WorksheetsMeiosis and Mitosis
Total questions: 88
Worksheet time: 1hrs 16mins
Which of the following are examples of gametes?
sperm
chromatid
egg
skin cell
We tend to count chromosomes by the number of (a) present?
Two new cells are form in
(a)
Strands of replicated chromosome is known as _
(a)
Which statement is true about meiosis?
Meiosis is responsible for growth and for repair or to replace worn out cells
Meiosis makes sperm and egg cells
Meiosis makes identical body cells
Meiosis makes skin cells and stomach cells
What happens during interphase?
it's when the cell is growing
it's when the cell is replicating its DNA
it's carrying out cell processes
it's involve is cell division
Chromatids are getting pulled away by the spindle fibers in
(a)
Meiosis is a process that contributes to ______ ______.
(a)
Meiosis is what we call a (a) division.
Chromosomes are made of ____?
proteins
nucleic acids
fatty acids
DNA
Which phase of meiosis do homologous chromosomes line up in the middle?
(a)
Human sperm cells and egg cells have (a) chromosomes.
What happens during Prophase I?
cytokinesis generates 2 daughter cells
chromosomes line up
chromosomes condense & thicken
homologous chromosomes pairs up
crossing over occurs
The word (a) means that the chromosomes are approximately the same size and that they contain the same types of genes in the same locations
During meiosis, the process of cell division results in
two haploid daughter cells
two haploid daughter cells
two diploid daughter cells
four haploid daughter cells
Each body cell of a fly contains 8 chromosomes. How many chromosomes would normally be present in a gamete produced by this fly?
(a)
Cells undergo a round of DNA replication, forming duplicate chromosomes during
(a)
Which of the following are ways to describe a diploid cell?
2N
gamete
contains two sets of homologous chromosomes
contains a single set of homologous chromosomes
Which phase of meiosis does crossing-over occur?
(a)
Which of the following sequences represents chromosome number during fertilization?
N --> N
N + N --> 2N
2N --> N + N
2N --> 2N
A dog’s sperm cell contains 39 chromosomes. What is the total number of chromosomes normally present in a stomach cell of this dog?
(a)
Which statements are true about meiosis?
After meiosis II, the four daughter cells contain the diploid number of chromosomes.
The two daughter cells produced by meiosis I still have the two complete sets of chromosomes as a diploid cell does.
During meiosis I, homologous chromosomes separate.
During anaphase II, the paired chromatids separate.
What holds the sister chromatids together?
(a)
After one division of the nucleus, a new spindle forms around each group of chromosomes.
(a)
The pairs of homologous chromosomes are moved by the spindle to the equator of the cell. The homologous chromosomes, each made up of two chromatids, remain together.
(a)
The chromosomes condense, and the nuclear envelope breaks down. Homologous chromosomes pair all along their length and then cross over.
(a)
The homologous chromosomes separate. The chromosomes of each pair are pulled to opposite poles of the cell by the spindle fibers. The chromatids do not separate at their centromeres
(a)
A nuclear envelope forms around each set of chromosomes. Two cells undergo cytokinesis, forming haploid offspring cells.
(a)
Individual chromosomes line up along the equator, attached at their centromeres to spindle fibers.
(a)
The centromeres divide, and the chromatids move to opposite poles of the cell.
(a)
Individual chromosomes gather at each of the two poles. In most organisms, the cytoplasm divides, forming two new cells.
(a)
The process of cell division results in
(a)
True or False: As a cell increases in size, it usually makes extra copies of its DNA.
(a)
What determines the rate at which food and oxygen in a cell are used up and waste products produced
the cell's organelles
the cell's volume
the cell's location
the cell's DNA
What are two reasons why cells divide rather than continue to grow indefinitely?
The larger a cell becomes, the more demands the cell places on its DNA.
The larger a cell becomes, the more trouble the cell has moving nutrients and wastes across the cell membrane.
The larger a cell becomes, it forces the cell to expel half of its genetic information.
The larger a cell becomes, it causes the cell to become more vulnerable to mutations.
What happens to a cell's ratio of surface area to volume as the cell's volume increases more rapidly than its surface area?
The ratio decreases
The ratio remains the same
The ratio disappears
The ratio increases
True or False: As a cell grows in size, its volume increases much more rapidly than its surface area
(a)
The rate at which materials enter and leave through the cell membrane depends on the cell's
(a)
Produces 2 new cells that are both genetically identical to the original cell is known as
(a)
How is mitosis in plant cells different from mitosis in animal cells?
Plant cells have rigid cell walls and no centrioles
Plant cells don't undergo mitosis
Plant cell mitosis is much slower
Plant cell mitosis is much faster
When do spindle fibers first become visible?
(a)
How does the number of chromosomes in a daughter cell compare to the number of chromosomes in a parent cell?
The daughter cell has one-half the number of chromosomes
The daughter cell has twice the number of chromosomes
The daughter cell has the exact same number of chromosomes
The daughter cell has one-quarter the number of chromosomes
How does your body grow as you get older?
Your cells fill with water, and get bigger.
Your cells divide, producing new cells.
Your cells elongate.
Your cells combine with one another.
Mitosis begins in which cell organelle?
(a)
What happens at the very end of mitosis?
The cell membrane splits.
The nucleus splits again.
