All but one of the events described below occur during spermiogenesis. Select the event that does not occur during spermiogenesis
A) The centrioles migrate to the posterior end of the developing sperm to form the microtubules that make up the flagellum.
B) Mitochondrial DNA is packaged into the nucleus to be delivered to the egg during fertilization.
C) Excessive cytoplasm will be shed to reduce unneeded mass of the maturing sperm.
D) Mitochondria form around the proximal end of the flagellum. They will provide the ATP to drive the motion of the flagellum.
B
You might also like to view...
_____________ is the division of the cytoplasm during cell division
Fill in the blank with correct word.
A cell will swell, and likely burst, if it placed in ____________ solution.
a) an isotonic b) a hypotonic c) a high-salt d) hypertonic
Most of the complications caused by intubation-induced hypoxia:
A) are easily reversible. B) are subtle and occur gradually. C) can be predicted with pulse oximetry. D) are dramatic and occur immediately.
Regarding its role as a neurotransmitter in the CNS, norepinephrine
A. is secreted by brainstem neurons in response to sensory stimulation. B. amplifies weak sensory signals and dampens strong ones so that more information can reach conscious levels. C. is important for maintaining directed attention. D. both "is secreted by brainstem neurons in response to sensory stimulation" and "is important for maintaining directed attention" are correct. E. All of the choices are correct.