An opening in leaves that functions in the exchange of gases is called a ____
a. cuticle
b. stoma
c. guard cell
d. pit
e. pore
ANSWER: b
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An adult who is suffering from hyperthyroidism
a. is always tired. b. shows lack of emotions. c. is often hungry. d. sleeps a significant amount of the time. e. is never hungry.
Aristotle’s ideas on the natural world were
most consistent with
a. evolution. b. biogeography. c. comparative morphology. d. creationism. e. geology
Gene targeting:a
requires individuals that are homozygous for the knockout gene in every cell. b. is usually studied in organisms in which the knockout gene is homozygous in only one cell type. c. involves the study of knockout genes in the embryo-derived stem cells of mice. d. is a fairly rapid process since it is conducted entirely in vitro. e. involves the excision of the target genes, which are then "knocked out."
Fluid-filled sacs known as ________ function to cushion certain joints, such as the elbow joint
Fill in the blank(s) with correct word