Homologous chromosomes separate during
A. metaphase.
B. anaphase.
C. anaphase I.
D. anaphase II.
C. anaphase I.
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Tom recently started going to the gym, where he has taken up weight lifting. Increases in his
muscle mass are due to __________.
a. cell enlargement b. cell division c. an increase in the number of cells d. all of these
Only ________ available in a particular trophic level is passed to the next trophic level
a. 10% of the energy b. kinetic energy c. 30% of the energy d. potential energy
The first compound light microscopes were constructed by the end of the sixteenth century. What is a compound microscope?
A) they have two different light sources B) it has a moveable stage C) it has two lenses D) its lens is double the size of the original microscope E) the lens has two different colors
What is the function of the low temperature second step in PCR (polymerase chain reaction)?
A) Activation of the DNA polymerase. B) Allowing primers to bind complementary sequences. C) Facilitate DNA synthesis. D) Deactivate DNA polymerase to pause synthesis. E) Facilitate the base pairing of deoxyribonucleotide triphosphates.