The kidneys are important homeostatic organs, contributing to maintenance of all of the following EXCEPT
A. blood pH.
B. blood volume.
C. blood pressure.
D. destruction of worn-out red blood cells.
E. ion concentration of extracellular fluids.
Answer: D
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How is a T-cell receptor different from a B-cell receptor?
A. T-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule. B. B-cell receptors must have antigen broken down inside a cell and presented to them by a Major Histocompatibility Complex (MHC) molecule. C. T-cell receptors are composed of 4 protein chains (pieces), while B-cell receptors are composed of only 2 pieces. D. T-cell receptors are eventually secreted into the bloodstream by activated T-cells, whereas B-cell receptors are not; they always stay with the B-cell.
Bacterial iron chelating proteins are known as:
A. anaphores B. siderophores C. cataphores D. ionophores
)
A. Streptomyces B. Bacillus C. Clostridium D. Toxoplasma E. Penicillium F. Cephalosporium
What are the total gross (not net) final products from one molecule of glucose after glycolysis?
a. four pyruvate, two ATP, and two NADH b. two pyruvate, two ATP, and two NADH c. two pyruvate, four ATP, and two NADH d. one pyruvate, one ATP, and one NADH