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damaskus [11]
3 years ago
9

An african american couple is undergoing genetic counseling to determine the likelihood of producing children with a recessively

genetic blood condition. the genetic tests reveal that the father carries the trait to produce abnormal hemoglobin, hbs, which causes crystallization in rbcs and deforms their shape when o2 is low. this condition causes painful crises and multiple infarcts and is termed
Biology
1 answer:
Leona [35]3 years ago
5 0
For the answer to the question above, they are suffering from <span><u>"Sickle cell anemia"</u>. This is </span>a group of disorders that affects hemoglobin, the molecule in red blood cells that delivers oxygen to cells throughout the body. People with this disorder have atypical hemoglobin molecules called hemoglobin S, which can distort red blood cells into a sickle, or crescent, shape.

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Biomagnification is the __________________of substances,often harmful,as they move up the food chain.​
gregori [183]

Answer:

build up

Explanation:

b. accumulating increased concentration

5 0
2 years ago
The electrons in the outermost energy level are called........?
LenKa [72]

Answer:

Valence Electrons

Explanation:

4 0
3 years ago
Read 2 more answers
Ouabain is a specific inhibitor of the active transport of sodium ions out of the cell and is therefore a valuable tool in studi
Kay [80]

Answer:

1. Part A: No

2. Part B: Yes

3: Part C : Yes

4: Part D : No

Explanation:

1) Part A: Facilitated diffusion of glucose into a muscle cell:

No; sodium ion co - transport is required for active transport of glucose but not for facilitated diffusion of glucose

2) Part B: Active transport of dietary phenylalanine across the intestinal mucosa:

Yes; co - transport of sodium ions drives the inward movement of amino acids and can only occur if sodium ions are actively pumped back out again.

3) Part C: Uptake of potassium ions by red blood cells:

Yes; uptake of potassium ions can occur only via a pump that couples the inward pumping of potassium ions to the outward pumping of sodium ions.

4) Part D: Active uptake of lactose by the bacteria in your intestine

No; active uptake of sugars and amino acids in bacteria is driven by a proton gradient.

3 0
2 years ago
The Sun appears to move across the sky each day. What causes this?
Novay_Z [31]

Answer:

The earth is turning.

Explanation:

when the earth turns it causes the sun to move from one part of the sky to the other. The earth revolves around the sun. So when it become night time for example, the sun is just on the other side of the earth.

4 0
3 years ago
A population of small fish lives in a lake with a sandy bottom. the major predator of these fish is a wading bird that hunts by
nata0808 [166]
The proportion of mottled fish will increase over time because of the construction company that dumps a load of gravel in the bottom of the lake which give it a mottled appearance that made the mottled fish invisible by their major predator which is the wading bird that hunts them by sight.

 





3 0
3 years ago
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