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laiz [17]
3 years ago
12

Explain the phenomenon of photorespiration, including why it is thought to occur (evolutionarily speaking), and why plants have

evolved to minimize its occurrence.
Biology
1 answer:
liubo4ka [24]3 years ago
4 0

Photorespiration limits casualty products of light reactions that build up in the absence of the Calvin cycle. In many plants, photorespiration is a problem because on a hot, dry day it can drain as much as 50% of the carbon fixed by the Calvin cycle.  The closing of stomata reduces access to CO2 and causes O2 to build up. These conditions favor a seemingly not useful process called photorespiration.  In most plants (C3 plants), initial fixation of CO2, via rubisco, forms a three-carbon compound.  In photorespiration, rubisco adds O2 instead of CO2 in the Calvin cycle. Photorespiration eats up O2 and organic fuel and releases CO2 without producing ATP or sugar. Photorespiration can evolve relic because rubisco first evolved at a time when the atmosphere had far less O2 and more CO2. 

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Whoever answers first and it's correct will get Brainlyeist!! please help me out!!
docker41 [41]

Answer:

A lunar eclipse can only occur when there is a full moon.

Explanation:

A lunar eclipse occurs when the Moon, Earth and Sun are aligned on a straight line. This alignment completely blocks the sunlight and moon is under the shadow of Earth. In this phase, moon often look red because of reflection of infrared radiations. This happens only where there is a full moon.

It is not possible to occur moon eclipse in any phase because if sunlight would reach the moon surface directly, it is not a moon eclipse Further, lunar eclipse can last upto a few hours because the shadow of Earth is greater because of its size compared to the moon's size and it takes a while until moon is completely out of that shadow. Lastly, a lunar eclipse doesn't create an eerie color in the sky rather a red color due to infrared radiations.

5 0
3 years ago
In the cross BB x bb, the percent of offspring in the F1 generation that will have the same genotype as one of their parents is
EleoNora [17]
It would 0%
You have to make the chart to figure this out.
You put BB on the top and bb on the side than multiply.
6 0
3 years ago
Read 2 more answers
In the example of adrenaline signaling used in the animation, suppose each amplification step produces hundredfold active molecu
sesenic [268]

Answer:

D. 1000000

Explanation:

Adrenaline signaling occurs when the the hormones clings to the cell surface of the Adrenaline receptor.

The total modified protein target molecules resulting from a single activated signal receptor is 1,000,000 and this results in the consumption of 100 molecules of Guanosine triphosphate (GTP) and 1,010,000 molecules of Adenosine triphosphate (ATP).

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3 years ago
Hyperglycemia (elevated blood sugar levels), such as would happen in diabetics, can damage the glomeruli.
Zielflug [23.3K]

Answer:

True

Explanation:

Hyperglycemia which means high Glucose level in the blood as a result of lack of insulin can damage the glomeruli. This interfere with the function of the glomeruli. Normally glomeruli fiters blood and remove nutrients to form urine but hyperglycemia will affect it's negatively and will make protein to leak from the blood into the urine. This can also lead to glomeruli called glomerulosclerosis.

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2 years ago
The outer layer of an envelope virus might help a virus ____.
DaniilM [7]
C. Survive long periods of dormacy
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3 years ago
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