Which Stage Is The Fastest In The Cell Cycle?

For the characteristic cell cycle time of 20 hours in a HeLa cell, almost half is devoted to G1 (BNID 108483) and close to another half is S phase (BNID 108485) whereas

G2 and M

are much faster at about 2-3 hours and 1 hour, respectively (BNID 109225, 109226). The stage most variable in duration is G1.

Which phase of cell cycle is the shortest?

• The mitotic phase is usually the shortest part of any cell cycle. …
• Throughout mitosis, certain checkpoints are essential to the continuation of the process. …
• There are three main checkpoints in mitosis, and those include the G1/S checkpoint, G2/M, and metaphase/ anaphase checkpoint.

What are the 4 stages of cell cycle?

In eukaryotes, the cell cycle consists of four discrete phases:

G

₁

, S, G

₂

, 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 — G

₁

and G

₂

, the so-called gap phases — are less dramatic but equally important.

Which stage of the cell cycle is the longest?

Interphase

is the longest part of the cell cycle. This is when the cell grows and copies its DNA before moving into mitosis. During mitosis, chromosomes will align, separate, and move into new daughter cells. The prefix inter- means between, so interphase takes place between one mitotic (M) phase and the next.

What is the shortest stage Why?

Anaphase is considered the shortest stage of the cell cycle because

this stage involves only the separation of sister chromatids and their migration

…

Which phase of the cell cycle is the longest and shortest?

What is the longest and shortest stage of the cell cycle?

Interphase is usually longest, followed by prophase and telophase; metaphase/anaphase is usually shortest

.

Why is interphase the longest?

Interphase is the longest phase because

the cell has to grow throughout, duplicate DNA, and prepare to go through mitosis

. The result of uncontrolled cell growth.

Which of the following is shortest phase?

The correct answer to this question is option (b)

anaphase

.

What happens in G2 phase?

During the G2 phase,

extra protein is often synthesized, and the organelles multiply until there are enough for two cells

. Other cell materials such as lipids for the membrane may also be produced. With all this activity, the cell often grows substantially during G2.

What are the 3 stages of cell cycle?

The cell cycle is composed of 3 main stages –

interphase, mitosis and cytokinesis

. During the interphase stage of the cell cycle, the cell grows and organelles such as mitochondria and ribosomes double.

What is G1 and G2 phase?

G1 phase is the first phase of the interphase of the cell cycle in which cell shows a growth by synthesizing proteins and other molecules. G2 phase is the third phase of interphase of the cell cycle in which cell prepares for nuclear division by making necessary proteins and other components.

What happens G1?

In G1

_,


cells accomplish most of their growth; they get bigger in size and make proteins and organelles needed for normal functions of DNA synthesis

. Here, proteins and RNAs are synthesized, and, more especially the centromere and the other components of the centrosomes are made.

Why is metaphase the shortest phase?

It takes 4% about the time to complete the cell cycle.

Centromeres are splitting and chromatids are separating. And then chromatids are moving to opposite poles

. This phase spends 0.8% is the cell cycle , hence is the shortest cycle.

What is the longest stage of the cell cycle called quizlet?

Interphase

is the longest phase of the cell cycle, involving growth, development, and repair, but not including cell division. Cytokinesis, the division of cytoplasm, occurs immediately after mitosis.

How long is metaphase?

From the frequency of mitotic phases, defined as indicated in the preceding article (El-Alfy & Leblond, 1987) and corrected for the probability of their occurrence, it was estimated that prophase lasted 4.8 hr; metaphase,

0.2 hr

; anaphase, 0.06 hr and telophase, 3.3 hr, while the interphase lasted 5.4 hr.

Is Interphase the shortest stage of the cell cycle?

In concern to the above question, The correct answer is option D. Note:

The shortest phase of the cell cycle is the Mitotic phase (M phase)

and the longest phase of the cell cycle is G-1 phase.

Is metaphase the longest stage of mitosis?

Also, it is divided into an early and late stage. So clearly,

the longest phase of the Mitosis is Prophase

. Hence, the correct answer is option (A).

Which is the longest phase in meiosis?

• Leptotene.
• Zygotene.
• Pachytene.
• Diplotene and.
• Diakinesis.

Why is prophase the longest stage?

The stage of mitosis that takes the most extended amount of time to complete is prophase.

Most of the cellular processes and activities take place in this phase

. Prophase is also segregated into early and late phases. And for this reason, this stage takes much more time to complete than another stage.

Why is the anaphase the shortest phase?

Why is anaphase the shortest stage?

The kinetochore microtubules shorten as the chromatids are pulled toward opposite poles, while the polar microtubules subsequently elongate to assist in the separation

. Anaphase typically is a rapid process that lasts only a few minutes, making it the shortest stage in mitosis.

Why does telophase take the shortest?

Each half of the chromosome moves away from its previously adjoining half as the spindle fibers pull them towards opposite ends of the cell

. These separated sister chromatids are referred to as daughter chromosomes. Now the cell is ready to enter telophase. This is the shortest and final phase of mitosis.

Which is the longest and shortest phase in meiosis?

–

Prophase I is the longest stage of meiosis I

. -During metaphase I, the chromosomes are aligned at the centre of the cell and are ready to be divided. -In meiosis, two sequential cell divisions occur but the DNA is replicated only once.

Which is the largest & shortest phase in meiosis?

Hint: The shortest phase is a part of Meiosis I in cell division. It involves the separation of homologous chromosomes, which start moving towards the opposite poles after they are aligned at the equator. Complete answer:The shortest phase of mitosis is

Anaphase I

.

Which is the longest phase of interphase?

The

synthesis phase

of interphase takes the longest because of the complexity of the genetic material being duplicated.