Which of the following is NOT an advantage of using the diaphragm?
A) It maintains high user effectiveness even without added spermicide.
B) It is relatively safe and ensures considerable spontaneity in making love.
C) It is relatively inexpensive.
D) It has limited side effects.
Answer: A) It maintains high user effectiveness even without added spermicide.
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Salivary amylase is produced by
a. parotid glands only. b. sublingual glands only. c. submandibular glands only. d. parotid glands and sublingual glands only. e. parotid glands, sublingual glands, and submandibular glands.
Over a period of many generations, a single species of snake has changed to the point that organisms from two different areas are no longer able to interbreed. This is an example of
A. divergent evolution. B. polyploidy. C. adaptive radiation. D. convergent evolution.
A society:
A) is a network of human relations that includes ideas, institutions, and material things. B) refers to structures and processes that authoritatively make and apply rules. C) refers to a broad term encompassing a range of actions and institutions. D) is a basic way of seeing the BGS relationship.
Operons ___________________________
(a) are commonly found in eukaryotic cells. (b) are transcribed by RNA polymerase II. (c) contain a cluster of genes transcribed as a single mRNA. (d) can only be regulated by gene activator proteins.