During DNA replication, the primary role of DNA polymerase I is to?
a. synthesize DNA in the 5' to 3' direction only on the leading strand
b. unwind DNA at the replication fork
c. prevent single stranded DNA in the replication bubble from forming secondary structures
d. remove RNA primers from newly synthesized strands of DNA
Ans: d. remove RNA primers from newly synthesized strands of DNA
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Which of the following must be provided to the BLAST program for identifying homologous sequences within the database?
A. nucleotide sequence B. amino acid sequence C. protein molecular weight D. protein molecular weight or nucleotide sequence E. nucleotide sequence or amino acid sequence
Water molecules are attracted to each other due to the opposite charges created by partial charge separations within the molecules. These attractions are called:
A. peptide bonds. B. covalent bonds. C. ionic bonds. D. hydrogen bonds. E. double bonds.
Part of the experiment without the variable being tested; standard for comparison in an experiment
During contraction
A. cross bridges of muscles filaments are broken and reformed B. ATP is used C. depletion of oxygen and glycogen will lead to muscle fatigue D. all of the above