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Chapter 1: Q. 4 (page 27)
The first form of life on Earth were ________
a. plants
b. microorganisms
c. birds
d. dinosaurs
As the result, the correct option is.
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Which of the following statements is false?
a. The parasympathetic pathway is responsible for relaxing the body, while the sympathetic pathway is responsible for preparing for an emergency.
b. Most preganglionic neurons in the sympathetic pathway originate in the spinal cord.
c. The slowing of the heartbeat is a parasympathetic response.
d. Parasympathetic neurons are responsible for releasing norepinephrine on the target organ, while sympathetic neurons are responsible for releasing acetylcholine.
Cells in a hypertonic solution tend to:
a. shrink due to water loss
b. swell due to water gain
c. stay the same size due to water moving into and out
of the cell at the same rate
d. none of the above
Active transport of K+ in Malpighian tubules ensures that:
a. water follows K+ to make urine
b. osmotic balance is maintained between waste
matter and bodily fluids
c. both a and b
d. neither a nor b
Figure 10.13 Rb and other proteins that negatively regulate the cell cycle are sometimes called tumor suppressors. Why do you think the name tumor suppressor might be appropriate for these proteins?
Which of the following features does not distinguish humans as a member of phylum Chordata?
a. Human embryos undergo indeterminate cleavage.
b. A spinal cord runs along an adult human鈥檚 dorsal side.
c. Human embryos exhibit pharyngeal arches and gill slits.
d. The human coccyx forms from an embryonic tail
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