Damage to its flagellum would prevent a choanocyte from
A. circulating water through the sponge.
B. secreting spongin to form the sponge body.
C. producing the supportive spicules.
D. stinging and capturing prey.
Answer: A
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Answer the following statements true (T) or false (F)
1. Bacterial capsules protect bacteria from being phagocytized by leukocytes. 2. A headache is a classic example of a sign of a disease. 3. To cause disease, all bacterial pathogens must first attach to some tissue in the body. 4. Rickettsias and chlamydias are examples of obligate intracellular pathogens. 5. Babesia spp., Ehrlichia spp., and Plasmodium spp. are examples of intraerythrocytic pathogens.
Chemoreceptors located in the aortic and carotid bodies stimulate the respiratory control center in the brain when the blood __________ decreases.
A. PCO2 B. hemoglobin concentration C. pH D. PO2 E. HCO3- concentration
Southern blotting is a process where __________ is transferred from a gel to a __________ where a
probe can be applied. a. DNA; water solution b. protein; water solution c. DNA; nitrocellulose filter d. RNA; nitrocellulose filter e. protein; nitrocellulose filter
Water moves out of filtrate in the nephron tubule into the interstitial fluid by
A) filtration. B) excretion. C) secretion. D) osmosis.