What are CD4 cells?
a. T-cells that have a CD4 receptor
b. B-cells that have a glycoprotein receptor
c. HIV antigens
d. red blood cells

Answers

Answer 1

Answer:

I'm pretty sure it is b because CD4 cells are the cells that are a glycoprotein

Explanation:


Related Questions

In humans, normal color perception (N) dominates the expression of color blindness (n), and both of these genes are carried on the X chromosome (XN or Xn). A woman with normal color vision has a color-blind father. Her husband is also color-blind.

a. What is the genotype of the colorblind man? ____
b. What is the genotype of the woman? ______
c. What is the probability of her daughter to be colorblind? __________%
d. What is the probability of her sons to be colorblind? _________%

CAN SOMEONE HELP MEEE eeee

Answers

A- X*Y
B-XHXH
C-50%
D-50%

What two kinds of information do you need to describe the velocity of an object?

Answers

Answer:

magnitude and direction

What type of genotype does a person with a recessive genetic disorder have?

Answers

Answer:

one mutated recessive one and one mutated dominant gene

Explanation: These disorders are usually passed on by two carriers. Their health is rarely affected, but they have one mutated gene (recessive gene) and one normal gene (dominant gene) for the condition.

Answer:

Because it is a recessive disorder both the representative letters will be lowercase. It will look like this, using D as an example: dd

Which organism is a producer?


mouse


snake


owl


grass

Answers

Answer:

Grass

Explanation:

since producer is the first thing in the food chain its grass

Answer:

It is grass Duh!

༼ つ ◕_◕ ༽つ

Produces 4 haploid cells that each have 23 chromosomes. Does this happen for mitosis, meiosis, or both?

Answers

Answer:

Meiosis

Explanation:

Because it forms 4 daughter cells which are haploid (half the amount of  chromosomes as parent cell )

how do you prove the fact that green plant releases Oxygen gas in the process of photosynthesis explain the experiment.​

Answers

Conclusion: Formation of gas bubbles prove that oxygen is produced by the green plants during photosynthesis.

Answer:

Aim : To prove that oxygen is produced during photosynthesis

Procedure : Place water plant in a beaker containing pond water.

Cover the plant with short stemmed funnel.Invert the test tube full of water and cover the stem of the funnel.While placing the test tube, ensure that the level of the water in beaker is above the level of stem of funnel.Expose the apparatus to the sunlight.

After few hours, gas bubbles will form and collect in the test tube.Test the gas in the test tube.

A glowing splinter bursts into the flame shows the presence of oxygen.

Observation: Gas bubbles in a test tube.

Result: Presence of oxygen.

Conclusion: Formation of gas bubbles prove that oxygen is produced by the green plants

es below carefully
Leaf A
Leaf B
Do not compare the size and colour of the leaves.
Based on the diagrams shown above,
state one similarity between Leaf A and Leaf B.​

Answers

Answer:

They both have a petiole

Explanation:

Leaf A and Leaf B both possess a petiole.

A petiole is the part of the leaf found beneath it which attached the leaf to a stem.

Observing both leaves, they both have this in common. Therefore, they are similar because they both have petiole.

If two-parent with AB blood group claim and say that they have a baby with O blood group is born to them and it is their own baby and not adopted. Do you think they are speaking the truth?

Answers

I’m not sure that’s hard ask ur mom lol

Help me plsssss 10 points only sorry The letter c is C. Energy ​

Answers

Answer:

non luminous is your answer.

Ducks are aquatic birds. Their feet are webbed and this trait makes them fast swimmers. Biologists believe that ducks evolved from land birds, which did not have webbed feet. How could this have happened

Answers

Answer:

Random chance mutations led to the webbed feet trait in ancestral land birds, conferring them an adaptive advantage. Birds that inherited the beneficial random mutations associated with the webbed feet trait had more chances to survive and reproduce, passing this trait to the next generations.

