During an acrosome reaction, the acrosome:a
detaches, allowing the sperm to penetrate the egg.
b. releases enzymes that digest the outer layer of the egg.
c. secretes calcium ions, which cause the sperm to fuse with the egg.
d. releases bindin, which causes the sperm to bind to the egg.
e. secretes a chemical that attracts the egg to the sperm.
B
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Angela believes her house is too cold in the winter and thinks it is because her furnace is not working properly. Which of the following has Angela done?
a. Inductive reasoning b. Tested a hypothesis c. Created a hypothesis d. Created an experiment
Trichonympha is a unicellular flagellated protist that lives within termites and allows the termite to be able to "digest" wood. Trichonympha is which of the following?
A. a slime mold B. a protozoan C. an alga D. a diatom E. an apicomplexan
Which of the following evolve?
a. populations b. genera c. kingdoms d. both populations and genera e. populations, genera, and kingdoms
A given enzyme works on
A. any number of different substrates. B. one of two possible substrates. C. no substrate. D. one type of substrate.