The spindle begins to form in
A. telophase I.
B. prophase I.
C. interphase.
D. telophase II.
B. prophase I.
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Which of the following statements best summarizes the Krebs cycle? a. One six-carbon glucose molecule is broken down to two three-carbon pyruvate molecules
b. NAD+ is regenerated in the final steps of this energy-releasing pathway. c. Acetyl-CoA is broken down to CO2, producing ATP and reduced coenzymes. d. Electrons are passed along an electron transfer chain, pumping protons across the inner mitochondrial membrane.
In pines, the female gametophyte contains _____, each of which contains a(n) _____.
a) archegonia ... egg b) antheridia ... egg c) antheridia ... sperm cell d) archegonia ... sperm cell e) microsporangia ... egg cell
Which part of the ATP molecule breaks free of the rest when an ATP molecule releases energy?
A) part A
B) part B
C) part C
D) part D
A cell contains eight chromosomes at the end of prophase I. How many chromosomes will be in each daughter cell at the end of prophase II?
A) 4 B) 32 C) 8 D) 16