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Karolina [17]
2 years ago
9

The presence of which structure helps classify an organism as eukaryotic?

Biology
1 answer:
natita [175]2 years ago
8 0

Answer:

chromosomes

Explanation:

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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
Why is it important that cells contain catalase?
Triss [41]
<span>Catalase catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very </span>important<span> enzyme in protecting the </span>cell<span> from oxidative damage by reactive oxygen species. Hope this answers the question. Have a nice day.</span>
7 0
3 years ago
The average distance across an ocean is 16,000 km.Two continents on either side of the ocean are con-verging at a rate of 10 cm/
solmaris [256]
The average distance is 16,000 km
Converging rate is  10 cm/year
1 km = 100,000 cm
 = 16,000 × 100,000/10 cm/year
= 160,000,000 years
It will then take 160 Million years to collide.
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Which pair of atoms will form an ionic bond?
devlian [24]
B. sodium and chloride because an ionic bond only form between oppositely charged particles.
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3 years ago
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Which best describes a rhinovirus?
allochka39001 [22]
<span>B. A virus that causes a common cold

Hope this helps!
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6 0
3 years ago
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