The ability of sperm cells to move along the ductus deferens is due to ________
A) hormonal action
B) gravity
C) enzymatic activity
D) peristaltic contractions
D
Explanation:
A) It is not hormonal action that moves sperm cells along the ductus deferens.
B) It is not gravity that moves sperm cells move along the ductus deferens.
C) It is not enzymatic activity that moves sperm cells along the ductus deferens.
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Natural immunity is acquired during vaccination
Indicate whether the statement is true or false.
Drinking too much plain water in a short period of time can result in water intoxication. As a result, blood plasma will become hypotonic. What effect do you think this would have on blood cells?
a. Cells may be lysed. b. Cells will be plasmolyzed. c. Cells will be crenated. d. Cells will not change.
A substance found in plasma but not in serum is:
a. fibrinogen b. antibodies c. formed elements d. both A and B above
Lipid-soluble hormones can be more easily excreted once they have water-soluble molecules added to their structure in a process called ________.
A. saponification B. protein-binding C. amplitude-modulation D. conjugation