Which of the following is most likely to stop sexually transmitted diseases (STDs)?
A) IUD
B) diaphragm
C) tubal ligation
D) latex condom
D
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The ectoderm is to the central nervous system as the mesoderm is to the
A. epidermis. B. respiratory tube. C. digestive tract. D. skeletal muscle. E. peripheral nervous system.
A stretch receptor is classified as a
a. chemoreceptor. b. mechanoreceptor. c. photoreceptor. d. thermoreceptor. e. all of these
Aminoacyl-tRNA synthetases __________ link __________ to their respective tRNA molecules
a. ionically; mRNAs b. loosely; mRNAs c. terminally; codons d. covalently; amino acids e. enzymatically; codons
Fall is coming, with the prospect of frost, so you decide to pick the last tomatoes on the vine even though they are still green. If you wanted to ripen these tomatoes, which method would be most effective?
A) Put the green tomatoes in a paper bag, and keep the top of the bag open. B) Put the green tomatoes in a dark closet, but with a flash of light about every 4 hours. C) Put the green tomatoes in a plastic bag with an overripe apple. D) Store each green tomato in a separate plastic bag and put them in the dark.