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saul85 [17]
3 years ago
5

Analyzing DNA by gel electrophoresis allows researchers to

Biology
1 answer:
Hunter-Best [27]3 years ago
7 0

Answer:

A. identify similarities and differences in the genomes of different kinds of organisms

Explanation:

DNA gel electrophoresis is a method often used in molecular biology, for the separation and analysis of DNA fragments.

Just like the name says it is performed on the gel (e.g. agarose gel) and electric field is applied for the separation of negatively charged DNA fragments. Fragments are separated by size (short fragments travel faster towards the positive electrode). Results of the gel electrophoresis are visualized via a DNA-binding dye and UV light and compared with standard reference called DNA ladder.

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Volume is defined as the amount of mass that an object has? True or false
maria [59]

Answer:

False

Explanation:

Mass and volume are two different quantities. In fact:

- Mass is a scalar quantity representing the "amount of matter" contained in a certain substance. It is measured in kilograms (kg), which is one of the 7 fundamental SI units.

- Volume is a scalar quantity representing the amount of "three-dimensional space" occupied by an object or a substance. It is measured in cubic meters (m^3).

Therefore, mass and volume are two different quantities. They are related through another quantity called density, given by:

d=\frac{m}{V}

where

m is the mass

V is the volume

So the density of a substance represents the amount of mass contained in a certain volume of the substance.

3 0
3 years ago
How would a nurse test a patient's superficial reflex?
Natali5045456 [20]
By knocking at the bend of the knee with a small "hammer". If the leg "spasms" then the superficial reflex is in working condition. Hope this helps :)

5 0
3 years ago
In a soil food web is Bacteria and Fungi, dead and decaying organic matter and plants the producers???
Brrunno [24]

Decomposers play a critical role in the flow of energy through an ecosystem. They break apart dead organisms into simpler inorganic materials, making nutrients available to primary producers.

Explanation:

5 0
4 years ago
What are the causes and effects of DNA mutations?
sashaice [31]

Explanation:

The cause of DNA mutations is exposure to radiation from the sun and the effects of the DNA mutations are harmful mutations cause genetic disorder or cancer, changes gene's instruction for

making protein causing malfunction.

5 0
3 years ago
Read 2 more answers
Maria is a retired factory worker who lives with anxiety. Due to the fear of having anxiety attacks, she does not leave her hous
Margaret [11]

The correct answer would be, Subjective Distress.

Maria has not left her house for the last two years. Subjective Distress would be the most appropriate in deciding whether Maria's case represents an example of abnormality.

Explanation:

Subjective Distress is an extreme mental condition in Psychology. Distress means extreme pain, feeling of suffering, sorrow, agony, torment, etc. It is called as the Subjective Distress because it is associated with an individual which is the subject in this disorder.

In this disorder, the person feels extreme discomfort, pain and anxiety.

So when Maria has a fear of having anxiety attacks in public, she prefers to stay at her house rather than going in the public. Because this is the pain and feeling of discomfort experienced by the person only, this is called as Subjective Distress.

Learn more about Subjective Distress at:

brainly.com/question/14151856#

#LearnWithBrainly

5 0
3 years ago
Read 2 more answers
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