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siniylev [52]
3 years ago
9

Select the correct answer.

Biology
2 answers:
vampirchik [111]3 years ago
8 0

Answer:

The answer is:

D.  A mutation causing uncontrolled cell division.

Uncontrolled cell division is very dangerous and harmful to an organism, it can cause diseases such as cancer. Hope that helps. :)

koban [17]3 years ago
6 0

Answer:

D. a mutation causing uncontrolled cell division

Explanation:

Mutations can be beneficial, neutral or harmful and therefore are not targeted, occurring at random. This means that a change in DNA can provide an improvement in the body, cause no advantage or harm or even trigger problems, as in the case of genetic diseases. Thus, a mutation does not arise to guarantee the evolution of an organism, but is completely random.

Beneficial mutations are those that bring benefits to the body by helping it survive, or by helping with a particular task. We can cite as beneficial mutations:

  • a mutation allowing moths to camouflage better on blackened tree bark
  • a mutation making Staphylococcus aureus resistant to the antibiotic methicillin
  • a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell
  • a mutation giving plant leaves a bitter taste to discourage herbivores from eating them

On the other hand, an evil mutation is one that causes damage to the body, such as a mutation that causes uncontrolled cell division.

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The stethoscope is a device commonly used by doctors to monitor heart function. When listening to a heart beating using a stetho
Effectus [21]

Answer:

The correct answers are:

1. closing

2. the ventricles and arteries,

3. a constricted trachea

Lub is the first sound of a heartbeat and is mentioned as S1. It is usually produced due to the closing of tricuspid and and mitral or bicuspid valves present between atria and ventricles.

Tricupsid is located between atrium and ventricle of the right hand side and mitral valve is located between atrium and ventricle of the left hand side. They prevent the back flow of blood from ventricles to their respective atria.

Dub, being the second sound is written as S2. It is produced due to the closing of pulmonary (located between right ventricle and pulmonary artery) and aortic valves (located between left artery and aorta).

These valves prevent the back flow of blood from arteries into the ventricles.

The time between the two sounds is often taken as the measure of the diastole i.e. ventricular filling.

Wheezing refers to a high-pitched sound produced when a person breathes, especially during exhale. It is caused by constriction of the airways or inflammation. It is considered as a symptom of various diseases such as asthma, COPD, allergies, bronchitis etc.

8 0
3 years ago
In what way did scientists most likely help change the attitudes about
podryga [215]

Answer:

The cleaning up of Lake Washington didn't occur overnight. It started with the process of providing scientific information to the public and the public decided to take action.

The action was persistent and the results yielded took a long while to materialize properly.

Upon receipt of the information from scientists that a particular bacteria was responsible for damaging the ecology of the water body, the public resorted to conveying all effluents to a treatment plant rather than dump same in to the Lake.

Cheers!

8 0
3 years ago
How many molecules of dna would result from one molecule after five cycles of pcra)10b)14c)5d)32
Sergio039 [100]

i say <u>D.) 32</u> is the answer.

5 0
3 years ago
Discuss the effect of latitude on the intensity and duration of sunlight
seraphim [82]

Answer:

jsjeheheeh

Explanation:

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7 0
3 years ago
Please answer all thanks i’ll give brainliest
Len [333]

Answer:

the law of conservation of energy states that energy can not be created or destryed, it can only be transferred between forms. With regards to the total energy in a system, it remans constant as energy can not be created or destroyed.

Explanation:

4 0
3 years ago
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