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
MariettaO [177]
3 years ago
14

Before mitosis begins, what happens during S-phase?

Biology
1 answer:
fomenos3 years ago
3 0

Answer:

the S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. in this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.

in S phase, the cell synthesizes a complete copy of the DNA in its nucleus. it also duplicates a microtubule-organizing structure called the centrosome. the centrosomes help separate DNA during M phase.

Explanation:

You might be interested in
True or False: The vertebra is an irregular bone.
Alexandra [31]

Answer:

TRUE

Explanation:

3 0
2 years ago
Storage polysaccharides, like starch and glycogen, often contain over a million glucose units. The energetic cost of synthesizin
Ivahew [28]

Answer:

Glucose present as monomers within the cell will exert more osmotic pressure than a single glycogen molecule, resulting in endosmosis and the lysing of cells.

Also, the presence of free glucose molecules will result in increase in weight of the liver due to lack of efficient packing as in glycogen as well as the association ofnthe glucose molecules with water molecules.

Explanation:

Glycogen is a polysaccharide composed of glucose monomer units linked to Each other by α-1,4-glycosidic binds. α-1,6-branches arises at about every 10th glucose residue in the straight chain. Thus animals more glucose molecules to be stored within a much smaller space, thereby incresing the bulkiness of glycogen. Glycogen molecules are insoluble in the aqueous medium of the cell because it doesn't have enough free polar groups to participate in hydrogen bonding with water and are stored as granules and therefore do not affect the water potential or osmotic balance of the cell.

On the other hand, glucose molecules are highly soluble in water because it has many free polar -OH grours that form hydrogen bonds with water. If the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose, the free glucose will exert a high osmotic pressure inside the cell, causing the entry of water in the cell by endosmosis resulting in swelling and lysis ofnthe cell. Also, the space occupied by these free glucose units within the cell will be much larger than that of glycogen whichmenables efficient packing ofthe glucose molecules.

5 0
3 years ago
What is a Parent cell? What is a Daughter cell?
valentinak56 [21]

Answer:

momy lomimPamaj uwiwiq

4 0
3 years ago
Read 2 more answers
The amount of water lost through the skin is almost ____ milliliters a day
vfiekz [6]
Hello friends...

500 milliliters

Hope this helps you....
7 0
3 years ago
Based on the life-cycle information, which statement best describes the relationship between the nest fly larvae and the young b
muminat

Answer:

The larvae are prey for the young birds. The larvae are predators of the young birds.

6 0
3 years ago
Other questions:
  • True or false, dr. jonas salk developed a vaccine for typhoid fever.
    13·2 answers
  • Describe the relationship between diffusion, cell.size, surface area, and cell volume
    15·1 answer
  • PLEASE ANSWER !
    5·1 answer
  • I need multiple reasons as to why viruses are not living organisms
    11·1 answer
  • Las proteínas son sustancias utilizadas para la regeneración de los tejidos. Una célula que presente dificultades para producirl
    12·1 answer
  • Study the timeline.
    14·2 answers
  • In a capture-recapture study, a biologist tagged and released 230 deer. A mouth later she captured 60 deer, 10 of which had a ta
    9·1 answer
  • Which layer forms the largest portion of Earth?
    5·1 answer
  • Use Fractions
    5·2 answers
  • The leading cause of limited water supplies is _______. a. low precipitation b. overuse c. limiting use d. government please sel
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!