Sister chromatids are attached to each other at an area called th
(a)
The period of growth in between cell divisions is called (a)
A strand of a replicated chromosome is known as
(a)
The division of a cell's cytoplasm is called (a)
If a cell has 12 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
(a)
The phase of mitosis during which nuclear membrane reforms and generates two daughter cells
(a)
What is the purpose of mitosis?
Wound healing – Replacement of damaged/dead cells.
Asexual reproduction
Increase number of somatic (body) cells
Produce gamete cells
Sexual reproduction
In which phase does DNA replication occurs as chromosomes duplicate
(a)
The phase of mitosis during which sister chromatids separate
(a)
In which phase does the cell grows, doubles its organelles, and accumulates materials for DNA synthesis?
(a)
The phase of mitosis during which chromosomes become visible and the centrioles separate from one another is
(a)
What is the correct sequence of mitosis?
2N --> N
N --> N
2N --> 2N
Interphase is divided into what phases?
G1
S
M
G2
Which statements about G0 are true?
Some cells go here temporarily if there's not enough resources around.
Neurons stay in G0 permanently.
It is a resting phase.
Spinal cord may stay in G0 temporarily.
Cells here are still performing cell functions but they are not preparing to divide.
Which statements about the cell cycle are true?
M phase includes meiosis and the actual splitting of the cytoplasm, cytokinesis.
Hair follicle cells do mitosis frequently
During interphase: cells grow, replicate their DNA, or doing their cell functions
Many cancer drugs may also target hair follicle cells because many cancer drugs go after cells that do cell division frequently.
Most of the time, cells are not dividing.
Some cancer cells have the ability to secrete their own ____ _____ that makes blood vessels divert over to those cancer cells and supply the cancer cells with nutrients, which can take nutrients away from healthy cells.
growth hormones
poo
monke
Which statements are true?
A multicellular organism grows by making more cells
According to the cell theory: All living things are made of cells
A multicellular organism grows because each individual cell is getting bigger.
Body tissues work together as part of an organ.
Which statements about negative regulators are true?
They make things stop in the cycle.
They allow moving forward in the cycle.
p53 can be involved in initiating apoptosis.
Cyclin is specifically an enzyme protein called kinase.
p53 is a protein involved in negative regulation.
Which statements about cancer are true?
Cancer cells are not able to communicate with other healthy cells.
Cancer cells are able to carry out normal cell functions.
Cancer cells may not securely anchor themselves like other cells which can make them more likely to travel somewhere else.
Cancer cells are uncontrolled.
Which statements about positive regulators are true?
Cyclin is specifically an enzyme protein called kinase.
Typically each cell cycle phase will tend to have different cyclin binding with the Cdk.
Cyclin is protein involved in positive regulation.
They allow moving forward in the cycle.
Cdk is protein involved in positive regulation.
Which of the following can be risk factors for some cells to become cancerous?
radiation
exposure to toxins
genetic links
excessive exposure to UV light
(a) ensures that a cell that is damaged beyond repair will not go on to divide. This damaged cell will self destruct.
Which statements about checkpoints are true?
There are 3 checkpoints in the cell cycle: There is one checkpoint in the G1, S, and G2 only
G1 checkpoint checks: "is the cell growing well enough?" "Is the DNA damage?" "Does the cell have the resources it needs if it were to keep moving on?"
M checkpoint checks: Checks the stage metaphase to make sure the chromosomes are lined up in the middle correctly.
If the reason the cell can't go past the checkpoint is a reason that can be fixed, the cell may kind of pause here until it can fix the issue.
Proteins that respond to events inside the cell are called ____ ______.
(a)
What are two treatments for patients with cancer?
radiation
chemotherapy
PET SCAN
MRI
Uncontrolled cell division occurs in
cancer
meiosis
mitosis
apoptosis
The timing of the cell cycle in eukaryotic cells is believed to be controlled by a group of closely related proteins known as
(a)
Which statements are true about external regulators?
They direct cells to speed up or slow down the cell cycle.
They include growth factors.
They prevent the cell from entering anaphase until all its chromosomes are attached to the mitotic spindle.
They prevent excessive cell growth and keep the tissues of the body from disrupting each other.
Which of the following is a factor that can stop normal cells from growing?
growth factors
contact with other cells
a cut in the skin
cyclin that has been taken from a cell in mitosis
In the cell cycle, external regulators direct cells to
remain unchanged
speed up or slow down the cell cycle
proceed and then stop the cell cycle
grow uncontrollably
What affects cell division in mitosis?
Crossing over
Chemical growth factors
Cell Density
Cytokinesis
Sister chromatids separate from each other.
(a)
Spindle fibers pull apart homologous chromosomes.
(a)
Chromosomes line up in the center of the cell.
(a)
Spindle fibers attach to the homologous chromosomes to the center of the cell.
(a)
Crossing-over occurs.
(a)
Individual chromatids move to each end of the cell.
(a)
How many chromosomes would a cell have during metaphase I of meiosis if it has 12 chromosomes during interphase?
(a)
Two haploid (N) daughter cells form.
(a)
Four haploid (N) daughter cells form.
(a)
Cells undergo a round of DNA replication.
(a)
If a cell has 10 chromosomes at metaphase of mitosis, how many chromosomes will it have during anaphase?
(a)
Gorillas have 48 chromosomes per cell. How many chromatids are present at the end of interphase.
(a)
