If DNA repair mechanisms were perfect, which of the following would most likely result?
A. We would live forever.
B. Evolution as we know it would stop
because mutations are the only agent that
gives us new genetic variation.
C. The rate of evolutionary change would
dramatically increase.
D. Humans would stop aging, as aging is a
collection of DNA mutations.
E. All of the answer options are correct.
B
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Referring to Figure 5-21, which of the following modifications requires ATP?
A. methylation B. ubiquitination C. myristoylation D. acetylation E. adenylylation
Compare feeding in a sponge, a cnidarian, and an annelid
What will be an ideal response?
You find a green organism in a pond near your house and believe it is a plant, not an alga. The mystery organism is most likely a plant and not an alga if it _____
A) contains chloroplasts B) is surrounded by a cuticle C) does not contain vascular tissue D) has cell walls that are comprised largely of cellulose
What chromosomes belong to a normal human male?
A) 22 autosomes and two Y chromosomes B) 44 autosomes and two Y chromosomes C) 44 autosomes, one X chromosome, and one Y chromosome D) 46 autosomes, one X chromosome, and one Y chromosome