Which of the following is NOT a part of the
cell theory?
a. All organisms are cellular.
b. Cells are the structural and functional units
of life.
c. All cells come from preexisting cells.
d. All cells are approximately the same size.
e. All cells have inheritable material
D
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Food moves along the digestive tract as the result of contractions by _____
A) cardiac muscle B) smooth muscle C) voluntary muscle D) striated muscle E) skeletal muscle
The figure above depicts the result of an experiment to determine how DNA replication occurs. Based
on these results, it appears that after replication each DNA molecule is made of
a. either entirely old DNA strands or entirely new DNA strands. b. one old DNA strand and one new DNA strand. c. entirely new DNA. d. some DNA helix regions that are old DNA, alternating with some DNA regions that are new DNA. e. two strands that are each a mix of old and new DNA.
What would be a consequence of a missing or damaged epiglottis?
a. an inability to swallow food b. digestive acid escaping into the esophagus c. aspiration of food into the lungs d. incomplete neutralization of chyme
Annual growth rings are formed in woody stems principally through the activities of the ____
a. pericycle b. pith c. vascular cambium d. mesophyll e. endodermis