Core Questions
Cell Reproduction
1. Using the above diagram, which event most
likely occurs next in the cell cycle
A. The chromatin condenses
B. The nuclear envelope dissolves
C. The chromosomes double in number
D. The cell membrane pinches inward to divide
the cytoplasm
D. The cell membrane pinches inward to divide
the cytoplasm
2. Mitosis and meiosis are processes by which
animal and plant cells divide. Which statement
best describes a difference between mitosis and
meiosis?
A. Meiosis is a multi step process
B. Mitosis occurs only in eukaryotic cells
C. Meiosis is used in the repair of an organism
D. Mitosis produces genetically identical
daughter cells
D. Mitosis produces genetically identical
daughter cells
3. What might happen if cytokinesis was omitted
from the cell cycle
A. The daughter cells would die
B. The cell would lose its mitochondria
C. The daughter cells would not have nuclei
D. The cell would not divide into two daughter
cell
D. The cell would not divide into two daughter
cell
4. If the total number of chromosomes in a cell is 6,
then after mitosis there will be
A. 6 chromosomes in each daughter cell
B. 3 chromosomes in each daughter cell
C. 12 chromosomes in each daughter cell
D. 2 chromosomes in each daughter cell, one
from each parent
A. 6 chromosomes in each daughter cell
5. If the total number of chromosomes in a cell is 6,
then after meiosis there will be
A. 6 chromosomes in each daughter cell
B. 3 chromosomes in each daughter cell
C. 12 chromosomes in each daughter cell
D. 2 chromosomes in each daughter cell, one
from each parent
B. 3 chromosomes in each daughter cell
6. In meiotic cell division, which phase is not
repeated
A. Interphase
B. Prophase
C. Metaphase
D. Cytokinesis
A. Interphase
7. Using 3 of the boxes on the diagram above
correctly label fertilization, meiosis and mitosis.
Mitosis
Meiosis
Meiosis
Mitosis
Fertilization
8. Which of the following increases genetic
variation during meiosis?
A. Spindle fiber formation
B. Crossing over
C. Condensing of chromatin into chromosomes
D. Centromere formation
B. Crossing over
9. In terms of chromosome number why is
meiosis (instead of mitosis) used to produce
gametes?
Meiosis reduces the chromosome number by
half so that each gamete is haploid (n) in terms
of chromosome number. Thus, when
fertilization occurs the resulting zygote will have
the correct diploid (2n) number of
chromosomes.
10. Contrast cytokinesis in animal and plant cells.
Animal Cells – cleavage furrow, flexible
membrane, cells completely split
Plant Cells – cell plate, rigid cell wall, cells
remain connected