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11111nata11111 [884]
3 years ago
11

14) Mammalian blood contains the equivalent of 0.15 M NaCl. Seawater contains the equivalent of 0.45 M NaCl. What will happen if

red blood cells are transferred to seawater? A) NaCl will be exported from the red blood cells by facilitated diffusion. B) The blood cells will take up water, swell, and eventually burst. C) NaCl will passively diffuse into the red blood cells. D) Water will leave the cells, causing them to shrivel and collapse. E) The blood cells will expend ATP for active transport of NaCl into the cytoplasm. D;
Biology
2 answers:
slamgirl [31]3 years ago
4 0

Answer:

A) NaCl will be exported from the red blood cells by facilitated diffusion.

Softa [21]3 years ago
3 0

Answer:

D) Water will leave the cells, causing them to shrivel and collapse.

Explanation:

In the situation described in the question above, if the red blood cells were transferred to seawater, the water would come out of the cells by osmosis, causing those cells to shrivel and collapse. This would occur because the concentration of NaCl in seawater is greater than the concentration of NaCl within the cell, so in an attempt to balance the cell would spill the water from within it to balance NaCl concentrations. As a result, the cell would wither and collapse.

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Answer: All the statements of the question are correct.

Sickle cell disease is an autosomal recessive disorder that is characterized by formation of defective hemoglobin protein, which results in sickle shaped RBC ( red blood cell).

This disease is caused by mutation in the gene that is responsible for the protein hemoglobin ( which transport oxygen throughout body).

It is inherited by the offspring when both the mutated copy of genes ( one from each parent) are passed to him.

Carriers of the disease exhibit increased resistance to malarial parasites by controlling the level of free haem in the blood ( through enzyme heme oxygenase that produces a toxic carbon monoxide gas). The resistance thus developed, is a mutation.

Therefore, all the statements in the given question are correct.

5 0
3 years ago
Carlos is studying the characteristics of a fundamental force. The force is sometimes repulsive and sometimes attractive. Which
aleksklad [387]
The answer to this question would be: <span>b.electromagnetic or weak nuclear
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The electromagnetic force can be repulsive or attractive because it was influenced by the magnetic charge. The same charge (positive with positive) will be repulsive but different charge will be attractive(negative and negative). The gravitational force will always be attractive, not repulsive. 
Weak nuclear can do both like electromagnetic force.

6 0
3 years ago
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MaRussiya [10]

Answer:

Unhealthy high carbohydrate foods include pancakes, soft pretzels, bread products, ready to eat cereals, milkshakes, ice-cream, cereal bars, cake, pies, muffins, sweetened canned fruits, sugary drinks, fruit juices, corn chips, potato chips, and candies. Healthy high carbohydrate foods includes whole grains, beans, vegetables, fresh fruits, nuts, and seeds. The daily value (%DV) for carbohydrates is 300 grams.

High fat foods are eggs,Avacado ,fish,Faith products..

High protein foods are flesh of chicken,fish,goat,etc & Dairy products

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7 0
3 years ago
Individuals with glucose-6-phosphate dehydrogenase deficiency have increased resistance to malaria because the parasite does not
Alexus [3.1K]

Individuals with glucose-6-phosphate dehydrogenase deficiency have increased resistance to malaria because the parasite does not survive well in cells with oxidative stress.

<h3>What is the link between G6P deficiency and malaria?</h3>
  • Glucose-6-phosphate dehydrogenase (G6PD) deficiency is an X-linked recessive disorder.
  • G6PD protects cells from oxidative damage especially the RBCs whose main function is to carry oxygen.
  • Mutation in the gene results in G6PD deficiency leading to oxidative stress which can lead to anemia (iron deficiency) as there is breakdown of RBCs.
  • However, G6PD deficiency is quite common in parts of Africa, Middle East, and South Asia, which are the regions of high malaria endemism.
  • This is due to natural selection in which G6PD deficiency is not eliminated from the population as it can protect people from malaria infection.
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7 0
1 year ago
15
s344n2d4d5 [400]

OPTIONS:

a. When there are just two other people at the party.

b. When everyone is wearing a nametag.

c. When there are more than 50 people attending the same party.

d. When the need for help from the person who is having a heart attack is very clear

Answer:

c. When there are more than 50 people attending the same party.

Explanation:

Bystander effect is a term used in social psychology to describe the tendency of an individual to intervene in the event of an emergency to offer help to the person needing it, when others are present at the scene of the emergency.

In the case of an emergency just like the scenario stated in the question, where someone develops a heart attack at a dance party, if the party has more people, the slimmer the chance of the person getting help from any of the 50 people at the party, as the presence of others would tend to discourage the any individual from attempting to help the victim having the heart attack.

The situation that would more likely show the bystander intervention effect is <em>"c. When there are more than 50 people attending the same party."</em>

5 0
3 years ago
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