Practice Questions

TLS Online TPP Program

#Question id: 1390

Which of the following statements describes the events of apoptosis?

#Section 3: Genetics, Cellular and Molecular Biology

The cell dies, it is lysed, its organelles are phagocytized, and its contents are recycled.
The cell's DNA and organelles become fragmented, the cell dies, and it is phagocytized.
The cell's DNA and organelles become fragmented, the cell shrinks and forms blebs, and the cell's parts are packaged in vesicles that are digested by specialized cells.
The cell's nucleus and organelles are lysed, and then the cell enlarges and bursts.

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TLS Online TPP Program

#Question id: 3795

#Section 3: Genetics, Cellular and Molecular Biology

The exonuclease activity of the DNA polymerases functions to:

TLS Online TPP Program

#Question id: 3796

#Section 3: Genetics, Cellular and Molecular Biology

Incorrect pairing of bases during bacterial DNA replication occurs about once every 10^5 to 10^6 nucleotides, but the spontaneous mutation rate is only one error in 10^9 base pairs. What accounts for the difference?

TLS Online TPP Program

#Question id: 3797

#Section 3: Genetics, Cellular and Molecular Biology

Throughout interphase, _______ are synthesized at a relatively constant rate, whereas _______ are synthesized only during the S phase.

TLS Online TPP Program

#Question id: 3799

#Section 3: Genetics, Cellular and Molecular Biology

If replicating bacteria are given a short pulse of radiolabeled thymidine and rapidly killed, the radiolabel shows up as:

TLS Online TPP Program

#Question id: 3800

#Section 3: Genetics, Cellular and Molecular Biology

If a reaction mixture of replicating DNA is suddenly diluted: