_________ and __________suggested that RNA may have been the first molecule to encode genetic information.
Fill in the blank(s) with the appropriate word(s).
Francis Crick, Leslie Orgel
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In terms of gas solubility in sea water, what is the correct relationship?
a. Carbon dioxide > oxygen > nitrogen b. Oxygen > carbon dioxide > nitrogen c. Nitrogen > carbon dioxide > oxygen d. Carbon dioxide > nitrogen > oxygen e. Oxygen > nitrogen > carbon dioxide
In eukaryotes, each type of RNA polymerase recognizes a different
A. start codon. B. promoter. C. release factor. D. transcription factor. E. stop codon.
What is the general term for double-membrane organelles that function in photosynthesis, storage, or pigmentation in plant and algal cells?
a. chloroplasts b. chromoplasts c. amyloplasts d. plastids e. chlorophylls
What can happen when a complement protein encounters an antibody-antigen complex marking a pathogen?
A) The protein can mark the pathogen for destruction by T cells. B) The protein can destroy the pathogen. C) The protein can coat the pathogen to inactivate it. D) The protein can remove the antibody for use elsewhere.