Explanation:

Mutations are ramdom changes in the nucleotide sequence of the genome of a particular organism. In general, mutations are deleterious, but mutations may occasionally be beneficial in certain environments. A beneficial mutation must be associated with one or more phenotypic traits capable of conferring an adaptive advantage in a certain environment, thereby the individuals carrying the mutation have more chances to reproduce and survive. In this case, one or more beneficial mutations associated with the webbed feet trait passed to the next generations, increasing their frequency in the population.

_______is the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.

Answers

Answer:

Atomic Number

Explanation:

I found this quizlet it might help for your other problems. It has the same questions and answers.

Here: https://quizlet.com/304016728/genera-bio-ch2-flash-cards/

the atomic number

pls give me brainliest

I need help with this fossil record thing

Answers

Answer:

millions of thousands of species , most of which are evidence of all the fossil record

Explanation:

HOPE IT WILL HELP YOU

An increase in the rate of evolution in a population will be affected by which scenario?

Answers

Answer:

Shorter generation times, and warmer environments.

Do alligators have complete 360 vision?

Answers

Answer:

yes

Explanation:

How can prey and predators be limiting factors for a population?
a. Unpredictable
b. Too many predators or too little prey can decrease a population
c. Too little predators or too many prey can decrease a population
d. Too many predators can limit a population
e. Predators and prey limit popuations

Answers

Answer:

b

Explanation:

your answer is B.

quick explanation: when there is the overpopulation of a predator species and there isnt enough prey for them to eat they risk extinction due to starvation.

1. All living things have a limited lifespan.
True
False

Answers

Answer:

True

Explanation:

Humans have a life span of 60 - 80 years while trees have a life span 1000 - 2000 years, also rats , camels , mosquito, earthworm have a limited lifespan.

How many holes are in the human body?

Project due today.

Answers

Answer:

7

Explanation:

"Seven natural body openings or orifices providing access to an internal cavity through a natural passage called a canal, duct or meatus."

1.Choose the statement that is true about your cells and DNA code.
Group of answer choices

All of your cells have all of the DNA code for your whole body

Each type of cell (hair cell, skin cell, muscle cell, etc.) has its own special kind of DNA

2.True or False: DNA is always turned on all the time in all of your cells.
Group of answer choices

True

False

3.What does DNA do in living things?
Group of answer choices

DNA makes lipids

DNA builds the cell wall

DNA codes for traits (physical features)

Answers

Answer:

1. all of your cells have all of the dna code for your whole body

2. true

3. dna builds the cell wall

Answer: 2 is true i did that

Explanation:

Describe the convalent bond including providing examples of compounds formed through each type of bond ?

Answers

Answer:

is a chemical bond between two non-metal atoms. Like Hydrogen, Oxygen, Carbon are just few.

There is a covalent bond between the oxygen and each hydrogen in a water molecule (H 2 O). Each of the covalent bonds contains two electrons, one from a hydrogen atom and one from the oxygen atom.

Explanation:

Water or Co2 is a covalent bond that be either polar which has a negative charge and positive charge like water that has one negative oxygen and two positive hydrogen. and non polar like Carbon bonding with carbon is both positive.

how are monosaccharides made from a disaccharide ?? And what’s the reaction called ?

Answers

Glucose, galactose, and fructose are monosaccharide isomers, which means they all have the same chemical formula but differ structurally and chemically. Disaccharides form when two monosaccharides undergo a dehydration reaction (a condensation reaction); they are held together by a covalent bond. (Lumen Learning to learn more, or to cite)

Hope this helps!

WILL MARK BRAINLIEST!

Answers

Answer:

Recessive

Explanation:

When there is a skipped generation, the trait must be RECESSIVE. For dominant trait, having 1 dominant allele will give you affected phenotype. It can never give a skipped generation.

Which evidence is provided by fossil record

Answers

The fossil record

This supports Darwin's theory of evolution, which states that simple life forms gradually evolved into more complex ones. Evidence for early forms of life comes from fossils. By studying fossils, scientists can learn how much (or how little) organisms have changed as life developed on Earth.There are gaps in the fossil record because many early forms of life were soft-bodied, which means that they have left few traces behind. What traces there were may have been destroyed by geological activity. This is why scientists cannot be certain about how life began.

Fossils provide a snap shot of the past and allow us to study how much or how little organisms have changed as life developed on Earth.

