Scientists may compare similarities between nucleotide sequences of organisms to determine their
evolutionary history. This is known as:
a. synapomorphy.
b. molecular systematics.
c. monophyletic grouping.
d. cladistics.
e. phenetics
B
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Coastal regions where seawater mixes with fresh water from rivers, streams, and runoff are called ____
a. neritic zones b. estuaries c. benthos d. wetlands e. intertidal zones
What happens when a seed absorbs water and causes the plant embryo to release gibberellin?
a. Glucose levels decrease as a direct effect of gibberellin on the endosperm. b. The aleurone starts expressing amylase inhibiting transcriptional repressors. c. A protein-rich layer of cells surrounding endosperm starts growing in response to the hormone. d. The endosperm absorbs the hormone. e. Amylase is released from the aleurone and breaks down starch in endosperm.
Which pathway yields only two ATP molecules per glucose?
What will be an ideal response?
Which of the following statements about the organs of balance and equilibrium is false?
A. The three semicircular canals of the vestibular apparatus function in dynamic equilibrium. B. At the base of each semicircular canal is a bulging region called the ampulla. C. The brain receives and integrates signals from the semicircular canals on both sides of the head. D. dynamic equilibrium allows you to keep your eyes locked on an object even when you swivel your head or nod. E. Organs in the saccule and utricle act in the sense of dynamic equilibrium.