Similar genes in two species suggest that the genes have been inherited from a _____________.
Fill in the blank(s) with the appropriate word(s).
Ans: Common ancestor
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When studying endostatin, why did Boehm et al. induce cancer in mice by injecting cancer cells, instead of just doing the experiment on isolated cancer cells in culture?
A. Cancer cells cannot be grown outside of the body in culture. B. Angiogenesis involves multiple tissues in a whole organism. C. Oncogenes are only active in whole tumors. D. Tumor suppressors are only active in whole tumors. E. Cancer cells can go through angiogenesis in culture.
The binding signal recognition particle to the nascent peptide______ protein synthesis
Fill in the blank(s) with the appropriate word(s).
Viruses are not considered to be alive, yet they share this ability with living cells:
a. They can metabolize food b. They can evolve c. They can reproduce on their own d. They can produce cell membranes e. They can synthesize proteins
Which muscle cells are designed for endurance?
A) slow-twitch cells B) fast-twitch cells C) myoglobin D) hemoglobin