cell division

copying dna

DNA stands for deoxyribonucleic acid. It is a very large molecule. It consists of two strands of smaller molecules called nucleotides. Before learning how DNA is copied, its a good idea to review its structure.

chromosomes

As a cell prepares to divide, its DNA first forms one or more structures called chromosomes. A chromosome consists of DNA and protein molecules coiled into a definite shape. Chromosomes are circular in prokaryotes and rodlike in eukaryotes. You can see an example of a human chromosome in Figure below. The rest of the time, DNA looks like a tangled mass of strings. In this form, it would be very difficult to copy and divide.

dna structure

As you can see in Figure 5.1, each nucleotide includes a sugar, a phosphate, and a nitrogen base. The sugar in DNA is called deoxyribose. There are four different nitrogen bases in DNA: adenine (A), thymine (T), cytosine (C), and guanine (G). Chemical bonds between the bases hold the two strands of DNA together. Adenine always bonds with thymine, and cytosine always bonds with guanine. These pairs of bases are called complementary base pairs.

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cell division in prokaryotic and eukaryotic cells

How cell division proceeds depends on whether a cell has a nucleus. Prokaryotic cells lack a nucleus. Their DNA is in the cytoplasm. It forms just one circular chromosome. Eukaryotic cells have a nucleus holding their DNA. Their DNA forms multiple rodlike chromosomes, like the one in Figure 5.2. Eukaryotic cells also have other organelles. For these reasons, cell division is more complex in eukaryotic cells.

dna replication

The process in which DNA is copied is called DNA replication. You can see how it happens in Figure 5.3. An enzyme breaks the bonds between the two DNA strands. Another enzyme pairs new, complementary nucleotides with those in the original chains. Two daughter DNA molecules form. Each contains one new chain and one original chain.

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eukaryotic cell division

Before a eukaryotic cell divides, the nucleus and other organelles must be copied. Only then will each daughter cell have all the needed structures. 1. The first step in eukaryotic cell division, as it is in prokaryotic cell division, is DNA replication. As you can see in Figure 5.5, each chromosome then consists of two identical copies. The two copies are called sister chromatids. They are attached to each other at a point called the centromere. 2. The second step in eukaryotic cell division is division of the cells nucleus. This includes division of the chromosomes. This step is called mitosis. It is a complex process that occurs in four phases. The phases of mitosis are described below. 3. The third step is the division of the rest of the cell. This is called cytokinesis, as it is in a prokaryotic cell. During this step, the cytoplasm divides, and two daughter cells form. These three steps are shown in Figure 5.6.

prokaryotic cell division

You can see how a prokaryotic cell divides in Figure 5.4. This type of cell division is called binary fission. The cell simply splits into two equal halves. Binary fission occurs in bacteria and other prokaryotes. It takes place in three continuous steps: 1. The cells chromosome is copied to form two identical chromosomes. This is DNA replication. 2. The copies of the chromosome separate from each other. They move to opposite poles, or ends, of the cell. This is called chromosome segregation. 3. The cell wall grows toward the center of the cell. The cytoplasm splits apart, and the cell pinches in two. This is called cytokinesis.

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mitosis

Mitosis, or division of the nucleus, occurs only in eukaryotic cells. By the time mitosis occurs, the cells DNA has already replicated. Mitosis occurs in four phases, called prophase, metaphase, anaphase, and telophase. You can see what happens in each phase in Figure below. The phases are described below. You can also learn more about the phases of mitosis by watching this video: . MEDIA Click image to the left or use the URL below. URL: 1. Prophase: Chromosomes form, and the nuclear membrane breaks down. In animal cells, the centrioles near the nucleus move to opposite poles of the cell. Fibers called spindles form between the centrioles. 2. Metaphase: Spindle fibers attach to the centromeres of the sister chromatids. The sister chromatids line up at the center of the cell. 3. Anaphase: Spindle fibers shorten, pulling the sister chromatids toward the opposite poles of the cell. This gives each pole a complete set of chromosomes. 4. Telophase: The chromosomes uncoil, and the spindle fibers break down. New nuclear membranes form.

