What type of selection is represented by the accompanying figure?
a. no selection
b. natural selection
c. disruptive selection
d. stabilizing selection
e. directional selection
c
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Some surgical procedures involve lowering a patient’s body temperature during periods when blood flow must be restricted. What effect might this have on enzyme-controlled cellular metabolism?
What will be an ideal response?
The capillary wall consists of
a. a thin muscular layer and two layers of endothelial cells. b. a single layer of flat endothelium. c. a layer of endothelium, a layer of muscle and a layer of epithelium. d. five layers of endothelium. e. three endothelial layers and one layer of muscle.
Wolves and bears are placed in the same taxonomic order. Therefore, they must also be classified in the same
a) genus b) family c) phylum d) species e) specific epithet
Put the following events of elongation in prokaryotic translation in chronological order
1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4