Biology High School

What is gel electrophoresis used for?
O A. Cutting DNA into sections
O B. Separating strands of DNA
O C. Performing reverse transcription
O D. Cloning organisms

Answers

Answer 1

Answer:

B. separating strands of DNA

Answer 2

Gel electrophoresis used for separating strands of DNA

What is electrophoresis?

Electrophoresis can be defined as a technique used to separate molecules of DNA, RNA or protein molecules on the basis of their electrical charge and size

It also used to identify microorganismsIt is also used in genetic testingElectrophoresis analysis is used in forensics to compare DNA,

Below are four major components of gel electrophoresis:

DNA is extractedIsolation and amplification of DNADNA added to the gel wellsElectric current applied to the gel.

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Related Questions

Which graph shows the presence of nitrogen-fixing bacteria in the soil

Answers

Answer:

2

Explanation:

The graph that shows the presence of nitrogen fixing bacteria in the soil would be graph 2.

Nitrogen fixing bacteria are bacteria that are capable of converting atmospheric nitrogen into plant-usable nitrogen in the soil. The conversion is done in two stages;

1. First, atmospheric nitrogen is converted into ammonia.

2. Ammonium is converted into usable nitrate

Hence, the correct graph is the one in which the amount of atmospheric nitrogen decreases with a corresponding increase in the amount of ammonia. This would indicate the conversion of nitrogen into ammonia which is the first step in nitrogen fixation by nitrogen-fixing bacteria.

Graph 2 represents the presence of nitrogen-fixing bacteria in the soil.

This is because in this graph the concentration of atmospheric nitrogen (N2) is lower and the concentration of ammonium (NH4) is higher. The nitrogen-fixing bacteria converts or fixes atmospheric nitrogen that can't be absorbed by the plants into ammonium or nitrates which can be absorbed by the plants and make necessary amino acids for the body so we can conclude that graph 2 indicates the presence of nitrogen-fixing bacteria in the soil.

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Facilitated diffusion requires _____.
A.membrane proteins
B.transport proteins
c.membrane pouch
d.energy
I NEED HELP ASAP!!
(i will mark brainliest or like your tiktoks l m a o)

Answers

Answer:B

Explanation:

Answer:membrane proteins is the right answer

Explanation:

2. Assume that crossing over does not occur in the region of each chromosome that is associated with the centromere. You have 46 centromeric regions in each cell, 23 that are copies of the DNA in your mother’s egg and 23 that are copies of the DNA father’s sperm. Show your work for A,B,C a. For any given gamete, what is the probability that all the centromeric regions (chromosomes) will be copies of the same ones that you received from your mother? b. It has been estimated that the average person is heterozygous for at least 2,000 protein forming genes. How many different kinds of gametes is it theoretically possible for each person to produce? c. Considering the maternal and paternal origin of the centromeric regions alone, how many different kinds of gametes can you produce?

Answers

Answer:

See below

Explanation:

A. centromeric regions from mother in one cell: 23

total number of centromeric regions in one cell: 46

for every centromeric region that is inherited by the gamete, there is a 0.5 probability that it is from the mother. Hence, if all are from the mother:

0.5 ^ 23 = 1.19 x 10^(-7)

B. Heterozygous for 2000 genes means 4000 possible alleles.

2 ^ 4000 = 1.3 x 10^(1204)

C. 2 ^ 46 = 7.03 x 10^(13)

differentiate between reverse osmosis and osmosis​

Answers

Osmosis is a special case of diffusion in which the molecules are water and the concentration gradient occurs across a semipermeable membrane. Reverse osmosis occurs when the water is moved across the membrane against the concentration gradient, from lower concentration to higher concentration.
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