What only happens during a chemical reaction?

1 answer:

5 0

B. New substances are formed. In a chemical reaction, the starting molecule must be changed or turn into another. For example: rusts that form in a tin can is a chemical reaction. The iron in the can combines with the oxygen in the atmosphere, creating rust (iron oxide), which is a different substance.

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What determines which plants to grow where?

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The soil and sunlight

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The type of chemical reaction responsible for breaking polymers back down into monomers is known as a condensation (or dehydrati

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This statement is false. When breaking down polymers into monomers, the reaction that takes place is hydrolysis. Remember when combing monomers the water is taken out dehydration, when breaking them up, you have to add a cleaved water molecule, and the breaking of water is hydrolysis.

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An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in which function?

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An animal cell lacking carbohydrates on the external surface of its plasma membrane would likely be impaired in CELL TO CELL RECOGNITION.
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One function of the poly-A tail on eukaryotic MRNA sequences is to help the MRNA be transported from the nucleus to the cytoplas

Alinara [238K]

Answer:

In eukaryotes, it is well known that polyadenylation is required to produce the mature messenger RNA (mRNA) molecule and it provides stability to the mRNA during translation initiation. In prokaryotic organisms, polyadenylation is required for the degradation of the mRNA in a mechanism that involves three steps: endonucleolytic cleavage, polyadenylation and exonucleolytic degradation. Moreover, it is also important to note that no evidence of polyadenylation has bee reported in some prokaryotes including the halophilic bacteria Haloferax volcanic (Slomovic et al. 2005).

Citation:

Slomovic, S., Laufer, D., Geiger, D., & Schuster, G. (2005). Polyadenylation and degradation of human mitochondrial RNA: the prokaryotic past leaves its mark. Molecular and cellular biology, 25(15), 6427-6435.

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the esophagus is the tube that connect the mouth to the stomach. heartburn occurs when some kf the stomach juives flow backwards

beks73 [17]

Answer:

To help relieve heartburn, a person should take medicine that is 'Over-the-counter (OTC) antacids and acid blockers'.

EXPLANATION:

Heartburn is a very common symptom of a condition called Gastroesophageal reflux disease.

This affects the lower part of the esophageal sphincter and also the muscle ring-like connection between the 'esophagus and stomach' which tends to infuse a backward flow of the stomach secretions.

Along with some dietary and life style changes, the intake of antacids and acid blockers can help in the relieve of the symptoms of occasional heartburn.

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