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4 years ago

Which comparisons of Trial A (no immunity) and

Biology

1 answer:

VashaNatasha [74]4 years ago

5 0

Answer:

Explanation:

In trial A, people have no immunity so there are more chances of infection and in trial C, only 50% of people have immunity so chances of infection are less, so infection will spread faster in trial A than trial C.

If compared, trial C will have less infected people than trial A because people in trial A has no immunity and people in trial C have 50% of immunity, so only fewer people will get infected even after six point of contact.

As percentage of immune people (trial C) is 50, so there are equal chances of immunity and non-immunity. there are three reasons of infection that include source, susceptible person and transmission. source and susceptible person can be the reason of infection in some non-immune people but the transmission reason can vary. so, there is probability that three nonimmune people lie under transmission reason and are not coming in contact with infected people, medical equipment or environment, that causes infection and those three people are not getting infected.

Hence, the correct options are 1, 3 and 4.

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You made a "cell" using dialysis tubing and a concentrated sugar solution tinted red. You then placed the cell in distilled wate

Mrrafil [7]

Answer:

When the cell has 0% sucrose I expect the cell to stay the same.

Explanation:

First of all, this question should not be confused for the statement "When the "cell" has 0% sucrose, did you expect the cell to have gained water, lost water, or stay the same. In this case, the correct answer would have been; gained water.

But, in this question, we are asked what happens to the cells at 0% sucrose concentration. At 0% (no solute) concentration, there is no net movement of water or solute into or out of the cell, because the cell is isotonic to the external environment (distilled water). Osmosis, a special kind of diffusion, is the movement of water, from areas of lower solute concentration to area of higher solute concentration, or from areas of higher water concentration to areas of lower water concentration through a semi-permeable membrane. If the water moves into the cells (hypertonic cells), then the cell gains water and increases in size, but if the cell loses water (hypotonic cell), then it reduces in size

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4 years ago

As your muscles contract during activity, more blood is returned to the heart. which variable would be affected and what would b

timama [110]

Heart rate. From this site, the two channels of the autonomic nervous system originate the sympathetic and parasympathetic components. The sympathetic components increase heart rate by releasing the neural hormone catecholamines - epinephrine and norepinephrine. These hormones are cardio accelerators. Acceleration of the heart rate is called tachycardia.

6 0

3 years ago

Match each digestive Juice or enzyme to the organ where it performs.

fiasKO [112]

Explanation:

hope it helps

mark me brainliest please

5 0

3 years ago

NEED HELP FAST!

icang [17]

Answer:

C. Bones provide structure and support to the body, while bones move the muscles.

Explanation:

The muscular nor skeletal system send signals to the body. This job belongs to the nervous system.

Muscles cannot offer the same amount of support and structure to the body that the skeletal system can. However, muscles can contract and relax to move.

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7 0

3 years ago

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What function are stomach cells adapted for

Kamila [148]

Answer:

The stomach is J-shaped and it can expand to temporarily store food. Partial digestion of the food takes place here. The churning action of the stomach muscles physically breaks down the food. The stomach releases acids and enzymes for the chemical breakdown of food.

Explanation:

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3 years ago