Place the five steps of digestion in most animals with a digestive tube in the proper order
a. absorption ? enzymatic hydrolysis ? mechanical processing ? secretion of enzymes ?
elimination
b. absorption ? mechanical processing ? enzymatic hydrolysis ? secretion of enzymes ?
elimination
c. mechanical processing ? absorption ? secretion of enzymes ? enzymatic hydrolysis ?
elimination
d. mechanical processing ? secretion of enzymes ? enzymatic hydrolysis ? absorption ?
elimination
e. mechanical processing ? secretion of enzymes ? absorption ? enzymatic hydrolysis ?
elimination
D
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The tight packing of chromatin into the chromosomes visible during nuclear division is possible due to links between
____ proteins.
a. Cdk b. H1 histone c. H3 histone d. H4 histone e. nonhistone
Base pairing
a. occurs between identical bases. b. requires hydrogen bonds. c. takes place between sugars and phosphates on the two strands in a helix. d. explains the X-ray results from Rosalind Franklin. e. occurs between A and C.
Cellular respiration
oxidizes glucose and reduces oxygen. oxidizes oxygen and reduces glucose. releases energy and reduces water. requires energy and releases NADH. releases energy and oxygen.
Who introduced the "two-part" system (genus and species) that biologists use to name organisms?
A) Aristotle B) Linnaeus C) Whittaker D) Woese E) Darwin