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GalinKa [24]
3 years ago
5

Is CF more prevalent in some populations verse others?

Biology
1 answer:
8_murik_8 [283]3 years ago
3 0

Cystic fibrosis (CF) affects both males and females and people from all racial and ethnic groups. However, the disease is most common among Caucasians of Northern European descent.

CF also is common among Latinos and American Indians, especially the Pueblo and Zuni. The disease is less common among African Americans and Asian Americans.


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1. Which of the following statements are true?
hammer [34]

Your answers would be:

1. ---- B. A cell cannot be subdivided into smaller units that maintain the living state.

2. ---- The organism is a eukaryote because it has a nucleus.

3. ---- D. Water would flow into them because they are hypertonic to external environment.

If you want to know why:

1. The cell is the basic unit of life or in other words, its the smallest unit that makes up a living thing. It does not subdivided further if you are talking about sustaining life. Yes, it is made up of smaller units of organelles, but these organelles work together as a single unit (as a cell), to do life sustaining processes.

2. The organism is a eukaryote because of the presence of a nucleus. This is one of the main features of a eukaryote that differentiates it from a prokaryote. Prokaryotes to not have a true nucleus.

3. Water would flow into them, causing the cell to swell and eventually burst if the concentration of solutes would not even out before then. The process of osmosis is what brings the water into the cell. The cell would have a higher solute concentration than freshwater. Through osmosis, the water would then go to the area of higher concentration, which would be the cell.


3 0
3 years ago
Read 2 more answers
Countercurrent multiplication involves A) ions leaving ascending limb to make water come out of the descending limb B) water lea
Snowcat [4.5K]

Answer:

The correct option is A

Countercurrent multiplication is the process whereby energy is used to generate an osmotic gradient in which water is reabsorbed from the tubular fluid to produced concentrated urine.

Explanation:

Countercurrent multiplication moves sodium chloride from tubular fluid into interstitial space deep within the kidneys. The concurrent multiplication process build up osmotic gradient interstitial fluid in a single effect. Here, sodium chloride is driven by active transport out of the tubular fluid in the thick ascending limb into the interstitial fluid, which becomes hyperosmotic. This result to water moving passively down its concentration gradient out of the tubular fluid in the descending limb into the interstitial space to a point where it attains a state of equilibrium.

Therefore,the correct option is A, where the ions leaves the ascending limb to make water comes out of descending limb.

4 0
3 years ago
Which of the following causes the movement of the Earth’s atmosphere?
polet [3.4K]

Answer:

D.

Explanation:

All of these factors cause movements of the Earth's atmosphere. D is the correct answer.

3 0
4 years ago
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Identify five changes in medcial care over the past years that have affected the profession of medical assisting.
Leni [432]

Explanation:

A medical assistant's scope of practice generally does not include these duties: Independently perform telephone triage (medical assistants are not legally authorized to analyze and interpret data or diagnose symptoms). Independently diagnose or treat patients. Inject collagen.

6 0
3 years ago
Is commonly treated with a combination of chlorhexidine and polyhexamethylene biguanide.
poizon [28]

Answer:

The correct option is : a. Acanthamoeba keratitis

Explanation:

Acanthamoeba keratitis is the infection of the cornea of the eye. This infection is caused by the protozoa Acanthamoeba and can lead to permanent blindness. This disease is very difficult to treat by using conventional medications.

The common medication used in the treatment of this infection is a combination of polyhexamethylene biguanide (0.02% to 0.06% drops) and chlorhexidine (0.02 to 0.2% drops).

6 0
3 years ago
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