What prevents plants and bacteria from experiencing cell lysis?
a. A plasma membrane around cell walls
b. A cytoskeleton of protein fibers
c. Organelles suspended in cytosol
d. A protective nuclear envelope
a. A plasma membrane around cell walls
A plasma membrane around cell walls prevents plants and bacteria from experiencing cell lysis
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Individual species will continually evolve as a result of which evolutionary mechanism?
a. gradualism b. coevolution c. natural selection d. convergent evolution e. punctuated equilibrium
A decrease in the production of C3 would result in
a. increased susceptibility to infection. b. increased numbers of white blood cells. c. increased phagocytosis. d. activation of C5 through C9. e. none of the above
Scottish scientist cloned Dolly from another sheep in 1997. They took an egg cell from a sheep (Mom 1) and removed and discarded the nucleus. They took an udder cell nucleus, that was diploid, from a different sheep (Mom 2). They inserted the nucleus into the egg cell and made this new cell undergo mitosis. They implanted the dividing cell into a surrogate mother (MOM 3). Several months later, Dolly was born. Dolly was actually a clone of which sheep?
a) Mom 1 b) Mom 2 c) Mom 3 d) there is not enough information given to answer this question
When only one nucleotide base is involved in a mutation, this is called
A. chromosomal mutation. B. template error. C. point mutation. D. nonsense codon.