Which of the following is/are advantages of using bacteriophage to treat human bacterial infections?
A. Bacteriophage can kill the bacteria.
B. Bacteriophage are very specific for the target bacteria and won't affect normal microbiota.
C. Bacteriophage will not cause disease or harm humans.
D. All of the choices are correct.
Answer: D
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What is the net movement of molecules from an area of higher concentration to an area of lower concentration?
a. Osmosis b. Diffusion c. Redox-reaction d. Electron transfer chain e. Metabolic pathway
During the growing season, when there is often 24 hours of daylight, plants and lichen cover the ground in which of the biomes?
a. boreal forest b. chaparral c. arctic tundra d. temperate grasslands
Which of the following is NOT true about
asexual reproduction?
a. offspring of asexual reproduction are genetically the same as their parent b. no mammals are known to reproduce asexually c. many invertebrates reproduce asexually d. asexual reproduction is advantageous in changing environments e. all of these are true about asexual reproduction
Would there be a cost of sex if sexual reproduction was isogamous?
a. No, females would not pay the twofold cost of sex. b. Yes, sex may break up coadapted gene complexes. c. No, females would still transmit the same proportion of their genes to the next generation. d. Yes, despite contributing the same proportion of offspring as asexual fe-males, isogamous sexual females would only transmit half the proportion of their genes to the next generation.