Which of the following statements is false?
a. Xylem vessels are similar to drinking straws.
b. The transport of water in xylem is due to
positive pressure generated by the root.
c. The stomata of most plants close at night.
d. Water is drawn up to the top of a tree by the pull
of transpiration.
e. Plants absorb the majority of needed elements
from water and soil.
Answer: b
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A. ozone B. CFCs C. carbon monoxide D. carbon dioxide E. methane
Aldehydes are highly effective germicidal agents because they damage (lipids/cell walls/DNA)
Fill in the blank(s) with the appropriate word(s).
Neandertals were:
A. Archaic Homo sapiens B. Larger brained than modern humans C. Adapted to cold environments D. All of the above E. None of the above
Polypeptide chains are synthesized from _____ instructions by _____.
A) mRNA, ribosomes B) mRA, lysosomes C) tRNA, DNA D) tRNA, ATP