At which PH is pepsin most active?

1 answer:

4 0

Pepsin is most active in acidic environments between 37 °C and 42 °C. Accordingly, its primary site of synthesis and activity is in the stomach (pH 1.5 to 2).

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Why do you think it is important to study the science of human life (biology) in psychology

barxatty [35]

Answer:

to understand the human and animal behaviour

Explanation:

By looking at the biological bases of human behavior, psychologists are better able to understand how the brain and physiological processes might influence the way people think, act, and feel.

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2 years ago

Water is a living thing a true b . false c.none d.odd

Anuta_ua [19.1K]

Answer:

Explanation:

because it's doesn't breathe or mover

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3 years ago

Read 2 more answers

Select the correct answer from each drop-down menu.disease. Some carriers of the disease exhibit Sickle cell disease is passed o

Assoli18 [71]

Answer:

Inheriteted/Beneficial

Explanation:

First drop down: "Sickle cell disease is passed on from parent to offspring."

Inheriteted

Second drop down

A increased resistance to a bad thing (malarial parasites) would be Beneficial

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3 years ago

Different mRNA molecules can have poly-A tails of different lengths. Considering the purpose of adding the poly-A tail (from the

Roman55 [17]

Answer: Then the longer it is, the more it protects against degradation. Proteins that are needed over a long period of time come from a long tailed mRNA.

Explanation:

Messenger RNA (mRNA) is the ribonucleic acid that transfers the genetic code from the DNA of the cell nucleus to a ribosome in the cytoplasm. It determines the order in which the amino acids in a protein will bind and acts as a template or pattern for the synthesis of that protein.

Messenger RNA is synthesized in the cell nucleus in eukaryotes from the process called DNA transcription. In most cases, once this messenger RNA has been synthesized, it must be matured (RNA maturation). This involves the removal of intercalary sequences called non-coding introns from the protein to be synthesized. Then, the addition of a structure called CAP to the 5' end, which is a modified guanine nucleotide needed for the normal process of DNA transplantation and maintaining its stability. This is critical for proper recognition and access of the ribosome. Also, polyadenylation which is the addition of the sequence called Poly-A to the 3' end. The Poly-A sequence is made up of several adenine molecules and is located at about 20-30 bp towards the tail (AAPAA sequence) or polyadenylation signal, which protects the end of the mRNA. The polyadenylation helps to increase the period of the message, so that the transcription lasts longer in the cell and therefore more protein is translated and produced.

This mature messenger RNA is transferred to the cell's cytoplasm, in the case of eukaryotes, through pores in the nuclear membrane. The messenger RNA in the cytoplasm is coupled to the ribosomes, which are the machinery in charge of protein synthesis. However, after a certain amount of time the mRNA is degraded into its component nucleotides, usually with the help of ribonucleases. So, an mRNA with a short tail will have a shorter lifespan.

Then, proteins that are needed over a long period of time come from a long tailed mRNA. And proteins that are briefly nedded come from a short tailed mRNA. This is because, as explained, the Poly-A tail serves to protect the mRNA molecule from degradation. So, then the longer it is, the more it protects against degradation.

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3 years ago

Identify the order of the steps that lead from isolation to evolution

Amanda [17]

The steps of speciation are identified as reproductive isolation and genetic change. These can happen simultaneously or one after the other. This means that the main aim is to have new species through evolutionary changes brought by geographic barriers separating a population or due to behavioral change in a sub-population and even being reproductively isolated.

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4 years ago