Does soy milk have lactose?​

Answers

Answer:

Because it comes from plants, soy milk is naturally free of cholesterol and low in saturated fat. It also contains NO lactose. Soybeans and soy milk are a good source of protein, calcium (when fortified), and potassium.

Answer:

no it doesn't have lactose

Explanation:

because it comes from plants it's naturally free of cholesterol and low in saturated fats.

HELLP!!! What do all eukaryotic cells
have in common?

Answers

Answer:

Que todas tienen núcleo y orgánulos variados

Explanation:

Si no poseyeran orgánulos de diversos tipos  ni núcleo, estaríamos hablando de células procariotas  

VA (rod-shaped)
B (spiral-shaped)
C (spherical)

Answers

what is the question? I can't see.

Why is diffusion such an efficient process
for all cells?
A. It does not require energy.
B. It occurs so quickly.
C. The high amount of energy used during diffusion is offset by
the amount it creates.

Answers

Answer:

A.

Explanation:

Diffusion does not require energy. It's depends on the concentration gradient of the two molecules.

Diffusion is such an efficient process for all cells because it does not require energy. Thus, the correct option is A.

What is Diffusion?

Diffusion may be defined as the migration of substances from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.

Diffusion does not require any type of energy for the movement of ions, molecules, or substances. It is a very feasible form of migration of substances.

Diffusion is a type of passive transport and hence takes place in a dropping manner without any expenditure of energy.

Therefore, Diffusion is such an efficient process for all cells because it does not require energy. Thus, the correct option is A.

To learn more about Diffusion, refer to the link:

https://brainly.com/question/94094

#SPJ5

Name:______________________________ DNA Structure Student Practice (12. 1) Modified True/False Statements: If the statement true, write True in the blank. If the statement is is false, write False in the blank and correct the underlined word to make the statement true. The building blocks of DNA molecules are amino acids. DNA molecules contain a 5-carbon sugar called deoxyribose. The nitrogen bases found in DNA molecules include adenine, cytosine, guanine,

Answers

Answer:

- The building blocks of DNA molecules are amino acids. False

- DNA molecules contain a 5-carbon sugar called deoxyribose. True

- The nitrogen bases found in DNA molecules include adenine, cytosine, guanine, and thymine. True

Explanation:

The building blocks of the deoxyribonucleic acid (DNA) are nucleotides, while amino acids are the building blocks of proteins. Each nucleotide consists of one of four possible nitrogenous bases: two purines (i.e., adenine and guanine) and two pyrimidines (i.e., cytosine and thymine). In DNA, each nucleotide consists of one of these four nitrogenous bases, a five-carbon sugar molecule (called deoxyribose), and a phosphate group. The DNA molecule has a double-helix structure, where nitrogenous bases are inside the double helix while sugars and phosphates are outside. In DNA, cytosine always pairs with guanine and thymine always pairs with adenine.

Why is the parietal lobe sometimes called the
"association lobe"?

Answers

Answer:

The parietal lobes are primarily responsible for receiving and processing sensory input such as touch, pressure, heat, cold, and pain. The parietal lobes are also involved in the perception of body awareness and the construction of a spatial coordinate system (mental map) to represent the world around us

Answer:

The parietal lobe is one of the four major lobes of the cerebral cortex in the brain of mammals. The parietal lobe is positioned above the temporal lobe and behind the frontal lobe and central sulcus. ... The name comes from the parietal bone, which is named from the Latin paries-, meaning "wall".

Explanation:

1- Explain the following expression:
"reversible manner".​

Answers

Answer: means that oxyhaemoglobin thus formed can break down at tissues to relaese haemoglobin and oxygen back

Explanation:gooooooooooooooooooooooogle

You have successfully engineered E. coli to make human insulin by adding a transgene that has an E. coli promoter and the coding sequence of human insulin. You try to generate a new strain that would make a lot more insulin by making one with 10 copies of the transgene. Although your genetic engineering is successful, your new strain doesn't make much more insulin. What do you think could have gone wrong

Answers

Answer:are you asking a question?

Explanation:

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