stages of mitosis I
organelles & structures in mitosis
cell division general
stages of mitosis II
checkpoints & cancer
100
DNA synthesis occurs during which phase of the cell cycle?
1. G1
2. S
3. G2
4. M
5. cytokinesis
2. S
100
Which of the following is NOT found in plant cells?
1. microtubules
2. cleavage furrow
3. mitotic spindle
4. Cell plate
5. Golgi vesicles
2. cleavage furrow
100
If a cell has 24 chromosomes, how many chromosomes does each daughter cell have at the end of mitosis?
12
48
6
24
The number will vary each
24
100
Which one of the following events occurs during interphase of the human cell cycle?
1. the nuclear envelope comes apart
2. the DNA is replicated
3. the spindle fibers attach to the kinetochores of the chromatids
4. sister chromatids separate and move toward
2. the DNA is replicated
100
The cell can fail to pass the G1 checkpoint for all of the following reasons EXCEPT:
1. DNA damage is detected.
2. There are not enough nutrients in the cell to complete cell division
3. the chromosomes are not all properly attached to the spindle
4. There are not enough energy reserves in the cell to complete mitosis.
3. the chromosomes are not all properly attached to the spindle
200
Where does the checkpoint for chromosome spindle attachment occur in the cell cycle?
1. at metaphase
2. At anaphase
3. At G1
4. At S phase
5. after telophase
1. at metaphase
200
Which cell organelles are responsible to help separate the sister chromatids by attaching spindle fibers to them?
1. chloroplasts
2. centrioles
3. lysosomes
4. ribosomes
2. centrioles
200
How many and what type of cells are produced by mitosis?
1. 2 cells, one genetically different and one identical to the parent cell
2. 2 genetically different cells from the parent cell
3. 4 genetically similar cells to the parent cell
4. 2 cells, both identical to the parent cell
4. 2 cells, both identical to the parent cell
200
Which of the following occurs during anaphase of mitosis?
1. formation of spindle fibers
2. crossing over of segments of homologous chromosomes
3. separation of homologous chromosomes
4. the nuclear envelope dissolves
5. separation of sister chromatids
5. separation of sister chromatids
200
The term for programmed cell death is:
1. S phase
2. apoptosis
3. oxidative phosphorylation
4. metaphase
2. apoptosis
300
In which stage of the life of a cell is the nucleus (DNA Chromatin) always visible?
1. telophase
2. anaphase
3. interphase
4. metaphase
3. interphase
300
What is a kinetochore?
1. a protein complex located at the centromere region
2. a lipid bilayer at the cell plate in plant cells
3. one half of a chromosome after DNA replication
4. a spindle made out of tubulin
1. a protein complex located at the centromere region
300
Mitosis occurs in many different types of cells. For example, the process of mitosis results in the production of:
1. gametes in birds
2. Reproductive spores in ferns
3. two genetically different cells from one bone cell
4. prokaryotic bacteria daughter cells
5. two identical skin cells from 1 skin cell
5. two identical skin cells from 1 skin cell
300
Which stage of the cell cycle is shown below?
1. telophase
2. anaphase
3. metaphase
4. cytokinesis
1. telophase
300
Which of the following is a true statement regarding cancer?
1. It is a disease that is unrelated to mitosis.
2. It is the collective name for many diseases all caused by uncontrolled cell growth.
3. No one knows for sure what cancer is.
4. It is a cellular disease caused by a malfunction
2. It is the collective name for many diseases all caused by uncontrolled cell growth.
400
Motor proteins perform what function during mitosis?
1. They surround pieces of the Golgi apparatus
2. They double the size of the chromosomes
3. They help the chromatids move to opposite poles of the cell, along the spindle.
4. They form the center of the chromosome where the spindle attaches.
3. They help the chromatids move to opposite poles of the cell, along the spindle.
400
Single celled eukaryotes, like amoeba, reproduce by: (more than one answer)
1. binary fission
2. mitosis
3. meiosis
4. fermentation
5. asexual reproduction
2. mitosis,
5. asexual reproduction
400
Which phase of the cell cycle is shown below?
1. telophase
2. anaphase
3. metaphase
4. cytokinesis
3. metaphase
400
The type of gene that codes for positive cell-cycle regulation that may become cancer-causing if they become mutated is a:
1. ATP synthase gene
2. proto-oncongene
3. tumor suppressor gene
4. ribonucleic acid
5. proto-kinase
2. proto-oncongene
500
The class of proteins found in bacteria that are structurally and functionally oddly very similar to tubulin in eukaryotes is known as:
1. ATP synthase
2. kinesin proteins
3. abc proteins
4. FtsZ proteins
4. FtsZ proteins
500
The process whereby prokaryotes such as bacteria replicate, is a simpler process than mitosis. It is known as:
1. catabolic metabolism
2. monomer fission
3. binary fission
4. binary fusion
3. binary fission
500
Which stage of the cell cycle are most of our cells in at any given time?
1. interphase
2. telophase
3. metaphase
4. anaphase
1. interphase
500
The type of gene that codes for negative cell-cycle regulation that may cause cancer if mutated, is called a:
1. tumor suppressor gene
2. proto-oncogene
3. tumor aggressor gene
4. ATP synthase gene
1. tumor suppressor gene
600
A plasmid is:
1. a gene that codes for the kinetochore
2. a replicate of a human chromosome
3. a small loop of DNA
4. the genome of a bacterium
3. a small loop of DNA