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the cell cycle

Cell division is just one of the stages that a cell goes through during its lifetime. All of the stages that a cell goes through make up the cell cycle.

prokaryotic cell cycle

The cell cycle of a prokaryotic cell is simple. The cell grows in size, its DNA replicates, and the cell divides.

eukaryotic cell cycle

In eukaryotes, the cell cycle is more complicated. The diagram in Figure 5.7 shows the stages that a eukaryotic cell goes through in its lifetime. There are two main stages: interphase and mitotic phase. They are described below. You can watch a eukaryotic cell going through the phases of the cell cycle at this link: Interphase is longer than mitotic phase. Interphase, in turn, is divided into three phases: Mitotic phase is when the cell divides. It includes mitosis (M) and cytokinesis (C).

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instructional diagrams

description_image

The diagram shows the process of Meiosis of cells. Five stages are involved in the process of Meiosis. Meiosis is a specialized type of cell division that reduces the chromosome number by half. Meiosis begins with a diploid cell, which contains two copies of each chromosome. In meiosis, DNA replication is followed by Pairing and Recombination. After this, the cell goes through two rounds of cell division, called Meiosis I and Meiosis II. These stages produce four potential daughter cells, each with half the number of chromosomes as the original parent cell. During Meiosis II, sister chromatids decouple and the resultant daughter chromosomes are segregated into four daughter cells.

description_image

The diagram is a representation of the cell cycle. The cell cycle consists of four discrete phases: G1, S, G2, and M. The S or synthesis phase is when DNA replication occurs, and the M or mitosis phase is when the cell actually divides. The other two phases G1 and G2, the so-called gap phases are less dramatic but equally important. During G1, the cell conducts a series of checks before entering the S phase. Later, during G2, the cell similarly checks its readiness to proceed to mitosis. Together, the G1, S, and G2 phases make up the period known as interphase. Cells typically spend far more time in interphase than they do in mitosis. Of the four phases, G1 is most variable in terms of duration, although it is often the longest portion of the cell cycle. Mitosis consists of four basic phases: prophase, metaphase, anaphase, and telophase. These phases occur in strict sequential order, and cytokinesis-the process of dividing the cell contents to make two new cells-starts in anaphase or telophase.

description_image

The diagram shows two types of cell division process called mitosis (on the left) and meiosis (on the right). Both types of cell division result in the division of the original cell called the parent cell but the difference is that mitosis a cell splits to create two identical copies of the original cell. In meiosis, cells split to form new cells with half the usual number of chromosomes, to produce gametes for sexual reproduction. The two cell division process share a number of stages e.g. doubling of DNA, assembly in center of cell, separation of chromosomes and finally cell division.

description_image

The diagram shows the different phases of the cell cycle. There are two main phases: the mitotic phase and the interphase. During the interphase, the cell grows and prepares to divide into daughter cells. The interphase has three main sub-phases. The G1 phase, or the first growth phase, is the longest phase. During G1, the cell grows rapidly. In addition to carrying out its basic cell functions, it also copies some of its organelles and creates the proteins it will need to replicate its DNA. The second phase is called the S stage, or the synthesis phase. During this phase, the cell copies its DNA. This is called DNA replication. The third phase is the second growth phase, or the G2 stage. During G2, the cell prepares for mitosis by making more proteins and copying the rest of its organelles. During the mitotic phase, the cell nucleus divides into two. Each new nucleus then becomes its own cell, forming two daughter cells. This process is called mitosis.

description_image

This diagram shows the process of cell division known a mitosis. Mitosis has 5 distinct phases. The interphase is the first phase followed by prophase, metaphase, anaphase and telophase. In the final phase, the Telophase, the cell divides into two new cells.

