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Ede4ka [16]
3 years ago
11

Fill in the blanks below to complete the hypothesis for this lab. It should answer the lab question, “What is the effect of mole

cule size on a molecule’s ability to diffuse across a semipermeable membrane?”
If molecules are small enough, then . . .
Biology
2 answers:
Harman [31]3 years ago
6 0

Answer:

Not sure about this but:

If molecules are small enough, then they will be able to diffuse across a semipermeable membrane easier.

Explanation:

The smaller the molecule, the faster it can go through the small holes in a cell's membrane. If it is too large, it would need to have some sort of a protein or other process like facilitated diffusion to go through the membrane and enter the cell.

hope this helped lol

stepladder [879]3 years ago
5 0

Answer: correct conclusion (“then”): Molecules will diffuse through the membrane

correct reason (“because”): Molecules can pass through the membrane’s tiny openings

Explanation: Edgenuity2020

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List the events of the sodium potassium pump in the correct sequence, starting at the TOP.
marishachu [46]

<u>Answer</u>:

<em>Sodium potassium pump works by following several steps. </em>

<u>Explanation</u>:

<em>1. Carrier protein binds three molecules of Na+ </em>

<em>2. ATP is split, phosphate bonds to carrier. </em>

<em>3. Carrier protein changes shape, and deposits Na on the outside of the cell. </em>

<em>4. Carrier binds two molecules of K </em>

<em>5. Phosphate is released. </em>

<em>6. Potassium is released inside the cell </em>

Sodium -potassium pump is essential to maintain the concentration of sodium and potassium outside and inside the cell respectively.

It is the function of sodium potassium pump to transport sodium out of the cell and potassium inside of the cell against a concentration gradient.

<em>Thus it is an active transport mechanism. </em>

7 0
3 years ago
It took 600 newtons of force to move a car 4 meters. How much work was done?
mart [117]

Answer:

2400 Joules

Explanation:

Work done = force × distance

work done= 600×4

Therefore, work done=2400joules

P.S: the SI unit for work done is JOULES

PLEASE MARK AS BRAINLIEST

5 0
4 years ago
how factors such as blood pressure blood volume blood viscosity resistance disease and exercice affect blood flow
schepotkina [342]

Blood is essential for many organisms, such as humans and animals, for its important function of transporting substances (food, oxygen), vitamins, waste (carbon dioxide), hormones, etc. to all tissues and cells of the body.

1) Blood volume

If the blood volume increases ==> the blood flow increases.

2) Viscosity of blood

If we have an increase in blood viscosity ==> we have a decrease in blood flow

3) Peripheral Resistance

If there is an increase in peripheral resistance ==> the blood flow decreases

4) Diameter of blood vessels

If we have an increase in diameter of

blood vessels ==> decreased peripheral resistance ==> increased blood flow

5) Blood pressure

If the blood pressure increases ==> the blood flow increases.

6) In case of diseases

In the case of atherosclerosis or acute coronary syndrome ==> blood flow decreases.

7) Physical excercises:

During physical exercises ==> the heart rate increases ==> the blood flow increases.

3 0
3 years ago
In the United States, approximately how much water is used for
Maurinko [17]

Answer:

75%

Explanation:

The real answer is 80% and 75% is closest so uhm yea

6 0
3 years ago
When the figure skater had her arms out, she was spinning slowly. The more she pulled her limbs in, the faster she spun. Why did
nasty-shy [4]

Answer:  She spun faster because her mass was closer to her center of rotation. The rate of spin increased to conserve angular momentum.

Explanation:  plato answer

5 0
2 years ago
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