The microscopic space between nerve cells is called a:
A) Synapse
B) Node
C) Myelin sheath
D) Cleft
Answer: A) Synapse
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In the figure above, which of the arrows represents the carrying capacity?
A) arrow A B) arrow B C) arrow C D) Carrying capacity cannot be found in the figure because species under density-dependent control never reach carrying capacity.
Which type of bonds hold the two chains of DNA together in a DNA molecule?
a. hydrogen b. polar covalent c. nonpolar covalent d. ionic e. peptide
Provide at least two types of evidence that support the hypothesis of endosymbiosis What will be an ideal response?
Which statement is NOT true about photoperiodism?
A. A long-day plant will flower when the day length is longer than a critical length. B. A short-day plant flowers when the day length is shorter than a critical length. C. A day-neutral plant flowers according to some form of regulation other than photoperiodism. D. The phytochrome form Pfr is converted to Pr in daylight, producing the active form that induces flowering in long-day plants.