Which of the following statements about the cell cycle is correct?
A. The cell cycle is a sequence of replications and divisions that produces a new cells.
B. The phases of the cell cycle are G1, S, and M phases.
C. In actively dividing cells, the S and G2 phases are collectively known as interphase.
D. When the S phase of the cell cycle is finished, a cell has twice as many chromatids as the number of chromosomes in the G1 phase.
E. During G2 phase, the cell grows and copies its chromosomes in preparation for cell division.
D. When the S phase of the cell cycle is finished, a cell has twice as many chromatids as the number of chromosomes in the G1 phase.
You might also like to view...
In sickle cell anemia, the defective hemoglobin differs from the normal hemoglobin by
A. the color of the pigment. B. the size of the molecule. C. a single amino acid substitution. D. the total number of amino acids. E. the type of blood cell it is found in.
The Ti plasmid is used as a vector to transfer DNA into
A. viruses. B. bacteria. C. plant cells. D. animal cells.
All protists are unicellular organisms
Indicate whether the statement is true or false
Answer the following questions true (T) or false (F)
1. Human herpesvirus 4 is better known as cytomegalovirus. 2. Both bubonic and pneumonic plague cause the formation of buboes and tissue necrosis of the extremities. 3. Cytomegalovirus may be latent for years and reactivate when immunosuppression occurs.