If an mRNA carries AUCGUG as a sequence,
what would be the sequence of the DNA
complement to the sequence of DNA that is the
complement to the mRNA?
a. ATCGTG
b. TCGCAC
c. CGATCT
d. GCTACA
e. UAGCAC
A
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You are a doctor who examines a swollen and warm puncture wound on the hand of a patient. Because the wound was made by a rusty nail, you are concerned about infection by Clostridium tetani bacteria, which cause tetanus
You are relieved to see that the patient received a tetanus vaccine at her last checkup. The vaccine ____________. A. exposed the patient to C. tetani so that she contracted a mild version of tetanus. B. exposed the patient to deactivated C. tetani, so that her B cells would produce antibodies to the bacteria with minimal risk of contracting the disease. C. stimulated the production of mast cells by her bone marrow. D. exposed the patient to other types of bacteria, so that her immune system would be prepared for infection by prokaryotes.
The helix-turn-helix motif found in many regulatory proteins fits into the side of a DNA molecule. If a
newly discovered enzyme has a helix-turn-helix motif, you would predict that
a. this enzyme has multiple peptide chain subunits. b. this enzyme is probably able to bind to RNA, too. c. this enzyme probably binds to DNA. d. this enzyme has an allosteric regulator. e. this enzyme is a polymerase that helps synthesize new DNA sequences.
The trophic level that an organism belongs to
a. is determined by what it uses as an energy source. b. determines the population it belongs to. c. can be thought of as its feeding level. d. is both a and c.
Any speciation that does not involve geographic isolation is a type of ________ speciation
Fill in the blank(s) with correct word