Some of the daughter cells resulting from clonal selection of a B cell differentiate into plasma cells. Which of these is a function of plasma cells?
A) They produce specific antibodies and release them into the blood.
B) They transform into helper T cells and bind to antigens displayed by a dendritic cell.
C) They act as natural killer cells and destroy cancer cells.
D) They are responsible for cell-mediated immunity.
A
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Pieces of deoxyribonucleic acid (DNA) that move from one genetic element to another and contain genes for movement and genes for other features are called:
a. transposons. b. insertion sequences. c. plasmids. d. chromatoids.
Insulin promotes the storage of glucose via all of the following methods except:a
stimulating protein synthesis. b. reducing the use of fatty acids as fuel. c. promoting the liver to release glucose. d. stimulating fatty acid storage in adipose tissue. e. stimulating glycogen formation.
Which of the following is TRUE regarding faith-based beliefs and scientific theories?
A) Both faith-based beliefs and scientific theories can be proven. B) Scientific theories are not modifiable, but faith-based beliefs are. C) Any and all faith-based beliefs can be disproven, but scientific theories cannot. D) Faith-based beliefs can become scientific theories. E) Any and all scientific theories can be disproven, but faith-based beliefs cannot.
Depending on the species, how many stomata are there on a single leaf?
1) Tens to hundreds 2) Hundreds to thousands 3) Thousands to millions 4) All of the above