description_image

The diagram below shows the Eukaryotic cell Cycle. The division cycle of most cells consists of four coordinated processes: cell growth, DNA replication, distribution of the duplicated chromosomes to daughter cells, and cell division. In bacteria, cell growth and DNA replication take place throughout most of the cell cycle, and duplicated chromosomes are distributed to daughter cells in association with the plasma membrane. In eukaryotes, however, the cell cycle is more complex and consists of four discrete phases. Although cell growth is usually a continuous process, DNA is synthesized during only one phase of the cell cycle, and the replicated chromosomes are then distributed to daughter nuclei by a complex series of events preceding cell division. Progression between these stages of the cell cycle is controlled by a conserved regulatory apparatus, which not only coordinates the different events of the cell cycle but also links the cell cycle with extracellular signals that control cell proliferation.

questions

The sugar in DNA is called

a. ribose

-->  b. deoxyribose

c. glucose

d. none of the above

_phase of the cell cycle in which the cytoplasm splits apart and the cell pinches in two

a. telophase

b. prophase

-->  c. cytokinesis

d. interphase

e. mitotic phase

f. metaphase

g. anaphase

_stage of mitosis in which chromosomes form and the nuclear membrane breaks down

a. telophase

-->  b. prophase

c. cytokinesis

d. interphase

e. mitotic phase

f. metaphase

g. anaphase

Which nitrogen base binds with cytosine?

a. adenine

b. thymine

-->  c. guanine

d. uracil

Which organisms have rodlike chromosomes?

a. bacteria

b. archaea

-->  c. protists

d. all of the above

_stage of mitosis in which chromosomes uncoil and spindle fibers break down

-->  a. telophase

b. prophase

c. cytokinesis

d. interphase

e. mitotic phase

f. metaphase

g. anaphase

_phase of the cell cycle in which a eukaryotic cell divides

a. telophase

b. prophase

c. cytokinesis

d. interphase

-->  e. mitotic phase

f. metaphase

g. anaphase

Which statement about sister chromatids is false?

a. They are attached at a point called a centromere

-->  b. They are found in all cells during cell division

c. They form when the DNA in a cell replicates

d. They separate from each other during anaphase

_stage of mitosis in which spindle fibers attach to the centromeres of sister chromatids

a. telophase

b. prophase

c. cytokinesis

d. interphase

e. mitotic phase

-->  f. metaphase

g. anaphase

The two main stages of the cell cycle in a eukaryotic cell are interphase and

a. prophase

b. synthesis phase

c. growth phase

-->  d. mitotic phase

_phase of the cell cycle in which the cell grows, DNA replicates, and the cell prepares to divide

a. telophase

b. prophase

c. cytokinesis

-->  d. interphase

e. mitotic phase

f. metaphase

g. anaphase

_stage of mitosis in which sister chromatids move toward opposite poles of the cell

a. telophase

b. prophase

c. cytokinesis

d. interphase

e. mitotic phase

f. metaphase

-->  g. anaphase

The last phase of mitosis is telophase.

-->  a. true

b. false

Interphase is divided into four phases.

a. true

-->  b. false

The cell cycle of a prokaryotic cell includes mitotic phase.

a. true

-->  b. false

Sister chromatids line up at the center of a cell during metaphase.

-->  a. true

b. false

DNA replication occurs during the second phase of mitosis.

a. true

-->  b. false

___A eukaryotic cell generally spends most of its lifetime in the mitotic phase.

a. true

-->  b. false

___The mitotic phase includes mitosis and cytokinesis.

-->  a. true

b. false

___The cell cycle is more complicated in prokaryotic than eukaryotic cells.

a. true

-->  b. false

___In mitosis, new nuclear membranes form during metaphase.

a. true

-->  b. false

___The first phase of mitosis is anaphase.

a. true

-->  b. false

___Mitosis occurs only in eukaryotic cells.

-->  a. true

b. false

___Sister chromatids are two identical copies of the same chromosome.

-->  a. true

b. false

The smaller, repeating molecules that make up a DNA or RNA molecule are called

a. amino acids.

b. fatty acids.

c. deoxyriboses.

-->  d. nucleotides.

The two strands of DNA are held together by chemical bonds between the

a. sugars.

b. phosphates.

-->  c. nitrogen bases.

d. none of the above

After DNA is copied, each new DNA molecule contains

a. two new strands.

b. two original strands.

