In a prokaryotic genome, either insertion elements OR transposons are present, but both are never present at the same time
Indicate whether the statement is true or false.
Answer: FALSE
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Translation requires _____
A) mRNA, tRNA, DNA, and rRNA B) mRNA, DNA, and rRNA C) mRNA, tRNA, and rRNA D) mRNA, tRNA, and DNA
Consider the following two statements about protein structure: 1) All polypeptides have tertiary structure. 2) All proteins have quaternary structure. Determine which one of the statements below is correct
A. Statements 1) and 2) are both true. B. Statements 1) and 2) are both false. C. Statement 1) is true; statement 2) is false. D. Statement 1) is false; statement 2) is true.
The hexameric model of DNA unwinding proposes that:
A. DNA strands are separated prior to helicase binding. B. one dimer is responsible for ATP hydrolysis. C. two dimers rotate the responsibility of ATP hydrolysis. D. three dimers rotate the responsibility of ATP hydrolysis. E. dimer conformational changes drive ATP hydrolysis.
In an antibody-mediated immune response,
with which cells do naive helper T cells interact?
a. antigen presenting B cells b. effector helper T cells c. memory B cells d. antigen presenting dendritic cells e. more than one of these