NW2 Review

How is the genetic information contained in our DNA expressed?

• by breaking down proteins within the cell

• by directing the process of protein synthesis

• by regulating the storage of cellular proteins

• by controlling the movement of protein molecules

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Which statement best describes the cells during Stage II?

• The cells have replicated their DNA

• The cells have completed mitosis and cytokinesis

• The cells are resting during the G0 phase

• The cells have stopped because of a cell checkpoint trigger

Answer explanation

The mass of DNA has doubled during the cell cycle, which means the DNA has replicated.

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Which of the following choices is an accurate example of DNA to DNA nucleotide pairing?

• cytosine binds with uracil

• thymine binds with adenine

• guanine binds with adenine

• uracil binds with adenine

Answer explanation

We're going from DNA to DNA in this example...

A - T

G - C

Which of the following aspects of a DNA molecule is responsible for determining the traits of an organism?

• number of phosphates

• amount of thymine

• sequence of nucleotides

• type of bond between bases

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The cell cycle is the series of events that occur in cell division. Which point best represents cytokinesis, the ending phase of cell division?

Answer explanation

Cytokinesis happens at the end of Mitosis, or directly after Telophase.

Remember your hand gestures!

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The process of cell division, in which the chromosomes of a eukaryotic cell are organized, lined up, and separated.

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Before a cell can divide, the full DNA must be

• Replicated

• Deleted

• Transcribed

• Translated

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Which phase of the cell cycle do cells grow, and prepare for DNA replication?

• G1

• S

• G2

• M

DNA replicates during the ​ (a)   . This immediately followed by the ​ (b)   in which the cell prepares for the ​ (c)   : the cell divides during this stage.

• S phase
• G2 phase
• M phase

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A nucleic acid is converted from one type to another. Which best describes this process?

• DNA is transcribed into mRNA.

• mRNA is transcribed into DNA.

• DNA is translated into mRNA.

• mRNA is translated into DNA.

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