Four of the five features listed below are

characteristic of adult sea stars. Select the exception.
a. spiny skin
b. tube foot
c. water-vascular system
d. bilateral symmetry
e. ampulla


Answer: d

Biology & Microbiology

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In skeletal muscle contraction, ____ directly fuels the movement of the myosin head

a. glucose b. fatty acids c. GTP d. ATP e. an H+ gradient

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The pH of a tide pool can change dramatically over short time periods

Indicate whether the statement is true or false

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In sweet peas, dominant alleles C and P are necessary for colored flowers. In the absence of either (__ pp or cc __) or

both (cc pp), the flowers are white. Give the probable genotype of a plant with colored flowers and a plant with white flowers that produced 38 plants with colored flowers and 42 plants with white flowers. What will be an ideal response?

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What is a nerve?

A) a bundle of neurons B) a chain of neurons C) a sensory synapse D) a series of impulses

Biology & Microbiology