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seraphim [82]
3 years ago
5

In what order do the stages of prenatal development occur?

Biology
1 answer:
harina [27]3 years ago
5 0

 The process of prenatal development occurs in three main stages and they are listed in order;

<span>1. </span>Germinal Stage - begins at conception when the sperm and egg cell joined in one of the two fallopian tubes.

<span>2. </span>Embryonic Stage - begins at the beginning of the third week after conception. This stage plays an important role in the development of the brain.

<span>3.  </span>Fetal Stage - begins during the ninth week and lasts until birth.






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What is the role of ATP synthase in photosynthesis?
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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:

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<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
3 years ago
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When a scientist contrasts two or more objects what is he or she looking for
andrey2020 [161]

Answer:He or she is looking for a difference in the two objects

Explanation:

3 0
3 years ago
The question is in the pictures:)
grigory [225]
1) A
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The answers are already in the picture.

7 0
3 years ago
Which movement of particles would be most affected by a disorder that causes damage to carrier proteins ?
Makovka662 [10]

Active transport;

The movement of particles would be most affected by a disorder that causes damage to carrier proteins is the active transport.

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Active transport involves the movement of materials against the concentration gradient.

This type of transport requires energy in form of ATP to aid the movement of particles from a lower concentration to a higher concentration.

Active transport requires carrier proteins such as the sodium-Potassium pump, to move materials in and out of the cell.

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3 years ago
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For a science fair project, two students decided to repeat the Hershey and Chase experiment, with modifications. They decided to
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Answer: E. Amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

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Based on the information given in the question, the experiment will not work because amino acids (and thus proteins) also have nitrogen atoms; thus, the radioactivity would not distinguish between DNA and proteins.

Therefore, the correct option is E.

4 0
3 years ago
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