 black-eyed mendeliens i.e. Bb × Bb, the following proportion of offspring is produced:

BB, Bb, Bb, bb

Hence, a phenotypic ratio of 3 black-eyed: 1 orange-eyed

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Devise an experiment to test the effect of pH on the activity of biological washing powder

Answers

Answer:

boil a water on a container deep your face inside it and you know the temperature ️ of water

PLS HELP ASAP
ILL GIVE BRAINLY

Contrast the usefulness of absolute and relative dating techniques.

Answers

Answer:

In relative dating, fossils are dated according to the depth at which they were buried While in the absolute dating, isotopes of carbon are used for dating fossils. The absolute dating is more precise than relative dating because it tells the exact age of the fossils.

Scenario 1:

Genetic engineering can be used to create more productive strains of farm animals used for milk and meat production. By adding genes to an animal’s DNA, the animal can be made to be more resistant to common infections. This can reduce the need to administer large doses of antibiotics to the animals.

Do you think that this type of genetic engineering should be pursued? Explain your answer. (5 points)

What are some possible impacts (positive and negative) of this type of genetic engineering on individuals, society, and the environment? (5 points)


Scenario 2:

Mike was adopted, and his biological family history is unknown. Although he is healthy, he would like some understanding of his genetic makeup, including potential health risks and genes that he could pass on to his children. Mike has heard about commercial laboratories that can compare segments of your DNA to those of people with common hereditary diseases in order to give you some idea of how susceptible you are to the diseases. The results of these types of tests are highly inconclusive. If Mike’s DNA showed that he shares similarities in a segment of DNA with people who have a given disease, his chances of developing that disease or passing it on to his children may be slightly elevated, but they are not 100 percent. These tests can cost more than $2,500 and are not covered by many insurance companies.

Do you think that Mike should undergo the genetic tests? Explain your answer. (2 points)

What are potential pros and cons of having such tests done? (5 points)

Describe how the availability of these genetic tests might affect the frequency of genetic diseases in individuals and populations. (3 points)

Answers

Due to brainly not accepting my essay, I have instead included a image of it. :D

The large number of alveoli in lungs improve gas exchange by ________. increasing the surface area for diffusion decreasing the distance for diffusion changing the diffusion constant increasing the concentration difference

Answers

Answer:

Explanation:

The large number of alveoli in lungs improve gas exchange by . increasing the surface area for diffusion

1. Sensation is to as perception is to a. vision, olfaction b. conscious, unconscious c. awareness, interpretation d. taste, vision.​

Answers

Answer:

opt (c)

Explanation:

Determine the correct energy transformations during the generation of electricity from fossil fuels.
A. Heat to Chemical to Electrical to Kinetic
B. Heat to Kinetic to Electrical to Chemical
C. Kinetic to Chemical to Heat to Electrical
D. Chemical to Heat to Kinetic to Electrical

Answers

Answer:

D. Chemical to heat to kinetic to electrical

The correct energy transformations during the generation of electricity from fossil fuels are D) Chemical to Heat to Kinetic to Electrical

What converts chemical energy to kinetic energy to electrical energy?

Batteries used in torches, computers, toys, and camera cells, are actually made up of chemical cells which convert the chemical energy from the batteries to the electrical energy required for the devices to work well.

What are the main energy types?

Examples of these are light energy, heat energy, mechanical energy, gravitational energy, electrical energy, sound energy, chemical energy, nuclear or atomic energy, and so on. Each form can be converted or changed into the other forms.

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What is Alzheimer's disease??​

Answers

Answer:

Alzheimer's disease is a progressive neurologic disorder that causes the brain to shrink (atrophy) and brain cells to die.

Explanation:

Hope it is helpful.

Thankyou

Answer:

Alzhimers disease is a progressive neurologic disorder that causes the brain to shrink and brain cells to die . Alzhimers disease is the most common causes of dementia - a continious decline in thinking behavorial and social skills that affects persons ability to function indepedently .

When an outbreak of foot and mouth disease is discovered among livestock in a country, what is MOST likely the chosen way to control it?

Answers

Answer:

You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth. To lessen your chance of getting sick, don't touch your eyes, nose, and mouth with unwashed hands.

You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth. To lessen your chance of getting sick, don't touch your eyes, nose, and mouth with unwashed hands.

What are the mechanism that use to resist the antimicrobial agents?