-->  c. one new strand and one original strand.

d. two original strands and one new stran

Which organisms have circular chromosomes?

a. plants

b. protists

c. animals

-->  d. none of the above

Which of the following is an example of a complementary base pair in DNA?

a. adenine and guanine

b. cytosine and thymine

c. adenine and cytosine

-->  d. cytosine and guanine

In prokaryotes, cell division occurs by

a. mitosis.

b. mitotic division.

-->  c. binary fission.

d. cell replication.

What is the first step in the division of both prokaryotic and eukaryotic cells?

a. mitosis

b. interphase

c. cytokinesis

-->  d. DNA replication

diagram questions

question_image

What is the haplotype of the cells in letter R?

-->  a. 4N

b. 3N

c. 2N

d. N

question_image

Can you see the mother cell?

-->  a. YES

b. J

c. T

d. F

question_image

Identify Metaphase I.

-->  a. L

b. H

c. U

d. M

question_image

Which label refers to the anaphase?

a. T

b. D

-->  c. U

d. L

question_image

Which label shows the Interphase?

a. X

b. N

-->  c. D

d. U

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Which letter represents prophase?

-->  a. T

b. U

c. X

d. D

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When does the cell actually separate into two separate cells?

-->  a. X

b. L

c. D

d. T

question_image

What is produced by a cell division?

a. Mitochondrion

b. Eggs

c. Three cells

-->  d. Daughter cells

question_image

What is the best description of the cell division as represented in this diagram?

-->  a. binary fission

b. cell duplication

c. cell replication

d. mitosis

question_image

Cell division creates how many daughter cells?

-->  a. 2

b. 1

c. 4

d. 3

question_image

Which phase is shown in the picture below?

-->  a. Mitosis

b. Prophase

c. Interphase

d. Mitotic

question_image

How many daughter cells are thereafter cell division?

a. 3

b. 1

-->  c. 2

d. 4

question_image

What stage occurs after cell division?

a. Son cells are formed

b. Grandmother cells are formed

-->  c. Daughter cells are formed

d. Grandfather cells are formed

question_image

What happens after DNA replication?

a. gametes

b. S-phase

c. diploid cell

-->  d. chromosome segregation

question_image

What comes before cytokinesis?

a. Meiosis

b. DNA replication

-->  c. Chromosome segregation

d. Mitosis

question_image

What happens after DNA replication in binary fission?

a. Cytokinesis

b. Mitosis

c. Meiosis

-->  d. Chromosome segregation

question_image

What is the first stage of binary fission?

a. Chromosome segregation

-->  b. DNA replication

c. Diploid cell

d. S-phase

question_image

In which major stage of cell division do chromosomes duplicate?

a. Diploid

b. Phagocytosis

c. DNA Replication

-->  d. Mitosis

question_image

Mitosis produces what?

a. One diploid cell

-->  b. Two diploid cells

c. One haploid cell

d. Two haploid cells

question_image

How many steps are involved in mitosis?

-->  a. 2

b. 4

c. 3

d. 1

question_image

In how many figures are there identical copies of DNA within 1 cell?

a. 4

-->  b. 3

c. 2

d. 6

question_image

What is cell division called?

a. mitochondria

b. diploid

-->  c. mitosis

d. meiosis

question_image

In meiosis, what comes after 2 daughter cells?

a. mitosis

-->  b. 4 daughter cells

c. DNA replicates

d. parent cell

question_image

What is the result of DNA replicating in Mitosis?

-->  a. 2 Daughter Cells

b. Meiosis

c. 4 Daughter Cells

d. Parent Cell

question_image

How many daughter cells are initially created from the parent cell?

-->  a. 2

b. 4

c. 6

d. 1

question_image

How many daughter cells are represented in mitosis?

