Which of the following events probably made the evolution of cellular respiration possible?
a. Accumulation of carbon dioxide in
atmosphere
d. Emergence of eukaryotes
b. Emergence of prokaryotes e. Emergence of plants
c. Accumulation of oxygen in atmosphere
C
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The process by which a molecule splits into two smaller ones is
a. condensation. b. cleavage. c. functional group transfer. d. electron transfer. e. rearrangement.
Suppose that students in the laboratory periods before you removed some of the purple and yellow corn kernels from the ears of corn as they were performing the Experimental Procedure. What specific effects would this have on your results?
What will be an ideal response?
The posterior lobe of the pituitary gland secretes:a
ADH. b. ACTH. c. TSH. d. FSH. e. LH.
Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all seventeen patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertion sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and
skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages because they A) are aerobic. B) can tolerate low-moisture conditions. C) prefer a neutral environment (pH 7). D) have a fermentative metabolism. E) cannot tolerate high osmotic pressure.