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Questions tagged [cellular-respiration]

The process in which energy is liberated from organic molecules producing ATP.

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Do cold blooded animals generate any heat?

In explaining energy and work to an 8 year-old I said that all conversion of energy generates heat as a by-product. For example, cars generate heat in their engines and running generates heat in our bodies. Then the 8 year-old said, except for…
Jeff
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Why is ATP used as a source of energy rather than glucose?

I'm struggling to pinpoint a misconception, but I don't think I understand why ATP is used as an energy molecule instead of glucose. I understand that glucose is respired, oxidised or combusted and produces energy in the form of ATP so I guess what…
Jaja bae
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Source of hydrogen in reduction of oxygen in electron transport?

What's the source of hydrogen in the reduction of oxygen to water in metabolism? Is this implying that half the hydrogen comes from NADH and the other half from lone protons?
Dissenter
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Is oxygen a respiratory substrate

I know that carbohydrates such as glucose are respiratory substrates for cellular respiration, but in this process, oxygen is also used to produce ATP so is it also a respiratory substrate?
Rafael Franco
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why on hydrolysis ATP bond releases energy?

While studying respiration all i came across was that ultimately all that cell does is for the energy currency the ATP and some useful intermediates used in the cell building but i could not figure out how contrary to the notion of supplying energy…
Nitro phenol
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Cellular Respiration in Boiling Conditions

Here's the question: Imagine that you are given 25 germinating pea seeds that have been placed in boiling water for 5 minutes. You place these seeds in a respirometer and collect data. Predict the rate of oxygen consumption (i.e. cellular…
Sapphira
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Typical cellular respiration lab with a respirometer -- why is potassium hydroxide (KOH) necessary?

For context, if you are unsure what this question is in reference to, feel free to take a look at this video by Bozeman science and go forward to about the 2:00 mark. In a typical cellular respiration lab, in particular the one outlined by the…
Aleksandr Hovhannisyan
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What product of cellular respiration creates an acid when in solution with water?

What product of cellular respiration creates an acid when in solution with water? Topic question really, haven't been able to find a direct answer.
DoubleHelix
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How do the first and second law of thermodynamics adhere to breakdown of glucose?

I know the first law is energy can only be converted from one form to the other, therefore in the breakdown of glucose 40% potential energy is converted to ATP and 60% is converted to thermal and unusable. Does the second law adhere to the breakdown…
Jesse
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Is the respiratory substrate oxidised?

Cellular Respiration is a biochemical process in which food materials present in cell are oxidised slowly in presence of enzymes with the release of ATP and small amount of Heat. I am not able to relate this to the process of Fermentation(more…
S Das
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Cellular respiration, why double membrane in mitochondria and not bacteria?

Bacteria perform cellular respiration across a single membrane, their plasma membrane. What are the benefits of having double membranes in eukaryotes (in the mitochondria), and, how do bacteria achieve the proton gradient?
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Fructose vs glucose

I was watching a video on the dangers of fructose and comparing it to alcohol and all of this stemming from the fact that the liver can not break down fructose like it can glucose. But then I was reading an in depth depiction of glycolysis the…
Dominic Ellis
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Movement of protons during ETC

I don't understand why protons don't move from intermembrane space into the cytoplasm during chemiosmotic synthesis of ATP. Technically they should because their concentration is also lower in the cytoplasm and the outer mitochondrial membrane is…
Spluesh
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What happens to the ATP after it stores energy?

The title says it all. After the procceses of cellular respiration happen, the energy is used in different activities that use it, but which are them, more specifically?
Andrew1139
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