Contact of a sperm with signal molecules in the coat of an egg causes the sperm to undergo _____
A) mitosis
B) depolarization
C) apoptosis
D) vitellogenesis
E) the acrosomal reaction
Answer: E
You might also like to view...
Altering the three-dimensional structure of an enzyme might
A. change the type of substrate that binds the enzyme's active site. B. prevent the substrate from binding the enzyme's active site. C. change the type of product produced in the reaction. D. change the amount of energy needed for a reaction. E. prevent the enzyme from adding energy to a reaction.
_____ is the main technique for the early detection of breast cancer and involves taking an X-ray of the breasts.
A. Mastectomy B. Mammoplasty C. Mastopexy D. Mammograph
At 4:00 p.m. a closed flask of sterile broth is inoculated with 10,000 cells. The lag phase lasts 1 hour. At 9:00 p.m. the log phase culture has population of approximately 41 million cells. The estimated number of generations that has occurred is ________.
A. 21 B. 12 C. 5 D. 27
What structure is formed from both fetal and maternal tissue?
A. Yolk sac B. Amnion C. Placenta D. Chorion