-->  a. 2

b. 3

c. 4

d. 1

question_image

How many daughter cells are created after complete meiosis?

a. 16

-->  b. 4

c. 8

d. 2

question_image

What happens when the chromatids separate during mitosis?

a. DNA replicates

-->  b. Chromosomes align

c. 2 Diploid cells are created

d. Chromatids are copied

question_image

During Meiosis, what is produced after meiotic cell division?

a. spindles

b. ATP

-->  c. gametes

d. RNA

question_image

What happens after DNA Replication after Mitotic Cell Division?

a. cell division 2

-->  b. Duplicated chromosomes line up individually on the spindle

c. Pairing of duplicated homologous chromosomes

d. Cell division 1

question_image

How many cells are produced from the second meiotic cell division?

a. 1

b. 2

c. 8

-->  d. 4

question_image

How many steps are listed in Mitotic cell division?

-->  a. 5

b. 6

c. 4

d. 3

question_image

Which stage depicts the start of mitosis?

a. 1

-->  b. 3

c. 5

d. 4

question_image

How many cells does one cell become after mitosis?

a. one

b. six

-->  c. two

d. five

question_image

How many steps come before the final Mitosis step?

a. 4

b. 2

c. 1

-->  d. 3

question_image

What happens if the DNA replication is unsuccessful?

a. Mitosis will still occur and the cell will divide normally.

b. The cell will multiply by other means.

-->  c. Mitosis will not occur and the cell will not divide.

d. The new cells will have no DNA.

question_image

What comes directly after Metaphase II?

-->  a. Anaphase II

b. Telophase II and Cytokinesis

c. None

d. Prophase II

question_image

What happens after Metaphase II?

-->  a. Anaphase II

b. Haploid daughter cells forming

c. Telophase II and Cytokinesis

d. Prophase II

question_image

What happens right before anaphase II?

-->  a. Metaphase II

b. Anaphase I

c. Telophase II

d. Prophase II

question_image

How many phases are represented in this diagram?

-->  a. 8

b. 6

c. 2

d. 5

question_image

How many phases are there in the cell division?

a. 7

b. 5

c. 6

-->  d. 4

question_image

How many parts do you have this diagram?

-->  a. 7

b. 3

c. 2

d. 5

question_image

What phase comes after metaphase?

a. Pro-Metaphase

b. Prophase

-->  c. Anaphase

d. Interphase

question_image

In which phase do the chromatids separate?

-->  a. Anaphase

b. Pro-Metaphase

c. Metaphase

d. Prophase

question_image

How many phases before telophase?

-->  a. 5

b. 4

c. 7

d. 6

question_image

What phase comes after the metaphase?

a. pro-metaphase

b. telophase

-->  c. anaphase

d. prophase

question_image

How many phases are shown in this diagram?

a. 3

b. 5

c. 8

-->  d. 7

question_image

How many phases are there between Interphase and Metaphase?

a. 3

b. 4

-->  c. 2

d. 1

question_image

Describe interphase

a. cells pull apart

b. spindle fibres form

-->  c. centrosomes replicate and move to the poles of the cell

d. spindle fibres pull chromosomes towards the cell poles

question_image

Meiosis 1 splits the cell into how many daughter nuclei?

a. 3

b. 4

-->  c. 2

d. 6

question_image

How many circles are shown in the picture?

a. 6

b. 7

-->  c. 8

d. 9

question_image

How many types of Meiosis are shown in the diagram?

a. 4

b. 3

c. 1

-->  d. 2

question_image

After Meiosis II, how many daughter nuclei are there?

a. 8

-->  b. 4

c. 0

d. 2

question_image

At which phase does the cell split into four?

-->  a. Telophase

b. Telophase 2

c. Prophase

d. Metaphase

question_image

What is the last phase of Meiosis I?

a. Telophase II

b. Prophase I

-->  c. Telophase

d. Anaphase

question_image

How many phases of MEIOSIS I are shown in the diagram?

a. 4

-->  b. 5

c. 6

d. 3

question_image

How many more cells are formed in Meiosis II compared to Meiosis I?

a. 4

-->  b. 2

c. 3

d. 1

question_image

What phase comes after anaphase?

a. Interphase

b. Metaphase

-->  c. Telophase

d. Prophase

question_image

Which phase is when two nuclei reform at poles?

