If a virus with radioactive DNA infects a bacterium, which part will then be radioactive?
A) the viral protein coat
B) the bacterial protein coat
C) the bacterial RNA
D) the viral DNA inside the bacterium
Answer: D) the viral DNA inside the bacterium
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Clostridium botulinum cannot produce toxins in improperly preserved foods
Indicate whether the statement is true or false.
What are some challenges land plants face compared to life in the water?
A. Obtaining resources from the air and soil instead of from water B. Obtaining and retaining moisture C. Staying upright against the pull of gravity D. All of the above are challenges faced by land plants.
In what ways are hydrogen bonds and ionic bonds similar?
A) Both are based on attraction between atoms that carry differences in electrical charge. B) Both are based on attraction between two atoms that carry negative charges. C) Both are based on repulsion between atoms that carry differences in electrical charge. D) Both involve an even sharing of electrons between atoms. E) Both are based on attraction between two atoms that carry positive charges.
If the antenna complex did not exist in a particular plant mesophyll cell, what effect would that have on photosynthesis?
A. These cells would be unable to absorb any light energy B. These cells would have a reduced capacity to generate glucose C. These cells would be able to fix more carbon dioxide D. There would be no expected effect on photosynthesis