Which enzyme unzips or unwinds the two dna strands away from each other?

Within six months of effectively using methicillin to treat S. aureus infections in a community, all new S. aureus infections were caused by MRSA. How can this best be explained? a.

What type of instrument measures seismic waves? A. Mercalli scale B. Seismogram C. Seismic scale D. Seismometer

Which statement correctly compares the masses of protons neutrons and electrons quizlet

The causes wind currents to move in circular patterns.

Which of the following has a negative electrical charge? o cation only o anion only O Both cations and anions have negative charge.

When a cell undergoes mitosis, how many daughter cells are produced? Are they genetically identical or are they different. Why is this important, especially in multicellular organisms?

The structural level of a protein least affected by a disruption in hydrogen bonding is the A. primary level B. secondary level C. tertiary level D. quaternary level

Which of the following statements is true about psychological factors of attraction? A. You are likely to be attracted to someone who is different from you. B. You are likely to be attracted to someone who is physically far away from you. C.

A person that is heterozygous type AB (AB) marries a person that is heterozygous type A (AO). What is the probability that their potential offspring will be type A? A. 0% B. 25% C. 50% D. 75% E. 100%

20% of solute equals what percentage of solvent