Only lymphocytes possessing receptors that can bind with the antigens on an invading pathogen are involved in the immune response against it.
<h3>Are receptors and antibodies the same?</h3>
B cell receptor refers to an immunoglobulin molecule which serves as a type of trans membrane protein on the surface of B cells while an antibody refers to a blood protein that the B cells produce in response to and counteracting a specific antigen.
Thus, this is the main difference between B cell receptor and antibody.
<h3>What is the purpose of the antigen receptor?</h3>
Its function is as a receptor that recognizes and binds antigen by the V regions exposed on the surface of the cell, thus transmitting a signal that causes B-cell activation leading to clonal expansion and specific antibody production.
Learn more about receptors and antigens here:
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The correct answer is (b) Toxicologists.
Toxicology is a branch which includes pharmacology, biology, chemistry and medicine. This involves the study of adverse effects of chemical substances (spills) on the environment. The toxicologists studies the dose of chemical spills and the and its influence on the organism. Some factors affecting the chemical toxicity includes dosage and environment.
Answer:
D. Farrow-to-finish operations raise hogs throughout their lifetime, feeder operations raise young hogs, and finisher operations raise older hogs
Explanation:
Hog farms operate in three different categories:
Farrow-to-finish: This involves breeding sows to produce offspring. The offspring's are then fed until they are have reached the size for slaughter. The entire process takes throughout the hogs lifetime.
Feeder operations: This involves breeding sows and then selling their piglets to other farmers who will then raise them for till they are matured for slaughters. This process is just to raise young hogs.
Finisher operations: This involves buying piglets from other farmers and then raising them until they are matured for slaughter. This finisher operations raise older hogs
The correct answer is B.) Contraction
This membrane is called a selectively permeable membrane as it only allows for the entry of specific substances and does not allow of others.
