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zhuklara [117]
3 years ago
12

What would happen if the electron transport system in the light-dependent reaction of photosynthesis was disabled for some reaso

n?
Biology
2 answers:
Andrei [34K]3 years ago
4 0
The electron transport system in the light dependent reaction of photosynthesis is the one that is responsible for the production of electrons that are used as precursor for NADPH production. The NADPH and the other products that are made during the light dependent reaction are used during the dark reaction to produce sugar molecules. So, if the electron transport is disabled, glucose molecule will not be produced during the dark reaction.<span />
vlabodo [156]3 years ago
4 0
If the electron transport system did not work, electrons from PSII would not be transferred to PSI. Ferredoxin would then have no electrons to transfer to NADP+<span> so NADPH would not be produced. This would also affect the light-independent reaction of photosynthesis because NADPH is needed in this reaction.</span>
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During meiosis I, _____________________. Group of answer choices homologous chromosome pairs are separated the chromosome number
spayn [35]

Homologous chromosome pairs are separated

Meiosis 1 refers to the initial stage of meiosis where one parent cell divides into two daughter cells. This stage is where homologous pairs of chromosomes will segregate and separate from each other and move into the two daughter cells which result in the division of the total chromosomal number by half.

<h3>What happens during Meiosis 1 ?</h3>

Meiosis I ends when the chromosomes of each homologous pair arrive at opposing poles of the cell.

  • The microtubules disintegrate, and a new nuclear membrane forms around each haploid set of chromosomes.

  • The chromosomes uncoil, forming chromatin again, and cytokinesis occurs, forming two non-identical daughter cells.

Learn more about Meiosis here:

brainly.com/question/8253366

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7 0
2 years ago
Natural selection suggests that creatures with mutations disadvantageous to survival will not live to reproduce, yet there are e
schepotkina [342]

Answer: No

Explanation: It is beneficial if the animals that are disadvantageous doesn't reproduce so it doesn't discredit natural selection. The traits in which variation is occured are more suitable for organism to live and reproduce in the environment are preserved and are passed from generation to generation.

However, natural selection effects limited number of progeny.

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3 years ago
Asbestos breaks down into small fibers. What may result if these fibers are inhaled?
Arte-miy333 [17]

The correct answer is - lung cancer.

The asbestos is a material that has been used very often in the past, mostly for making water pipes and roofs. Few decades ago it was proven that the asbestos actually breaks down into microscopic little pieces that are extremely dangerous. This little pieces, if inhaled, can gradually result in the development of a lung cancer. Because of what the research had shown, lot of people and institutions were in panic, so urgent and quick measures were taken in order to change the water pipes and the roofs.

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3 years ago
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Lena [83]
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3 years ago
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What is responsible for the yellow-orange coloration of leaves in the fall?
mixer [17]

The correct answer is - C) carotenoids.

The majority of the trees from the mid-latitude forests tend to shade their leaves in the autumn. This process occurs because of the seasonal changes in the climate, where the trees tend to be almost not-active during the winter, so in order to preserve as much energy and nutrients as possible they get read off their leaves.

It is not a sudden process, but it takes some time, where the leaves from the initial green color start to change to yellowish, than towards orange, reddish, or brownish before they fall.

The reason why this coloration appears in the leaves when the tree starts to process of shading them off are carotenoids. The carotenoids found in the leaves, the lutein and the beta-caroten, thorugh the xantophills and the flavonoids give a yellowish color to the leaves, thus we get the beautiful autumn colors and landscapes.

7 0
3 years ago
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