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finlep [7]
3 years ago
10

The human colon supports a large population of beneficial bacteria. How are these bacteria beneficial?

Biology
1 answer:
maria [59]3 years ago
7 0
They benefit us because they (E. Coli) produce many vitamins such as vitamin K and B-complex vitamins.
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A mutation in _____ results in a change in _____ that sometimes produces a(n) _____ with altered structure and function.
xenn [34]

Answer:

A mutation in <u>DNA </u>results in a change in <u>RNA </u>that sometimes produces a <u>protein </u>with altered structure and function.

Explanation:

DNA is the hereditary material which causes gene expression in our body by producing protein. The type of protein which is produced by DNA totally depends upon the sequence of nucleotides in the DNA. But, DNA molecule does not produce protein directly. Initially it produces RNA (mRNA, tRNA, rRNA) by the process of transcription, the nucleotides in the RNA are complimentary to those in DNA. In short, the message regarding the structure and composition of the type protein to be produced by DNA is first decoded from DNA in the form of RNA. These RNA molecules then synthesize the protein as per the instructions from DNA by the process of translation.

But, in case a mutation occurs in the DNA which causes a change in it's nucleotide/nucleotides, the protein which will be produced will be different in the structure and function than the protein which was supposed to be synthesized. It happens because, a triplet of nucletiodes in the DNA and hence RNA specifies a particular type of amino acid and several amino acids are joined in a long chain to form polypeptide which ultimately forms protein. But, if any nucleotide in the triplet is changed due to mutation it may change the amino acid and if amino acid will change the protein will also get altered.

3 0
2 years ago
Scientists have discovered and identified only a fraction of the species living and extinct. True or False?
insens350 [35]

Science

This is true because humans can only know so much due to unexplored lands, water depth, and evidence of extinction being hidden.

5 0
2 years ago
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At which one of the following days in the 28-day cycle is a woman MOST likely to get pregnant?
motikmotik

Answer:

The answer is day 14 - / + 3 days

Explanation:

In a 28-day menstrual cycle the most likely days for a woman to become pregnant is from day 14 - / + 3 days, that is, days 11, 12, 13, 14, 15 and 16. She should be educated, If she is in search of pregnancy, take the vaginal temperature and realize how the viscosity of the abundant flow begins to present.

4 0
2 years ago
Help answer 13,14,15
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Answer:

13. Net Force = 0

14. The forces are balanced

15. Constant motion or Equilibrium will occur

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How do you describe that cells are the basic units of structure to a 7 year old?
Andreas93 [3]
Show how little things make up bigger things and a microscope or images of microscopic things.
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3 years ago
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