Antibiotics exploit differences in structure between prokaryotes and eukaryotes in order to selectively attack pathogenic bacteria without affecting the human host. Unique features of bacteria that are targeted by antibiotics include __________.
Fill in the blank(s) with the appropriate word(s).
Answer: cell wall containing peptidoglycan and distinctive ribosomes
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Microevolution involves
A. an increase in the number of individuals in a population, but not a change in allele frequency. B. changes in a population's gene pool. C. changes in the ratio of males to females in a population. D. an increase in the number of individuals and a change in the ratio of males to females. E. an increase in migration, but not a change in allele frequency.
Synesthesia occurs when
a. one sense is confused with another. b. two senses are perceived together. c. three senses are perceived together. d. sight and vision are perceived together. e. vision, taste, and pain are perceived together.
There is genetic evidence of interbreeding
between Homo neanderthalensis and H. sapiens about ___ years ago but not after ___ years ago.
a. 6000---4000 b. 60,000---40,000 c. 600,000---400,000 d. 600---400 e. there is no genetic evidence of interbreeding between these two species
Which of the following does NOT decrease the absorption of non-heme iron?
a. phytates b. polyphenols c. oxalates d. calcium