Which phrase describes the starting point for the ovarian cycle?
a. a secondary oocyte arrested in meiosis II
b. a secondary oocyte arrested in meiosis I
c. a primary oocyte arrested in meiosis I
d. a primary oocyte arrested in meiosis II
Ans: c. a primary oocyte arrested in meiosis I
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Typical fat molecules have ____ chain(s)
a. 1 b. 2 c. 3 d. 4 e. 5
Which of the following statements is false?
a. A neuron will not fire unless a stimulus reaches the threshold. b. An action potential is an all-or-nothing event. c. An action potential continues indefinitely until a quenching signal is released. d. An action potential is self-propagating. e. An action potential transmission depends on activities at the membrane.
What term refers to the action of touching the thumb to the tips of the other fingers?
a. Flexion b. Abduction c. Circumduction d. Prehensile e. Opposition
Generation time refers to:
a. the number of years it takes for a generation to die. b. the amount of time required to replicate the DNA in a cell. c. the time it takes to complete one cell cycle. d. the time required for an individual in a species to achieve sexual maturity. e. the time it takes for a new mitotic spindle to form.