Those organisms that can swim strongly against ocean currents are called:
a. plankton.
b. neuston.
c. nekton.
d. macroplankton.
e. epifauna.
C
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Visual accommodation involves the ability to ____
a. change the sensitivity of the rods and cones by means of neurotransmitters b. change the position of the retina c. change the thickness of the lens by contracting or relaxing certain muscles d. protect the eyeball from foreign matter e. prevent eye strain
Four of the five answers listed below are molecules that participate in muscle contraction. Select the
exception. a. sarcolemma b. ATP c. calcium d. actin e. myosin
Describe the two ways in which meiosis produces new combinations of genes. What will be an ideal response?
What keeps the visceral pleura in close proximity to the parietal pleura?
A) positive pressure in the intrapleural space B) surface tension of the intrapleural fluid C) the mesothelia are one and the same D) trans-alveolar pressure E) spider web-like processes extending from the outer covering