-->  a. Telophase

b. Anaphase

c. Metaphase

d. Prophase

question_image

How many phases are there before cytokinesis?

a. 2

b. 9

c. 7

-->  d. 5

question_image

How many stages are there in DNA replication?

a. 7

b. 5

c. 4

-->  d. 6

question_image

At which phase where chromosomes align with their centrometers on the equator and attach to the spindle?

a. Prophase

-->  b. Metaphase

c. Telophase

d. Anaphase

question_image

In this diagram of cell division, what phase happens after Anaphase?

a. Prophase

b. Metaphase

c. Daughter cells

-->  d. Telophase

question_image

What stage of Mitosis does not contain paternal chromosomes?

a. Naphase

b. Telophase

c. Prophase

-->  d. Interphase

question_image

What comes after metaphase?

-->  a. anaphase

b. prophase

c. interphase

d. telophase

question_image

The parents' DNA material creates a horizontal line in which phase of mitosis?

-->  a. Metaphase

b. Anaphase

c. Telophase

d. Prophase

question_image

How many phases are in Mitosis?

a. 2

b. 1

-->  c. 5

d. 4

question_image

How many phases come before the meta phase in this diagram?

a. 1

b. 4

c. 3

-->  d. 2

question_image

What is the first step in the cell cycle?

-->  a. DNA synthesis

b. Cell division

c. Mitosis

d. Chromosome duplication

question_image

During the cell cycle, after what phase does the chromosome duplication happen?

a. Mitosis

-->  b. DNA synthesis

c. Chromosome separation

d. Cell division

question_image

What process occurs after chromosome separation?

a. Cyclin

b. DNA Synthesis

-->  c. Mitosis

d. Chromosome Duplication

question_image

What happens just before cell divides?

a. two cells are formed

-->  b. chromosome separates

c. dna synthesis

d. chromosome duplicates

question_image

When mitosis is complete, how many chromosomes does a daughter cell contain?

a. 24

b. 25

-->  c. 23

d. 26

question_image

Which letter represents the Synthesis phase?

a. M

b. G1

-->  c. S

d. G2

question_image

How many stages are there in the cell cycle?

a. 5

-->  b. 4

c. 6

d. 7

question_image

The cell cycle is made up of how many phases?

a. 2

b. 5

-->  c. 4

d. 3

question_image

How many phases of the cell cycle are there?

a. 2

b. 1

c. 3

-->  d. 4

question_image

The eukaryotic cell spends most time in which of the following phases?

a. S (Synthesis phase)

b. G2 (Growth phase 2)

-->  c. G1 (Growth Phase 1)

d. M (Mitotic phase)

question_image

What comes directly after first gap?

a. Second gap

-->  b. Deoxyribonucleic acid (DNA) synthesis phase (S)

c. Mitotic phase (M)

d. Interphase

question_image

Which phase is S a label for?

-->  a. Synthesis

b. Cycle start

c. Growth phase 2

d. Growth phase 1

question_image

In which phase do the sister chromatids line up at the center of the cell?

a. Anaphase

b. Prophase

-->  c. Metaphase

d. Telophase

question_image

Which phase in the cell cycle comes after the metaphase?

-->  a. anaphase

b. interphase s

c. prophase

d. telophase

question_image

What happens after metaphase?

-->  a. Anaphase

b. Interphase

c. Telophase

d. Prophase

question_image

What phase occurs after the Synthesis phase (S)?

a. Mitotic phase (M)

b. Growth phase 1 (G1)

c. Resting (G0)

-->  d. Growth phase 2 (G2)

question_image

What does the label S refer to in the diagram?

a. Mitotic phase

b. Cytokinesis

-->  c. Interphase

d. DNA synthesis

question_image

What does the mitotic phase result in?

a. Telophase

b. DNA synthesis

-->  c. Formation of 2 daughter cells

d. Interphase

question_image

Which label shows a process of dividing a prokaryotic cell into two daughter cells?

a. Cytokinesis

b. Mitosis

-->  c. Mitotic Phase

d. Interphase

question_image

What is the S Phase?

