Cell Cycle & DNA

The cell cycle has checkpoints built in to ensure that each cell has met certain criteria before being allowed to move to the next stage

Which statement below correctly identifies what happens prior to the cell being allowed to enter the G2 stage of the cell cycle?

• The cell makes RNA.

• The nucleus divides.

• DNA replication occurs.

• The chromosomes align.

What disorder results when human body cells lose the ability to respond to internal regulatory signals that control cell growth?

• cellulitis

• diabetes

• hemophilia

• cancer

What occurs at G1?

• Chromatin condenses to form chromosomes

• Cleavage of cytoplasm and formation of cell plate

• Period of growth and development between mitotic divisions

• Nuclear membrane, nucleolus, and chromatin fade

What are the stages of the cell cycle in order?

• Metaphase, Interphase, Anaphase, Prophase, Telophase

• Interphase, Anaphase, Metaphase, Prophase, Telophase

• Prophase, Anaphase, Metaphase, Interphase, Telophase

• Interphase, Prophase, Metaphase, Anaphase, Telophase

Which statement best describes the DNA molecules made from this process?

• The new DNA molecules are identical to each other and to the original molecule

• The new DNA molecules are identical to each other but not to the original molecule.

• The new DNA molecules are each identical to only one strand in the original molecule.

• The new DNA molecules are not identical to the original, providing variation in the DNA

What is the purpose of mitosis?

• It guarantees that each daughter cell has half the amount of DNA of parent cells

• It ensures that new nuclei have an exact copy of DNA.

• It ensures the reproduction of mitochondria and chloroplasts

• It prevents the occurrence of cancer cells.

Which of the following correctly identifies the proper nitrogen base pairing in DNA replication?

• A:T; G:C

• T:C; G:A

• T:U; C:G

• A:U; G:C

Which type of molecule is shown below?

• amino acids

• DNA

• protein

• RNA

A student used poster board to construct this model of a section of DNA.

Which statement describes this model of DNA?

• The model is inaccurate because the base pairs are incorrect.

• The model is accurate because it contains correctly paired bases.

• The model is accurate because it shows each base splitting to form a double helix.

• The model is inaccurate because some typical bases in DNA are missing.

Why is the Cell Cycle often represented as a circle?

• Because it is easy to draw

• Because cell cycles has a distinct beginning and end point

• to highlight the checkpoints

• to show that it repeats over and over