There has been several mechanisms, like resistance to antimicrobial agents, encapsulation or secretation of proteins that affects and might destroy the phagocyte along with some leukocytes in our body perform phagocytosis as a defense mechanism against the pathogenic bacterium.

These phagocytes contain lysosomes, intracellular granules that possess bactericidal substances. When the phagocyte ingests the pathogen, a phagosome is formed, which merges with the lysosome, forming the phagolysosome, which is where toxic substances and enzymes kill the ingested microorganism.

There are several mechanisms by which a microorganism can survive this process as resistance to antimicrobial agents. Some bacteria use phenolic glycolipids from their cell wall, to eliminate toxic oxygen compounds.

Therefore, You can get infected with hand, foot, and mouth disease if you have the virus on your hands and then touch your eyes, nose, or mouth.

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explain how the mammalian skin perform it's role as a thermoregulatory



Answers

Answer:

The skin contains many blood capillaries and sweat glands ,the sweat glands secrete sweat when it is hot.when the sweat evaporates from the skin it cools the body.thermoregulation by the skin occurs through dilation and constriction of the blood vessels.when the bodies temperature raises,the blood vessels carry heat in the blood to the skin.the blood capillaries dilate become wider so that more heat can be lost to the environment.this is called vasodilation.when the outside temperature is low,the blood capillaries constrict become narrower so that less blood flows to the surface of the skin.therefore less heat is lost to the environment this is called vasoconstriction.

I hope this helps

what is uropoiesis?

Answers

Answer:

The production and excrection of urine

Answer:

The production and excretion or urine.

Other Questions
Simplify: 5^(x+2)-45^x215^x 7 steps of narrative my sister watches three movies with her friend last night. (true or false?) In butterflies, having red antennas (denoted by R) is dominant to having white antennas (denoted by r). If both parents are heterozygous for red antennas, what are the predicted Phenotypic outcomes of their offspring? (hint: a punnett square will help you determine this).In butterflies, having red antennas (denoted by R) is dominant to having white antennas (denoted by r). If both parents are heterozygous for red antennas, what are the predicted Genotypic outcomes of their offspring? (hint: a punnett square will help you determine this).All the offspring of a cross between a black-eyed mendelien and an orange-eyed mendelien have black eyes. What is the expected F2 phenotypic ratio of a cross between two F1 black-eyed mendeliens?A) 1 black-eyed:1 orange-eyedB) 3 black-eyed:1 orange-eyedC) 1 black-eyed:3 orange-eyedD) 1 black-eyed:0 orange-eyed Help me please..Create dialogs from 2 pictures aboveI hope you answer it correctly!!! Thank you!! How do i connect WiFi on windows xp without icon? A company purchases and uses 40000 gallons of materials for which they paid $3 a gallon. The materials price variance was $90000 favorable. What is the standard price per gallon? You are dealt one card from a 52-card deck. Find the probability that you are not dealt a heart.The probability is ___. (Type an integer or a fraction. Simplify your answer.) An insurance company offers its policyholders a number of different premium payment options. For a randomly selected policyholder, let X 5 the number of months between successive payments. The cdf of X is as follows: 0 x Are the ratios 5:4 and 8:2 equivalent? yes or no Which of the following molecules contains six bonding electrons?A C2H4B CO2 C H2SD NCl3 I know how to find the distance of two coordinates but not three could someone help me on this?? You roll a six-sided number cube and flip a coin. What is the probability of rolling a number greater than 1 and flipping heads? Write your answer as a fraction in simplest form. What is a major role that fungi play in ecosystems UDISJKDFJSFJDGLFS HELP Set A and the universal set U are defined as follows.U={1,2,3,4,5,6)A= {2,4,6}Find the following sets.Write your answer in roster form or as . An educational software company wants to compare the effectiveness of teaching about supply and demand curves between computer animation presentations and textbook presentation. The company tests the economic knowledge of a number of first-year college students, then randomly divides them into two groups. One group uses the animation and the other studies the text. The company retests all the students and compares the increase in economic understanding between the two groups. Is the study described above an experiment? Why or why not? what is a cubic unit cell ? A publisher reports that 54% of their readers own a personal computer. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 200 found that 44% of the readers owned a personal computer. Is there sufficient evidence at the 0.10 level to support the executive's claim Please help me with this, I am stu pid. UnU