Cell Cycle

Multiple Choice

The life cycle of a frog illustrated in the diagram. Which statement best explains how the cell cycle is important to the life cycle of the frog?

• It enables frogs to produce tadpoles that are clones

• It allows the frogs to grow, develop, and reproduce

• It prevents overproduction of frog offspring

• It ensures the best adapted frogs survive and pass on traits to offspring

Multiple Choice

The model of the cell cycle includes two arrows that each represent a process in the cycle. What do the two arrows represent?

• Arrow 1 represents prophase, and Arrow 2 represents interphase

• Arrow 1 represents mitosis, and Arrow 2 represents meiosis

• Arrow 1 represents interphase, and Arrow 2 represents mitosis

• Arrow 1 represents meiosis, and Arrow 2 represents prophase

Multiple Choice

The diagram shows the major stages of the cell cycle and the percentage of time spent in each phase. Which statement best describes why a cell spends the majority of its time in interphase?

• The cell is aging and processes are stopping as lysosomes clear dead cell matter away

• The cell needs time to synthesize spindle fibers to complete mitosis

• The cell needs time to complete cytokinesis

• The cell is growing and carrying out processes such as metabolism and DNA replication

Multiple Choice

The activities in the cell cycle occur during specific phases. In which phase of the cell cycle is DNA replicated?

• mitosis

• G1

• S

• G2

Multiple Choice

Scientists determined the total mass of DNA from a sample of animal cells. The masses of equal numbers of cells were taken during three different stages in the cell cycle. Stage I contains cells massed during G1. Which statement best describes the cells during Stage II?

• The cells have replicated their, DNA but have not completed mitosis and Cytokinesis

• The cells have completed mitosis and cytokinesis without replicating their DNA

• The cells have replicated their DNA and completed mitosis and cytokinesis

• The cells have temporarily exited the cell cycle without replicating their DNA

Multiple Choice

People who have leukemia, a cancer that affects white blood cells, are often given Cytarabine. This drug inhibits the synthesis of DNA. Which phase of the cell cycle is most affected by Cytarabine?

• G1

• S

• G2

• M

Multiple Choice

Which table best compares the events that occur during different stages of the cell cycle?

Multiple Choice

Scientists can bioengineer skin in a laboratory to treat severe burns and other types of skin injuries. This bioengineered tissue is grown from living cells. The cellular process that enables the cells to grow and develop into tissue is-

• conjugation

• mitosis

• budding

• binary fission

Multiple Choice

Which model accurately shows a cell progressing through mitosis?

• A

• B

• C

• D

Multiple Choice

A photomicrograph of onion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow?

• prophase

• metaphase

• anaphases

• telophose

Multiple Choice

Telophase is a stage of a cellular process that begins after the chromosomes have moved to opposite of the cell. During which cellular process does telophase occur?

• Translation

• Interphase

• Transciption

• Mitosis

Multiple Choice

The diagram shows cells in different phases of mitosis. A student is looking for evidence that spindle fibers are separating the chromosomes to ensure that each new nucleus has one copy of each chromosome. Which cell is in the phase of mitosis that the student is looking for?

• Cell 1

• Cell 2

• Cell 3

• Cell 4

​Cytokinesis

Once two nuclei have been formed, the cell can divide its cytoplasm and all its organelles, and splits into two new identical daughter cells. This process is known as cytokinesis.

Multiple Choice

Part of the cell cycle is shown in this simplified model. This part of the cell cycle is best described as the process that-

• duplicates the DNA

• synthesizes new molecules

• maintains genetic homeostasis

• completes cell division