Launchpad 6

Which of the following is NOT true about the eukaryotic cell cycle? Some cells pause between M phase and S phase for more than a year. There are three phases of interphase: the S phase and two gap phases. There are two stages to the cell cycle: M phase and interphase. Interphase is typically the shortest of the two stages of the cell cycle. The M phase consists of two events: mitosis and cytokinesis.

Interphase is typically the shortest of the two stages of the cell cycle.

CDKs are important in the regulation of the cell cycle. They carry out their function by: degrading cyclin proteins. removing phosphate groups from target proteins. preventing the progression of a cell from one stage of the cell cycle to the next. adding phosphate groups to target proteins.

adding phosphate groups to target proteins.

In which phase of mitosis do sister chromatids separate? telophase anaphase prophase metaphase

anaphase

In which phase of mitosis do chromosomes condense? prophase metaphase telophase anaphase

prophase

In which phase of mitosis does the nuclear envelope reform? prophase metaphase telophase anaphase

telophase

A skin cell in G2 of interphase has _____ as much DNA as it had in G1. twice four times exactly one-fourth half

twice

A cell that is not actively dividing is in what phase of the cell cycle? G0 G1' G2 G1

G0

The CORRECT sequence of steps in the eukaryotic cell cycle is: G1 → S phase → G2 → mitosis → cytokinesis. G0 → S phase → G1 → S phase → G2 → cytokinesis → mitosis. G0 → S phase → G1 → G2 → cytokinesis → mitosis. G1 → S phase → G2 → cytokinesis → mitosis. G0 → S phase → G1 → S phase → G2 → mitosis → cytokinesis.

G1 → S phase → G2 → mitosis → cytokinesis.

All of the following happen during mitosis EXCEPT: synthesis of DNA. condensing of chromosomes. formation of the spindle. separation of sister chromatids at the centromeres.

synthesis of DNA.

Processes that regulate cell division in mammals include: activated cyclin-CDK complexes triggering cell cycle events. different cyclins and CDKs acting at different stages of the cell cycle to promote cell division. rapid degradation of cyclins after CDK activation. production of cyclin proteins that activate CDK enzymes. All of these choices are correct.

All of these choices are correct.

The division of the cell's cytoplasm in a eukaryotic cell is known as: cytokinesis. mitosis. both cytokinesis and mitosis.. cell fission.

cytokinesis