Which of the following is not a secondary
sexual trait?
a. rounded hips in females.
b. deep voice in males.
c. facial hair in males.
d. rounded breasts in female.
e. testes in males
E
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A chemical that comes from outside the ecosystem is referred to as a(n) ________ chemical
A) synthropic B) lithotrophic C) allochthonous D) pleomorphic
The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the green arrow is pointing?
A. At this point in the cell cycle, the cell has determined that the DNA is intact and environmental conditions are favorable for DNA replication.
B. At this point in the cell cycle, chromosomes have properly aligned on the metaphase plate and are beginning to separate.
C. At this point in the cell cycle, DNA has already been replicated correctly and the cell is preparing for mitosis.
D. At this point in the cycle the cell is determining if environmental conditions are favorable for growth and proliferation.
E. At this point in the cycle the cell is continuing to grow and make abundant tubulin proteins.
Which of the following is not a factor that increases mutations?
A. Replication error B. Fast rates of replication C. UV radiation D. Ionizing radiation E. Repair enzymes
Some vertebrates like frogs and humans do not have a conspicuous tail, yet even humans have the remnants of one known as the
A. sacrum. B. coccyx. C. fundus. D. lumbar.