Which network of protein filaments reinforce the inner surface of the nuclear envelope in animal cells?
a. actins
b. tubulins
c. lamins
d. chromatins
Answer: c. lamins
Biology & Microbiology
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Populations of the snail Cepaea nemoralis exhibit three color morphs, a good example of a ________ trait
A) continuous B) discontinuous C) quantitative D) polygenic E) B, C, and D only
Biology & Microbiology
Which of the following statements is true about insects that feed internally in plants?
a. Always endopterygotes (complete metamorphosis) b. Almost always larve c. Only Coleoptera (beetles) and Lepidoptera d. Both a and b e. All of the above
Biology & Microbiology
The only marsupial mammal living in North America is the
A. raccoon. B. wombat. C. weasel. D. opossum. E. ring-tailed cat.
Biology & Microbiology
The temperature range within which an organism can survive is known as:
Biology & Microbiology