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bagirrra123 [75]
3 years ago
7

20 POINTS AND BRAINLIEST

Biology
1 answer:
Aleksandr [31]3 years ago
4 0

Answer:

Middle layer of the meninges that contains the cerebrospinal fluid

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Water obtained from natural resources does not show neutral pH. What is the reason behind this?
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The water from natural resources contain minerals that change the ph of water.
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Excitatory neurotransmitters do which of the following?
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d. All of the above

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A geneticist isolates a gene for a specific trait under study She also isolates the corresponding mRNA Upon comparison, the mRNA
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C) no, the final mRNA contains only exons, the introns were removed

Explanation:

Exons are the coding areas while the introns are non-coding areas. Both of these are the sequences of nucleotide within a gene.

RNA splicing is a process which usually occurs as the RNA matures, causing the removal of introns ( non coding areas of the RNA ) i-e they will not be expressed in the final messenger RNA, while exons continue to form covalent bonds with one another to form a  mature mRNA.

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Hence option C) no, the final mRNA contains only exons, the introns were removed is correct.

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3 years ago
Based on what you know about the regulation of cell growth, make a list of questions you would ask as you observe the cells.
sertanlavr [38]

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What genes control the growth of cell growth? What is the purpose of this regulation? What happened when the cell growth is not regulated?

Above are the questions which an observe would ask about regulation of cell growth. A number of genes such as oncogenes and tumor suppressor genes are involved in the regulation of cell growth and cell division. Regulation of cell growth process ensures that a cell's DNA which is dividing is copied properly as well as repair errors in the DNA. It also ensures that each daughter cell receives a complete set of chromosomes in order to gain healthy daughter cells.

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