At approximately what age does bone growth stop?
a. 25
b. 30
c. 16
d. 20
e. 28
D
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Which of the following is the correct sequence
involved in the regulation of organ systems? a. stimulus, receptor, integrator, response, effector b. stimulus, response, integrator, receptor, effector c. stimulus, receptor, integrator, effector, response d. stimulus, integrator, receptor, effector, response e. stimulus, effector, integrator, receptor, response
The sex of a human is determined by:
a. the number of chromosomes. b. the number of autosomes. c. the presence of only one X chromosome. d. the number of sex chromosomes. e. the presence of a Y chromosome
When a moss spore lands in a suitable spot, it germinates and grows into a filament
of cells called a: a. seta. b. archegonia. c. megaspore. d. protonema. e. prothallus
In any DNA molecule, the number of guanine bases will:
A) always be equal to the number of thymine bases. B) always be equal to the number of adenine bases. C) always be equal to the number of cytosine bases. D) sometimes be equal to the number of thymine bases and will sometimes be equal to the number of adenine bases. E) sometimes be equal to the number of cytosine bases and will sometimes be equal to the number of adenine bases.