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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Graph A shows that ant species richness
a. peaks at the equator. b. drops by 50 percent at 30 degrees north latitude. c. is less than 50 at 60 degrees north latitude. d. is somewhat greater at 30 degrees north latitude than at 30 degrees south latitude. e. includes all of these
The real goal of hypothesis testing is to
A) eliminate incorrect ideas. B) form a theory. C) fully explain observations. D) understand why science never changes.
Which is mismatched?
A. Benzalkonium chloride - quaternary ammonium compound B. Iodophor - iodine C. Formalin - formaldehyde D. Sodium hypochlorite - chlorine E. Merthiolate - silver
Treatment and control of anthrax includes
A. use of antimicrobics such as ciprofloxacin for active cases. B. vaccination of livestock. C. toxoid for military and those with occupational exposure. D. proper disposal of animals that have died from anthrax. E. All of the choices are correct.