Volume increases by the __________ of the
diameter, and surface area increases by __________
of the diameter. a. square; doubling
b. square; the cube
c. cube; the square
d. cube; the cube
e. none of these
Answer: c
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How do stabilizing and disruptive selection differ?
A. Stabilizing selection produces adaptation. Disruptive selection is nonadaptive. B. With stabilizing selection, the phenotype for a trait does not influence survival. With disruptive selection, the phenotype for a trait affects survival. C. Stabilizing selection reduces the amount of variation in a trait. Disruptive selection increases the amount of variation in a trait. D. With stabilizing selection, extreme individuals have high biological fitness. With disruptive selection, extreme individuals have low biological fitness.
The circulatory system is the only way by which an animal can supply oxygen and nutrients to its cells, or remove waste materials from the cells.
Answer the following statement true (T) or false (F)
Because small quantities of powerful explosives can be hidden easily, a sensor that could detect trace amounts of illicit chemicals would be a useful tool. What animal sensory modality is exquisitely sensitive to minute quantities of airborne chemicals?
Honeybees have an incredible ability to distinguish thousands of different odorant molecules, using their large repertoire of olfactory receptors. A wide variety of different types of chemicals can be detected as odorants -- they simply require olfactory neurons with a receptor that can bind the chemical and transduce that stimulus into a receptor potential. A. olfaction B. taste C. vision D. hearing E. touch
The pituitary gland is regulated most directly by the:a
pineal gland. b. hypothalamus. c. thymus gland. d. adrenal gland. e. thyroid gland.