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spayn [35]
3 years ago
12

Which of these describes the B-cells within the immune system ?

Biology
1 answer:
jeyben [28]3 years ago
6 0
<h2>Answer:</h2>

The option D is correct.

<u>B cells are memory producing cells.</u>

<h3>Explanation:</h3>

As B cells are the specific receptor  cell, after immunity to certain infection of the foreign particle, there is a function of acquired immunity is the protection of the body from that particular infection for the whole life which is done by <u>memory cells of B lymphatics.</u>

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Which lipoprotein picks up cholesterol from your arteries and other places in the body and returns it back to the liver for furt
evablogger [386]

High-density lipoproteins (HDL) refer to macromolecular complexes made up of lipids and that have the function of transporting dietary lipids to the liver.

<h3>What are lipoproteins?</h3>

They are macromolecules whose function is to package insoluble lipids in the aqueous medium of plasma and transport them from the intestine and liver to peripheral tissues and, from these, return cholesterol to the liver for elimination from the body.

<h3>Characteristics of High Density Lipoproteins (HDL)</h3>

  • They are synthesized and secreted by the liver and to a lesser extent by the intestine.

  • They transport cholesterol from peripheral tissues to the liver, this is known as “Reverse Cholesterol Transport”.

Therefore, we can conclude that lipoproteins are macromolecules whose function is to transport lipid molecules from one organ to another in the aqueous medium of plasma.

Learn more about lipoproteins here: brainly.com/question/16170788

3 0
2 years ago
How do enviornmental factors affect the abundance of traits within a population?
RSB [31]

Answer:

Explanation:

many things can affect traits within a population some examples of this is

abuse, negative emotions, drugs, synthetic substances, temperature, and light are among the outer ecological variables that can figure out which qualities are turned here and there, in this way impacting the manner in which a life form creates and works.

and no I did not copy this from online

3 0
3 years ago
Which of these is not a function of connective tissue in the body?
Brilliant_brown [7]
The correct answer is E
8 0
3 years ago
I NEED HELP PLEASE ITS TIMED, I DO NOT UNDERSTAND ITS TEN POINTS IF YOU ANSWER
Rasek [7]

Answer:

The answer is B

Explanation:

It is the only answer that actually makes sense

7 0
2 years ago
Read 2 more answers
Genetic variation helps populations adapt to a changing
timama [110]

Answer:

Please find the explanation below

Explanation:

Sexual reproduction is the kind of reproduction that requires two organisms (male and female) to form an offspring. The male organism produces gametes called SPERM while the female organism produces gametes called EGG. These two gametes come together in a process called FERTILIZATION to produce a zygote, which develops into an offspring.

In sexual reproduction, gametes are produced by organisms involved via a process called MEIOSIS. Meiosis, however, reduces the chromosome number of the gametes by half. However, one process unique to only meiosis and sexual reproduction is called CROSSING OVER.

Crossing over is the process whereby chromosome segments is exchanged between non-sister chromatids of homologous chromosome. This process causes a recombination of chromosomes (alleles) in such a way that the gametes will be genetically different from the parent organisms (genetic variation). According to this question, sexual reproduction leads to more genetic variation than asexual reproduction due to the process of CROSSING OVER that occurs in sexual reproduction.

4 0
3 years ago
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