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Nastasia [14]
3 years ago
12

7. Which of the following classes of biological molecules include enzymes?

Biology
1 answer:
Galina-37 [17]3 years ago
6 0
<span> Enzymes are usually proteins but some also contain nucleic acids (RNA in particular) and the list of chemical reactions that are catalyzed by RNA has been expanding. So the answer is proteins.</span>
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Sickle-cell anemia results from a point mutation in the HBB gene. The mutation results in the replacement of an amino acid that
Marizza181 [45]

Answer:

a) properties of the molecule as a result of abnormal interactions between adjacent hemoglobin molecules

Explanation:

In sickle cell disease, for example, a nonpolar amino acid (valine) replaces a polar amino acid (glutamate). This substitution of amino acids reduces the hemoglobin’s water solubility. The mutated hemoglobin molecules form long, stiff and rod-like crystals inside red blood cells which are otherwise not formed by normal hemoglobin molecules.

These abnormal crystals of hemoglobin cause the deformation of RBCs making them sickle-shaped that cannot properly squeeze through narrow blood vessels. Therefore, the substitution of single amino acid results in abnormal interaction of two or more hemoglobin molecules that are not exhibited by normal hemoglobin molecules.

5 0
4 years ago
How do alpha and beta particles get into the body?
laila [671]

Hello!

While they do not penetrate very far into the body, they can indeed get through.

Commonly, materials that emit alpha, beta or gamma radiation get  into the body alone or with other materials which have may become contaminated.

Here are some ways these could get in:

Through breathing; It could be in the air or mixed with dust, which is in the air.

Drinking; It disolves in water, meaning the material could get in your body without you knowing.

In the soil; If soil is contaminated, and plants grow in that soil, you will get a small ammount of alpha and beta particles.

Lastly, animals; Plants and animals can become contaminated, the particles coud be taken in through consumtion.

Hope this helps!

Have a great day!

6 0
4 years ago
All of these terms EXCEPT ___________ contribute to natural selection.
kotegsom [21]
A.Cladograms, because those are diagrams, all the rest contribute to natural selection.
4 0
3 years ago
Read 2 more answers
A _______ publishes short sentences that only take a few seconds to write, rather than long stories or posts.
USPshnik [31]

Answer:

Microblog

Explanation:

Microblog can be describes as a mixture of both blogging as well as instant messaging. Microblogging allows the users to share short messages as well as it also allows posting of these messages with an online audience. The content of micro blogging is much smaller as compared to the traditional blogging . The actual as well as the aggregated sizes of files of microblogging are much shorter than the tradiotional bloggings.

6 0
3 years ago
Researchers also measured oxygen consumption and intracellular NADH levels in BP-CML cells after exposure to pyrivinium. What di
emmasim [6.3K]

Researchers also measured oxygen consumption and intracellular NADH levels in BP-CML cells after exposure to pyrivinium. They most likely observed an increase in NADH levels and a decrease in O2 consumption.

Pyrivinium is an anti-helminthic drug effective against pinworms. The salts of pyrvinium can also be utilized as anticancer agents.

The findings of the study greatly favor a mechanism of pyrivinium which includes inhibition of mitochondrial respiration (MR). Since MR consumes oxygen, therefore, pyrivinium should reduce oxygen consumption.

NADH provides electrons to the electron transport chain (ETC). However, if the ETC is not operating properly, the NADH formed by the citric acid cycle would not be oxidized to NAD+ and H+. Therefore, NADH levels would increase ultimately.

To learn more about NADH here

brainly.com/question/14095785

#SPJ4

6 0
2 years ago
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