On the illustration, “A” and “B” should be labeled
respectively
a. consumers; producers
b. decomposers; producers
c. producers; redistributors
d. producers; consumers
e. none of these
Answer: d
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Which organisms will not use master genes?
a. Bacteria b. Earthworms c. Fruit flies d. Mice e. Rats
How does the binding of a regulatory molecule to the allosteric site affect the activity of an enzyme? (Check all that apply.)
A. It may change the maximum velocity of the enzyme. B. It may decrease the activity of the enzyme. C. It may increase the activity of the enzyme. D. It may change the affinity of the enzyme for its substrate. E. It causes the enzyme to denature and become inactive. F. It may cause the active site to disappear altogether. G. It may change the shape of the enzyme.
An animal with a ladder-like nervous system is the
A. earthworm. B. hydra. C. planarian. D. cat. E. octopus.
Which is an accurate statement about the anatomy of the human excretory system?
a. Bowman's capsule is a network of capillaries inside the glomerulus. b. The proximal tubule is the portion of the nephron tubule farthest from Bowman's capsule. c. The renal cortex, which contains the nephrons, is interior to the renal medulla. d. The loop of Henle is located between the proximal tubule and the distal tubule. e. The distal tubule of a nephron connects with the renal pelvis of the kidney via the ureter.