In eukaryotic cells, which occurs during the prophase of mitosis?
A. Duplication of chromatids
B. Replication of DNA
C. Separation of sister chromatids
D. Breakup of the nuclear envelope
E. Appearance of the nuclear envelope
Answer: D
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When an error of mitosis or meiosis results in a diploid gamete, the gamete is said to be ____, which can result in
____.
a. reduced; allopolyploidy only b. reduced; autopolyploidy only c. unreduced; allopolyploidy only d. unreduced; autopolyploidy only e. unreduced; both allopolyploidy and autopolyploidy
In this section of the tissue layers of a cnidarian, which item, A, B, C, or D, is a nematocyst?
1.A
2.B
3.C
4.D
Three of the four organisms listed below are
stramenopiles. Select the exception. a. diatoms b. dinoflagellates c. oomycotes d. brown algae e. none of these belong to stramenopiles
The amount of energy needed to maintain basic metabolic functions is the
a. basal metabolic rate. b. body mass index. c. thermic effect of food. d. basic body index. e. metabolic ratio.