Cell Cycle Quizzes

If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage.Which occurs just before G2 stage?

• the nuclear membrane disintegrates
• DNA replicates
• centrioles form
• nucleolus divides

The diagram shows mitosis. Which description best describes what this is trying to convey?

• Cell B contains the information that A and C have.
• Cell C has DNA that is 50% identical to B
• Cell A has DNA that is 75% identical to B
• All cells have different genetic information.

What is the correct sequence for mitosis in the diagram?

• A, B, D, C
• C, A, D, B
• B, A, D, C
• D, C, B, A

The typical growth period of a cell occurs during which stage of the cell cycle?

• G1
• interphase
• synthesis
• mitosis

During which phase in the cell cycle does mitosis happen?

• G_{1 phase}
• G₂ phase
• M phase
• S phase

Cell differentiation is an important process in embryonic development because

• genes are regulated for structure and function
• it allows cells to grow and divide
• mutations are found that could lead to diseases or  birth defects
• ATP production is inhibited

The embryonic cells become specialized for a variety of functions.  Which of these statements best describes how different cell types devleop?

• Each cell type contains active DNA for that cell  type
• Each cell type has only one chromosome of DNA
• Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes, leading to a variety of cells.
• each cell has multiple copies of DNA that are affected in different ways by the environment to change the function of the cell at regular intervals

How can a person’s muscle cells have the same exact DNA sequences as their nerve cells even thought they look and perform completely different?

• The teo different cells become mutated.
• The proteins expressed in each cell are different.
• They actually have different DNA in the two types of cells.
• The genome of the different cells changes.

Although the genes found within the stem cells are the same, stem cells differentiate into unique cell types (ex. muscle cells, nerve cells, skin cells etc.) due to

• random segregation
• meiotic division and fertilization
• mutations in their genetic code
• different patterns in their gene expression

Through what process do cells become specialized so they can perform specific functions within organisms?

• binary fission
• fertilization
• mitosis
• defferentiation