Plant cells removed of cell walls, when placed in distilled water, will ________________.
a. be stable
b. shrivel
c. swell and burst
d. be flaccid
e. be turgid
Answer: c. swell and burst
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Cholera is an example of a pandemic disease that
A) has multiple wild animal reservoirs and is thus difficult to eradicate. B) spreads from a common source and could be controlled with adequate clean water and waste sanitation measures. C) is spread through direct contact and has only a human reservoir. D) has recently emerged due to overcrowding in urban centers.
Match the environmental agent with the type of DNA damage it causes
a. X-rays b. UV radiation c. tobacco smoke d. exposure to oxidizing agents such as household bleach or hydrogen peroxide _____ Addition of bulky sidegroups that hinder proper base pairing _____ Loss of a base from one of the deoxyribose sugars, resulting in a gap in one DNA strand _____ Breaks in one or both of the sugar-phosphate backbones _____ Cross-links between adjacent pyrimidine bases What will be an ideal response?
Both strands of the short, double-stranded regulatory RNA molecules are required by the Slicer protein in order to target the complementary RNA for degradation
Indicate whether the statement is true or false
Proprioceptors provide us with:
A) sight. B) information about the position of the joints. C) the sense of touch. D) hearing.