1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Tems11 [23]
3 years ago
7

20. In eukaryotic cells, the timing of the cell cycle is regulated by (1 point) centrioles. cyclins. spindle fibers. the nuclear

envelope. spindle fibers
Biology
2 answers:
BigorU [14]3 years ago
7 0

Cyclins regulates the timing of the cell cycle in eukaryotic cells.

Further Explanation:

The cell cycle refers to an ordered flow of events which includes cell growth as well as cellular division. This cycle produces 2 new daughter cells. The cycle starts with interphase in this the cell mature and replicates its own DNA or deoxyribonucleic acid. The interphase begins with:

  • G1 phase: This is the primary growth phase provide nutrient to the cell.
  • S phase or synthesis of DNA: During this phase, the replication of DNA takes place. The centrosome is divide and forms mitotic spindle during the mitosis phase.  
  • G2 or second gap: during this phase, the cell mainly replenishes its energy stores as well as synthesizes the proteins which are required for the chromosome manipulation.

The second stage of a cell cycle is the mitosis or M phase. Chromosomal abnormalities can occur during metaphase of meiosis. Mitotic phase refers to a multiphase process in this the chromosomes are aligned, segregated, and moved into the two new daughter cells which are identical to each other.

The cell cycle mainly is positively regulated by cyclin or cyclin dependent kinase. Cyclin are of different types such cyclin D, E, A, B. The timing of the cell cycle is related to the cyclin and CDK levels. The cyclin levels depends on the phase in which the cell is present. One type of cyclin degrades as the cell moves to the successive phases.

Learn more:

  1. Learn more about mitosis  <u>brainly.com/question/6462270 </u>
  2. Learn more about the menstrual cycle  <u>brainly.com/question/723944 </u>
  3. Learn more about meiosis <u>brainly.com/question/94813 </u>

Answer Details:

Grade: High School

Subject: Biology

Chapter: Cell Cycle

Keywords:

Mitosis, meiosis, cell division, anaphase, telophase, cytokinesis, prophase, metaphase, segregation, chromosome, cyclin, timing, cell cycle.

PtichkaEL [24]3 years ago
6 0
I think the correct answer from the choices listed above is the second option. In eukaryotic cells, the timing of the cell cycle is regulated by cyclins. They <span>are a family of proteins that control the progression of cells through the cell cycle by activating </span>cyclin<span>-dependent kinase (Cdk) enzymes.</span>
You might be interested in
For which of these is DNA ultimately responsible?
Citrus2011 [14]
Both a and b because brown hair is a trait passed down and the word “inherited” lets us know someone else in the family has had the disease before
8 0
3 years ago
What is the rule of the law​
stealth61 [152]

Answer:

<h2>Rule of Law </h2>

is a Political Ideology

It stands for all human being equality and give justice to the abused. This states that a person is independent, and have rights.

8 0
3 years ago
Based on the illustration, what happens to most of the mass gained by the plant cell through photosynthesis? A) The mass is retu
blsea [12.9K]
D. <span>The mass produced by the photosynthesis reaction is used by the plant to fuel respiration and is turned into carbon dioxide, water, and energy.</span>
6 0
3 years ago
Read 2 more answers
3. While walking in the forest floor, you found an organism that has the following characteristics: had the consistency and appe
Leviafan [203]

Answer:

What are stinkhorns?  Stinkhorns are mushrooms that are found from the tropics to more temperate regions such as Wisconsin.  They can suddenly appear in mulch, lawns, and areas with bare soil.  These visually-shocking fungi get their common name from their characteristic, unpleasant odor.  Although they are often unwanted additions to home gardens, stinkhorns do not cause plant disease.  Because stinkhorns can grow on dead organic material, they actually are beneficial in that they contribute to the recycling of plant debris into nutrients that improve soil fertility and can be used by garden plants.

What do stinkhorns look like?  Stinkhorns grow into various shapes, but they are bestknown for looking like horns or penises.  A few species grow several appendages, resulting in an octopus-like appearance.  Some species have a veil attached below the cap that resembles a lacey skirt flowing from the mushroom’s hollow stalk.  Stinkhorns can range in color from white, beige, and olive to bright orange or red with black accents.  The tips of mature stinkhorns are usually coated in a spore-containing slime.  Gardeners often discover immature stinkhorns as they dig in the soil.  The immature forms appear as whitish to pink or purple, egg-shaped masses.  Stinkhorns develop rapidly sometimes growing up to four to six inches per hour, and can generate enough force to break through asphalt.

Where do stinkhorns come from?  Stinkhorns are often first introduced into a garden in organic materials (e.g., soils and mulches) that contain microscopic hyphae (i.e., fungal threads) of stinkhorn fungi.  Once stinkhorns mature, they produce a pungent, off-putting odor that is reminiscent of rotting flesh or dung.  This smell may disgust people, but it attracts insects, particularly flies.  Flies and other insects eat the slimy material at the tips of stinkhorns and carry spores in this slime to new locations as they move around in the environment.  In many ways, this process is comparable to the distribution of pollen by bees (but of course without the more appealing scents associated with most flowers).

3 0
3 years ago
Can one of you just answer my question on my last question? It's with 19 points. 
SSSSS [86.1K]

Answer: Okay, I'll take a look. :)

3 0
3 years ago
Other questions:
  • How can u identify a prokaryotic cell
    13·1 answer
  • Which of the following resources can replenish themselves by quick recycling and replacement , within a reasonable time , if man
    15·2 answers
  • If you looked for RNA in various parts of the cell, where would it be found.
    8·2 answers
  • Why is there no second interphase in Meiosis II?
    5·1 answer
  • Which of the following describes the role that enzymes play in the process of metabolism? A. Enzymes store the chemical energy t
    15·1 answer
  • According to the National Institute of Health, shock happens when blood pressure drops and blood and oxygen flow decreases to yo
    12·1 answer
  • The image above shows particles in a medium. Which of the following shows the best
    12·1 answer
  • What sugars are easily used by our bodies?
    13·2 answers
  • Coriander does not need support why?​
    9·1 answer
  • How is the composition of an organ best described?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!