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kvasek [131]
3 years ago
8

Dna, the genetic material of living organisms, is damaged by light in the

Biology
2 answers:
asambeis [7]3 years ago
6 0
Ultraviolet sun rays it damages the cells and can cause skin cancer.
gayaneshka [121]3 years ago
6 0

Answer: ... in the UVB light exposure.

Explanation: When DNA is exposed to UVB radiation, thymine bases that are close to each other in the genetic sequence bond together, and this bond <u>cannot be copied</u> by the enzimes responsible for reproducing the genetic material. In the skin, it causes sunburns and stimulates the production of melanin. Luckily, DNA is only damaged by 0,1% of those UVB radiation photons, but even this percentege is enough to cause a sunburn anyway.

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help me plz Which statement best explains why cells were observed in more detail using a compound microscope than a simple micro
Gnoma [55]

Answer:

Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?

A compound microscope has greater magnification ability than a simple microscope.

Explanation:

Hope this <em><u>Helped!</u></em> :D

8 0
3 years ago
Suppose that an unusually high degree of aurora kinase activity is observed in the cervix. what could we reasonably conclude abo
adoni [48]

Answer:

The preferable statement will be - D

D. insufficient information is available to make conclusions about c5m treatment efficacy.  

Explanation:

  • The given information does not disclose that the C5m would work in all cervical cancer strains.
  • Though it seems like c5m will work only when p53 expression is off. Option B is also correct from this context.  

Nothing can be surely said because of insufficient information.

4 0
3 years ago
Drag and drop the appropriate labels into position to explain how this defect might cause mr. g's other problems.
marissa [1.9K]

How does Mr. G's altered blood flow explain his signs and symptoms? Drag and drop the appropriate labels into position to explain how this defect might cause Mr. G's other problems. Fill the boxes in order, starting with 1, then 2, etc

(Image attached)

Answer:

  1. When left ventricles contracts, some blood goes up through mitral valve into the left atrium, Turbulent flow through the valve causes systolic murmur. the atrium is overfilled and dilated.
  2. Because some blood re-entered the mitral valve, less is pumped out into the aorta. the ejection fraction is only 43%
  3. Less blood enters aorta, so SBP is low. Baroreceptor reflex causes increased heart rate; wall of overworked left ventricles becomes thicker
  4. Because its already partly full of blood from the ventricle, the left atrium accepts less blood from the lungs, the lungs overfilled with fluid; resulting in troubled breathing.

Explanation:

A murmur is a result from a abnormal blood flow to the heart.Its basically an unusual sounds that is heard between heartbeat A systolic murmur occurs when the heart muscles contracts. i.e they begin and end between S1 and S2.

From the above information, it seems like Mr G is experiencing mitral regurgitation. It is a condition where mitral valve doesnt close tightly and as a result the blood flows back from the left ventricle into the left atrium.

8 0
3 years ago
Which of the following statements about nuclear energy is true?
Eddi Din [679]

Answer:

Nuclear energy can be used and controlled and it is more efficient than other forms. I would say B.

7 0
3 years ago
The function of mitosis is
sergiy2304 [10]
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell? divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
3 0
3 years ago
Read 2 more answers
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