a. Nuclear Division

b. Cytoplasmic Division

c. G2 Phase

-->  d. DNA Replication

question_image

What phase comes after the G2 phase?

a. G1 Phase

-->  b. M Phase

c. S Phase

d. G Phase

question_image

Which phase comes after the M phase?

a. S Phase

b. Mitosis

c. G2 Phase

-->  d. G1 Phase

question_image

How many types of phases are shown in the diagram?

a. 8

-->  b. 5

c. 3

d. 1

question_image

What does the M Phase consist of?

a. G2 Phase

b. S Phase

c. Interphase

-->  d. mitosis (nuclear division) and cytokinesis (cytoplasmic division)

question_image

At what phase does the cell prepare to divide by creating more proteins and copying the rest of its organelles?

a. M

-->  b. G2

c. S

d. G1

question_image

Which step is a result of the DNA synthesis?

a. E

-->  b. G2

c. G1

d. D

question_image

Put the three control mechanisms that evaluate the condition of the genetic information in correct order.

a. DNA Synthesis - Cell Growth - Mitosis

b. Cyclin D CDK4 - Cyclin E CDK2 - Cyclin A CDK2

-->  c. G1 Checkpoint - G2 Checkpoint - M checkpoint

d. S - G2 Checkpoint - M checkpoint

question_image

How many stages does the diagram have?

a. 3

b. 4

c. 2

-->  d. 5

question_image

At what stage does the DNA replication occur?

-->  a. interphase

b. G1

c. mitosis

d. G2

question_image

If a cell has gone through the interphase state, what will happen next?

a. Cytokinesis

b. Growth

c. DNA Replication

-->  d. Mitosis

question_image

Which phase is the label M for?

a. Growth

b. Synthesis

c. Resting

-->  d. Mitotic

question_image

Identify the letter that indicates the phase in which all preparations to mitosis are done.

a. G1

b. S

-->  c. I

d. M

question_image

What do the yellow circles in this diagram represent?

a. Interphase

-->  b. Formation of 2 daughter cells

c. DNA synthesis

d. Anaphase

question_image

Which phase comes after S phase?

a. M

b. G1

-->  c. G2

d. G0

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Which section represents the DNA synthesis phase?

a. M

-->  b. S

c. G1

d. G2

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What is the stage after mitosis and before DNA synthesis?

a. G2

-->  b. G1

c. M

d. S

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In this diagram of cell division, what occurs after G2 or Growth and Preparation for Mitosis?

a. G1

b. DNA Synthesis

-->  c. Mitosis

d. Growth

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What is phase 1?

a. synthesis phase

b. DNA replication

-->  c. cell growth

d. mitosis

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What is the main process in the G1 phase?

a. Mitosis

b. Spindle Assembly

c. DNA Replication

-->  d. Cell Growth

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What phase is between Gap Phase 1 and 2?

-->  a. Synthesis Phase

b. Cell Growth

c. DNA replication

d. Mitosis

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How many gap phases does the cell division cycle have?

a. 4

-->  b. 2

c. 3

d. 1

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What happens in the first phase of the cell cycle?

a. Replicated chromosomes are separated into two new nuclei.

-->  b. The cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis.

c. It goes to a period of rapid cell growth and protein synthesis during which the cell readies itself for mitosis.

d. DNA is replicated.

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What occurs after mitosis?

a. Synthesis phase

b. Gap phase 2

c. DNA damage

-->  d. Gap phase 1

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Which interphase is when the cell double checks the duplicated chromosomes for error?

a. G1

-->  b. G2

c. S

d. Mitosis

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What is the stage right after cytokinesis?

a. S

b. Mitosis

-->  c. G1

d. G2

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How many processes are there in the interphase?

a. 2

-->  b. 6

c. 4

d. 3

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How many stages exist in the eukaryotic cycle?

-->  a. 2

b. 5

c. 4

d. 8

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How many phases are there to get to mitotic?

-->  a. 3

b. 9

c. 2

d. 7

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What does S represent in this chart?

a. Cytokinesis

b. growth

-->  c. DNA replicates

d. mitosis