Comparison of a cancer cell to a normal cell reveals that ____
a. only cancer cell growth is limited by contact inhibition
b. only normal cell growth is limited by contact inhibition
c. cancer cells cannot metastasize, while normal cells can
d. regulation of mitosis is strictly regulated in cancer cells, but not in normal cells.
e. cancer cells remain adherent to other cells, while normal cells do not
ANSWER: b
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The life cycle of the Chinese liver fluke goes through which of the following sequences in its life history?
A. adult, shelled embryo, miracidium, cercaria, sporocyst, rediae, metacercaria, adult B. adult, shelled embryo, miracidium, sporocyst, rediae, cercaria, metacercaria, adult C. adult, shelled embryo, miracidium, metacercaria, sporocyst, rediae, cercaria, adult D. adult, miracidium, sporocyst, rediae, cercaria, metacercaria, shelled embryo, adult E. adult, shelled embryo, sporocyst, rediae, cercaria, metacercaria, miracidium, adult
All of the following are factors in enzymecatalyzed
reactions that work alone or in combination to lower the activation energy EXCEPT a. helping substrates get together. b. orienting substrates in positions favoring reaction. c. breaking the laws of thermodynamics. d. shutting out water molecules. e. inducing a fit between enzyme and substrate
Dividing adult eukaryotic cells spend most of their time in which of the following?
A) metaphase B) prophase C) telophase D) interphase E) anaphase
Prokaryotic cells are diploid
Indicate whether the statement is true or false