Bio 2nd 6-weeks Practice Exam

In which stage of the cell cycle do the nucleus and its contents divide?

• synthesis

• gap 1

• mitosis

• gap 2

During the Gap 1 stage of the cell cycle, a cell -

• splits into two new cells

• carries out its normal functions

• duplicates its DNA

• divides its cytoplasm

Which of the following phrases best describes cytokinesis?

• division of the cytoplasm

• division of the nucleus

• division of DNA

• division of surface area

The process of organizing and condensing DNA into its compact form takes place at the start of -

• interphase

• metaphase

• mitosis

• telophase

During which phase of mitosis do sister chromatids separate from each other?

• prophase

• metaphase

• anaphase

• telophase

Which of the following statements is true of cytokinesis?

• it takes place in plant cells only

• it completes the cell cycle

• it organizes DNA

• it occurs during prophase

Two internal factors that are important in advancing the cell cycle are -

• kinases and cylcins

• hormones and enzymes

• phosphates and enzymes

• proteins and centromeres

Which phrase best describes cancer?

• absence of cyclins

• multiple gene mutations

• uncontrolled cell growth

• presence of genetic defects

Which of the following statements is true for all cells?

• they use solar energy

• they use photosynthesis

• they use ATP

• they use chemosynthesis

Energy is released from an ATP molecule for cellular processes when it -

• has a phosphate removed

• stores an extra phosphate group

• converts a phosphate group to ADP

• produces a sugar molecule