Steroids ____.
A. have no fatty-acid component
B. consist of three rings
C. have the same type of functional groups attached to them
D. are a specialized type of wax
E. are a specialized type of phospholipid
Answer: A
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Which of the following would be considered an integral membrane protein? Select all correct choices
A. a protein with its N-terminus in the cytoplasm and its C-terminus in the extracellular space B. a protein attached to a transmembrane protein via hydrogen bonding C. a protein attached to a phospholipid via ionic bonding with the head group of the lipid molecule D. a protein capable of diffusing throughout the cytoplasm of a cell
The hormone indicated by the small oval on the left in the figure could be which of the following?
A. testosterone B. insulin C. growth hormone D. ADH
The vesicle that originates from the Golgi apparatus and contains a variety of digestive enzymes is the ________.
A. ribosome B. centrosome C. inclusion D. lysosome E. magnetosome
Which of the following statements regarding the demonstration of the etiology of disease is FALSE?
A. The suspect agent must be present in all cases of the disease. B. The suspect agent must cause the disease under investigation when introduced into a susceptible host organism. C. The suspect agent must be isolated and cultured in the laboratory. D. It must be possible to re-isolate the suspect agent from the infected experimental host. E. The suspect agent must be the only potential pathogen present in disease cases.