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irinina [24]
3 years ago
15

Compare how is a histone different from a nucleosome?

Biology
1 answer:
Oxana [17]3 years ago
5 0
A histone is a protein that interacts with DNA to coil it into a nucleosome.
A nucleosome is a small unit of DNA coiled around 8 histone proteins.

Therefore, the major difference is that a nucleosome is a small structure and histones are the proteins that help form the structure.
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What adverse response is known to occur in people who drink copious amounts of water while participating in intense physical act
MArishka [77]
The correct answer is hyponatremia. This is also called water intoxication in athletes. Water is a substance that is devoid of any solutes and electrolytes. The major extracellular electrolyte sodium is present in the extracellular fluid and the plasma. In the event of increased water intake, the sodium in the plasma will be diluted hence will cause hyponatremia.
3 0
3 years ago
What happens when light energy excites electrons in photosystem II?
Vlada [557]

Answer:

C. Electrons are released into the electron transport system.

Explanation:

Photosynthesis has both light dependent processes and light-independent processes. In the light-dependent reactions, photosystem II is the first protein complex. Photosystem II is present in the thylakoid membrane of plants.

<em>When the photons or light energy hits photosystem II, the free electron excites and released into the electron transport system (series of proteins). </em>The electron then passes through electron transport system and the energy from the electron fuels the hydrogen ions to move against their concentration gradient. Once the energy is utilized, the electron is accepted by photosystem I.

Hence, the correct option is C.

4 0
3 years ago
Read 2 more answers
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irinina [24]

Answer:D

Explanation:Because I got it right

3 0
3 years ago
Which of the following is an example of homologous structures?
Mars2501 [29]
The answer would be D. The definition of a homologous structure is an organ or body part that appears in different animals and is similar in structure and location, but doesn't necessarily share the same purpose. The birds and rabbits have similar bones in their forelimbs, but one uses them to run and other uses them to fly.
8 0
3 years ago
What treatment is being compared to the control in the experiment? what treatment is being compared to the control in the experi
stepan [7]

The correct answer is: the treated glioblastoma cells were cultured in the presence of an inhibitor from umbilical cord stem cells, but the control cells were cultured without the inhibitor.

It has been shown that treatment with injected umbilical cord stem cells has strong therapeutic effects on glioma models. Those cells produce anti-tumour substances, with inhibitory effects.

Control group does not include the treatment in order to observe the treatment.


7 0
3 years ago
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