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gulaghasi [49]
3 years ago
7

An enzyme is a _____ molecule.

Biology
1 answer:
sasho [114]3 years ago
8 0
Answer should be D. Protein
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NAD and FAD work by loading and unloading _________ and _________ during energy transfers.
andrezito [222]

Answer:

Hydrogen and electrons

Explanation:

Nicotinamide adenine dinucleotide (NAD) and flavin adenine dinucleotide (FAD) serve as reducing power during energy transfers. One NAD+ accepts one hydrogen ions and two electrons and becomes reduced into NADH. Likewise, FAD accepts two hydrogen ions and two electrons and is reduced into FADH2. Oxidation of NADH and FADH2 into NAD+ and FAD respectively releases both hydrogen ions and electrons.  

For example, some of the energy of glucose released during glycolysis and Kreb's cycle is temporarily stored in the form of NADH and FADH2. Oxidation of NADH and FADH2 via electron transfer chain of mitochondria releases both electrons and hydrogen ions (protons). The protons are pumped across the inner mitochondrial membrane to generate the proton concentration gradient.  

7 0
3 years ago
Pls help with these three questions
Mariulka [41]
9. Normal tides would remain the same but neap and spring tide cycle would be cut in half. Meaning if there was a neap tide after every 14 days it would come 2 times faster (after every 7 days)
4 0
3 years ago
The attraction between water molecules with other water molecules is know as
balandron [24]

Answer:Adhesion

Explanation:Is the attraction of water molecules to other molecules of different substances.  Water molecules are said to be polar which means that the molecule has a slightly negative charge and a slightly positive charge. This property of water allows it to interact with other polar or charges substances making it attract to other molecules.

8 0
3 years ago
Which of these is the correct method to test the odor of an unknown chemical?
babunello [35]
Hi.

After a quick search, I'm pretty positive you're supposed to use the wafting technique.<em>


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<em />Hope this helps.<em>
</em>
7 0
3 years ago
Describe the main molecule found in nucleus and explain how it controls the cells functioning​
SCORPION-xisa [38]

The main molecule found in nucleus is called DNA(deoxyribonucleic acid). This molecule is made of subunits called nucleotides. A nucleotide is made of a nitrogenous base that can be adenine, thymine, guanine or cytosine; a five carbon sugar called deoxyribose and a phosphate group. This molecule controns protein synthesis. Proteins are crucial to the cell's function.

8 0
3 years ago
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