Which of the following is NOT not true concerning
conifers?
a. They form seeds in female cones.
b. They have needlelike and scalelike leaves.
c. They have a thick cuticle.
d. They have motile sperm.
e. They are mostly evergreen.
Answer: d
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An herbivore
(a) eats plant material. (b) eats producers. (c) is exemplified by a deer. (d) is all of the above.
The production of second messengers in signal transduction offers at least two advantages, speed and
A. specificity. B. amplification. C. one-to-one stochiometry. D. reversibility. E. affinity.
What is the main difference between a virulent and temperate bacteriophage?
What will be an ideal response?
PTH (parathyroid hormone) does all of the following
EXCEPT a. stimulates calcium release from bones. b. suppresses calcium reabsorption by the kidneys. c. enhances osteoclast action. d. activates vitamin D in the gut. e. indirectly stimulates calcium absorption by the gut.