13 Answered Questions for the topic respiration

21d

Anaerobic Respiration

Glucose partially breaks down into pyruvic acid during anaerobic respiration. This then proceeds to form Ethanol and Carbon Dioxide. My question is, what is the faith of the ethanol? Lactic acid in... more

01/02/20

Explain the homeostatic feedback mechanisms that control ventilation and circulation to include the pacemaker of the heart.

Explain the homeostatic feedback mechanisms that control ventilation and circulation to include the pacemaker of the heart.

10/05/19

Do you think the person with the greatest vital capacity can hold their breath longer?

 Do you think the person with the greatest vital capacity can hold their breath longer than those with a lower vital capacity? Consider the difference between internal respiration and external... more
Respiration Biology

09/17/19

Lactic acid - Anerobic respiration

I have learnt that lactic acid is produced during anaerobic respiration of muscle cells, which can cause cramps. However, it is not permanent. Then what happens to the lactic acid and how is it... more

How much oxygen does a plant use up at night?

Given the fact that plants cannot do photosynthesis at night but need respiration for their energy needs, they use up oxygen and generate carbon dioxide. But how much is this? If I fill a room with... more
Respiration Biochemistry Metabolism

07/29/19

About acetyl-coA in the Krebs Cycle of respiration?

In respiration, Krebs cycle starts with acetyl coenzyme A which is made from pyruvate. However, it is said that the cycle keeps repeat it self with oxaloacetate turning back to citrate and cycle... more

07/24/19

Where do plants get their food?

I am wondering how plants like pond lillies survive in the water without being in the ground.
Respiration Botany

07/09/19

How do plants get their O₂ for respiration during the night?

If I am not mistaken the stomata are closed during the night. As a result I have a hard time to imagine how the plant can get the O2 it needs for respiration during the night. I thought the plant... more
Respiration Biology Cell Biology

07/08/19

How is AMP "recharged" to become ATP in a cell?

I understand that after the translation stage of ribosomal protein synthesis, tRNA molecules are floating in the cytoplasm without attached amino acids until they find the correct aminoacyl tRNA... more
Respiration Biochemistry Breathing

06/24/19

What are the sources of molecular hydrogen in human breath?

In the BBC News article [CES 2019: Tech preview of the expo's hottest new gadgets](https://www.bbc.com/news/technology-46715334) there is a new product that one can use to measure the hydrogen in... more

06/11/19

Where do all the NAD+s come from?

In the mitochondrial respiration (of plant cells) NADH is reduced from Nad+ as part of the TCA (converting malate to oxaleoacetate). But where do the NAD+s come from? The TCA cycle is working even... more

05/10/19

During starvation, does the human body do anything to prioritize which organs receive nutrients?

When food is scarce, the body slows its metabolic rate to conserve energy. Are there any other systems or processes that prioritize which organs receive nutrients?

04/30/19

How does the body switch between aerobic and anaerobic respiration?

Lets take the case of a person doing heavy exercise. Aerobic respiration is taking place, but oxygen is about to be finished up. Glycolysis occurs, Krebs cycle finishes. Now NADH and... more

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