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ad-work [718]
3 years ago
7

At which steps do cells control gene expression?

Biology
1 answer:
tatyana61 [14]3 years ago
5 0

Answer:

b. transcription, translation, and the formation of the final protein

Explanation:

During transcription, exons are spliced together, introns are removed, a 5' guanosine cap is added, and a poly-A tail is added to the other end of the mRNA molecule, which is critical for the expression of a gene. During translation, you see control of gene expression in the form of regulatory proteins that bind to specific sequences or structures within the 5' or 3' UTR, preventing the attachment of ribosomes. Lastly, during formation of the final protein, some amino acids are altered via the addition of certain molecules like sugar or the removal of certain amino acids from the overall polypeptide, otherwise known as cleavage.

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________ are particularly polarizable. ________ are particularly polarizable. Small polar molecules Large nonpolar molecules Lar
mote1985 [20]

Answer:

____Large molecules, regardless of their polarity____ are particularly polarizable.

Explanation:

All the large molecules are called polar molecules because they have many bonds including ionic bond, Van der Waals forces or hydrogen bond and flexibility in conformation. This property also increase the boiling point of large molecules.

7 0
3 years ago
Explain why the average temperature on Earth would be 0 degrees Fahrenheit
Nady [450]

Answer:

The average temperature on Earth would be 0 degrees Fahrenheit because there would be nothing holding in the heat inside the atmosphere.

Explanation:

The Greenhouse effect happens when the heat from Earth gets trapped in the atmosphere, making the Earth warmer. Without the Greenhouse gasses, the heat escapes the atmosphere, leaving Earth to being colder.

7 0
3 years ago
During glycolysis, two hydrogen atoms are picked up by the coenzyme nicotinamide adenine dinucleotide (NAD). What B vitamin is r
Maslowich

Answer:

Niacin (Ans. A)

Explanation:

Nicotinamide adenine dinucleotide (NAD) is known as important cofactor which help in carrying electrons from one reaction to another reaction in the cellular respiration process.

Cells are able to restore performed compounds which are containing a pyrimidine base precursor vitamin for the synthesis of NAD: nicotinamide, nicotinic acid, and nicotinamide riboside.

These elements are taken up from the diet whos containing vitamin B3. Nicotinamide, and nicotinamide riboside both can be absorbed from the gut. Niacin or vitamin B3 also produced within cells with the help of cellular digestion of NAD+.

7 0
3 years ago
What happens when molten material is heated from Earth’s core?
Maslowich

Correct answer: Magnetic field is created when molten material is heated from earth's core.

Due to the movement of molten iron and nickel inside the core of the earth magnetic field is generated. Due the the generation of high temperature all the molten material are in the liquid form. A Coriolis force is generated due to flow of molten liquid, which result in the formation of magnetic field.

The magnetic field of the earth is used to protect the earth from the harmful  solar radiation .


6 0
3 years ago
Medical tests were conducted to learn about drug-resistant tuberculosis. of 142 cases tested in new jersey, 9 were found to be d
KengaRu [80]
Phat1 = 9/142
Phat 2 = 5/268
Phat 3 14/410
Test statistics = (Phat 1 - Phat 2) / (Square root of (phat × (1- phat))
times the square root of (1/n1 + 1/n2))
Test statistics = 2.373
P- value = 2× (1- normal cdf (2.373, 0, 1)) 
= 0.0176
At the level of significance, there is difference between the proportion of drug-resistant wihtin the two states.
3 0
3 years ago
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