Explain the cohesion-tension theory. What will be an ideal response?
ANSWER: By the cohesion–tension theory, water is pulled upward through a plant by air's drying
power, which creates a continuous negative pressure called tension. The tension extends from
leaves at the tips of shoots to roots that may be hundreds of feet below.
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When glucose is used as the energy source, the
largest amount of ATP is produced in a. glycolysis. b. acetyl-CoA formation. c. the Krebs cycle. d. substrate-level phosphorylation. e. electron transfer phosphorylation
Which event occurs during the elongation
stage? a. Peptide bonds form. b. Free amino acids bind to the mRNA binding site. c. Anticodons bind to complementary codons. d. A STOP codon enters the ribosome. e. Peptide bonds form, and anticodons bind to complementary codons
What type of matrix does adipose (fat) tissue exhibit?
A) liquid B) viscous C) solid D) fibrous
The leaflike appendages of moss gametophytes may be one- to two-cell-layers thick. Consequently, which of these is least likely to be found associated with such appendages?
A) cuticle B) rosette cellulose-synthesizing complexes C) stomata D) peroxisomes E) phenolics