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AnnZ [28]
3 years ago
11

Some interphase cells contain twice as much DNA as other interphase cells within the same tissue sample. Is this normal? Why?

Biology
1 answer:
FinnZ [79.3K]3 years ago
8 0

Answer:

Yes, Since the interphase cells in G2 would have twice the DNA as the interphase cells in G1 phase or start of S phase.

Explanation:

Interphase has three stages: G1, S and G2 phase. DNA replication occurs in the S phase and doubles the DNA content of the cell. So, the DNA content of the interphase cells of the same tissue depends on stages of interphase.  

The interphase cells which are in the G1 phase has half the DNA content as it is present in the interphase that has entered the G2 phase after completion of DNA replication in S phase.  

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In plant cells, a(n) _______<br> forms in the center of the cell during cytokinesis
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A Cleavage Furrow forms between the two plant cells.
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2 years ago
Suppose you increase your walking speed from 7 m/s to 12 m/s in a period of 1 s. What is your acceleration?
Nesterboy [21]
Accleration = (VelocityFinal - VelocityInitial) / Time

Accleration = (12 - 7) / 1

Accleration = 5 m/s^2
5 0
3 years ago
What is the role of ATP synthase in photosynthesis?
german

The role of ATP synthase in photosynthesis is to transports a proton down the gradient and uses the energy to complete the phosphorylation of ADP to ATP.

Further Explanation:

Photosynthesis starts with the absorption of light or solar energy by the plant pigments called chlorophyll. The activated chlorophyll molecule helps in the electron transfer from one acceptor to another forming a chain.

The first phase of photosynthesis the light-dependent reaction in which the absorbed light is utilized to produce molecules carrying energy that is used in the second phase to form carbohydrates by reducing carbon dioxide. The first phase occurs in the grana region of the chloroplast and involves the transport of electrons through photosystem II (PS II) followed by photosystem I (PS I). The energy gained by the chlorophyll molecule is transferred to PS II in the form of electrons. These electrons are passed on further through a series of electron transporter or carrier from PS II to PS I. In photosystem I, finally, the electron is gained by NADP+ to form NADPH.

The ATP synthesis is produced by the use of proton motive force this reaction is catalyzed by ATP synthase. This a multiprotein synthase is also well-known as F0 F1 complex .The ATP molecule is synthesized when proton flow back from the inner membrane down the electrochemical proton gradient . ATP synthase has two components F1 ATPase and F0 which is embedded in the inner membrane and contain alpha, beta and C unit.

As the electrons travel along the electron transport chain, energy is released which helps in the pumping of protons (ions) into the lumen from the stroma through the thylakoid membrane. A proton gradient is developed which allows the movement of protons back to the stroma which in turn results in the formation of ATP through membrane-bound ATP synthase

The second phase of the photosynthesis is the dark reaction or the light-independent reaction happens in the stroma and utilizes the products formed during the light-dependent phase.

Learn more:

  1. Learn more about cell organelle <u>brainly.com/question/5923583 </u>
  2. Learn more about the diffusion <u>brainly.com/question/1386629</u>
  3. Learn more about the plant <u>brainly.com/question/862697 </u>

<u> </u>

Answer Details:

Grade: High School

Subject: Biology

Chapter: Plant Cell

Keywords:

ATP synthase, light dependent reaction, thylakoid, stroma, grana, membrane, photosynthesis, alpha , beta, proton motive force.

5 0
2 years ago
Read 2 more answers
3-5 sentence explaining the
Elodia [21]

The water cycle is a system that shows how the water moves around in different states to transport itself. It uses different states which show a different transportation such as evaporation or condensation. The water cycle can also use continuous movement above and below the earths surface. There are five main steps to the water cycle which are evaporation, condensation, precipitation, transpiration, and runoff but there are still many more.

Hope this helps! :)

7 0
2 years ago
Drag each label to the correct location.
11Alexandr11 [23.1K]

Answer:

Box 1: AA

Box 2: Aa

Box 3: AA

Explanation:

In order to figure out the pedigree, you first have to do a punnet square- kind of like cross-multiplying. EX: For the first box: Aa x AA

For box one, we know that it is Aa, and not AA, because box 2 has to be AA.

We know that because Aa X Aa would give us some "aa" offspring which we do not see in the last generation (see 2nd pic). The only way to get no "aa" offspring is to have an AA X Aa cross.

6 0
3 years ago
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