Immediately following mitosis, how many copies of each chromosome does a diploid somatic cell have?
A. 1
B. 2
C. 4
D. 6
Answer: B. 2
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During times of intensive flying, bumblebees use anaerobic respiration to convert glucose to
__________.
a. lactic acid b. carbon dioxide c. acetyl CoA d. oxygen
Which of the following processes act to "tighten" the nutrient spiraling in streams?
A) faster flow B) shredder invertebrates C) collector invertebrates D) higher stream gradient
One experiment in phototropism involved cutting off the tips of grass seedlings before exposing them to light from one side. The decapitated seedlings did not bend toward the light. A valid conclusion from this experiment would be that
A) plants cannot engage in photosynthesis without the tip of the plant. B) light is perceived by the tip of grass plants. C) a foil cover over the tip of the seedlings would cause them to bend. D) hormones are produced in all parts of the plant.
The outer membrane of Gram-negative bacteria enables many antimicrobial drugs to enter the cell more easily.
Answer the following statement true (T) or false (F)