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SSSSS [86.1K]
3 years ago
11

Are the majority of bacteria helpful or harmful

Biology
1 answer:
Tanya [424]3 years ago
3 0
Only around 10% of bacteria is harmful, so the majority of bacteria is helpful.
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tructures used in recombinant DNA technology to carry the DNA from the cells of one species to the cells of another species are
Kobotan [32]

The process of fusing two or more DNA molecules to produce a hybrid is known as recombinant DNA. Restrictions endonucleases and ligases are two classes of enzymes that enable the technique.

When a restriction endonuclease detects a particular DNA sequence, it makes cuts inside or near that sequence. The recognition sequence of a restriction enzyme will haphazardly appear on every (1–4)n bases along a random DNA chain. The equation states how many fragments ends (measured in moles) are produced when a restriction enzyme cuts DNA.

Moles of DNA ends =2x(grams of DNA)/(number of bp)(660 g/mol / bp).

The equation describes how many ends are produced when circular DNA is digested by a restriction enzyme.

Mole ends=2x(moles DNA)x number of restriction sites.

The following equation can be used to determine how many ends are produced during the digestion of a linear molecule by a restriction endonuclease.

Mole ends=2x(molesDNA)number of restriction sites +[2x(moles of DNA)].

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3 0
11 months ago
A scientist wants to increase the chance of pregnancy in mice. He gives the mice a hormone that causes them to produce more game
joja [24]

Answer:

C. Meiosis since it produces haploid cellsneeded for reproduction.

5 0
2 years ago
Give one example of how a group of ancient people used a version of antibiotics?
Serggg [28]
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8 0
3 years ago
Cerebrospinal fluid is produced by the
nikklg [1K]

Answer: Option A "Choroid plexus".

Explanation:

Cerebrospinal fluid can be defined as the fluid that is found in the brain and spinal cord of human beings. It is a clear and colorless fluid.

The production of cerebrospinal fluid takes place by the specialized ependymal cells that lies in the choroid plexuses which is present in the  ventricles of brain.

The amount of cerebrospinal fluid in a day is 500mL. This fluid acts as cushion that protects the brain from mechanical and immunological protection.

Hence, the correction answer is option A

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2 years ago
Mitosis is the cell division of what type of cells?
svlad2 [7]

Answer:

Mitochondrion

Explanation:

6 0
2 years ago
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