In a growing person, what separates the epiphysis from the bone shaft?
a. collagen
b. matrix
c. the epiphyseal plate
d. periosteum
e. osteons
C
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Alcohol is a waste product produced by yeast in the presence of sugar and the absence of ________.
A. ATP B. H2O C. CO2 D. O2
Which of the following statements best describes the difference between mitosomes and mitochondria?
A. Mitosomes are not involved in ATP production. B. Mitosomes are much larger than mitochondria. C. Mitosomes contain hydrolytic enzymes that help the protozoan digest food particles. D. Mitosomes have one membrane whereas mitochondria have a double membrane.
Which one of the following forms of contraception is the most effective in preventing pregnancy?
A) condom B) rhythm method C) diaphragm D) tubal ligation E) cervical cap
What group of organisms fixes nitrogen?
a. bacteria b. earthworms
c. fungi d. protozoa e. algae