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defon
3 years ago
9

David is a 60-year-old smoker that has developed emphysema. This condition affects the lungs and prevents them from exchanging c

arbon dioxide and oxygen. Specifically, oxygen cannot move from a high to low concentration in the lungs because the lungs are damaged.
Biology
1 answer:
tekilochka [14]3 years ago
7 0

Answer:

He must get oxygen from the hospital

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Dimples (D) are a dominant trait. Two parents with dimples have 3 children, one with dimples
pantera1 [17]

Answer:

Parent 1 genotype: Dd

Parent 2 genotype: Dd

Child 1 (dimples): Dd or DD

Child 2 (no dimples): dd

Child 3 (no dimples): dd

Explanation:

No dimples (d) - recessive

D (dimples) masks d (no dimples), therefore D (dimples) is expressed

3 0
3 years ago
Write down the clinical findings which are least suggestive of left-sided heart failure?
Arada [10]

Answer:

Adverse heart conditions do not occur in isolation. It is usually accompanied by other risk factors, like coronary artery dysfunction, diabetes, high blood pressure, etc.    

In addition to the above, the following factors are indicative of left-sided heart failure:

  • Shortness of breath caused by the collection of fluid in the lungs. Shortness of breath usually becomes pronounced upon physical exertion
  • An increase in the girth of the torso (mainly the abdomen) due to ascites which is the buildup of fluid in the abdomen.
  • engorged scrotum (in males of course)

Explanation:

Left-Sided Heart Failure is simply the inability of the heart to pump oxygen-rich blood into the body.

Blood filled with oxygen is moved from the lungs to the atrium on the left and then to the left ventricle. The blood is then pumped from the ventricle on the left to other parts of the body by a contracting and relaxing action. Left-sided heart failure can be classified into two:

  1. Systolic Failure and
  2. Diastolic Failure

1. Systolic Dysfunction: When the left ventricle can no longer shrink properly, the pressure with which the heart can pump enough blood into circulation is reduced.

2. Diastolic Dysfunction: This occurs when the left ventricle can no longer relax as it ought to due to the hardening of the muscle.

Cheers

7 0
3 years ago
In a small group of people living in a remote area, there is a high incidence of "blue skin" a condition that results from a var
Alisiya [41]

Answer: (A) Genetic drift

Explanation:

  The genetic drift is one of the process of random sampling in which the existent gene frequency are get changed in the organisms and it is also refers as the allelic effect.

According to the given question, In a small remote area the different types of people are living and in that area the "Blue skin" condition is highly incidence due to the variation in the hemoglobin structure.

So, the high frequency in the Blue skin in that specific area is one of the example of the genetic drift and the main role of the genetic drift is to determining the sampling error from the different generation gene.    

  Therefore, Option (A) is correct answer.  

8 0
3 years ago
What are the ten biomes, and what appears to be the most prominent biome in North America, South America, Asia, Africa, Australi
Digiron [165]
Tropical Rain ForestTropical Dry ForestTropical SavannaDesert
Temperate Grassland
Temperate Woodland and ShrublandTemperate ForestNorthwestern Coniferous ForestBoreal ForestTundra<span>
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5 0
3 years ago
A recent study has shown an increase in the number of predators in an ecosystem. Which of the following is not a possible cause
Dmitrij [34]

one of the following that is not a possible cause for the growth is  B

An increase in the population of prey it feeds on.

4 0
3 years ago
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