A zygote is
a)a haploid cell.
b)a gamete.
c)a direct product of meiosis.
d)All answers are correct.
d)All answers are correct.
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Topoisomerases function to
A) remove nucleotides from DNA. B) join DNA pieces together. C) twist DNA molecules. D) attach DNA loops to scaffold proteins. E) move chromosomes along spindle fibers.
Which of the following is NOT part of the conducting portion of the human respiratory system?
A) Bronchi B) Pharynx C) Larynx D) Trachea E) Alveoli
The founder effect occurs when a small group of individuals start a new population that is not genetically representative of the original population.
a. true b. false
Osmosis occurs when there is a different concentration of solute molecules on each side of the membrane. The drawing below shows a beaker containing a 30% salt solution and a suspended cell containing a 10% salt solution. What statement best describes the cell after 20 minutes?
A. Water will move from the cell into the beaker, resulting in a smaller cell. B. Water will move from the beaker into the cell, resulting in a larger cell. C. Salt will move from the cell into the beaker, resulting in a smaller cell. D. Salt will move from the beaker into the cell, resulting in a larger cell.