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victus00 [196]
3 years ago
11

Which definition is the best for “semipermeable membrane

Biology
2 answers:
blondinia [14]3 years ago
7 0

Answer: A semi-permeable membrane is that which only allows certain

               substances to pass through.

garik1379 [7]3 years ago
7 0

Answer: A semipermeable membrane is a layer that only certain molecules can pass through. Semipermeable membranes can be both biological and artificial. Artificial semipermeable membranes include a variety of material designed for the purposes of filtration, such as those used in reverse osmosis, which only allow water to pass. The biological membranes of cells are created by two sheets of phospholipid, which contain a lipid tail attached to a polar head. The tail regions of each sheet cluster together, while the heads of the molecules point outward. The polar heads point both outward toward the environment of the cell and inward toward the cytosol. In this way, a hydrophobic region of lipid tails separates the two bodies of solution. This can be seen in the image below.

Explanation: sorry if its too much wording i tried to shorten it as much as possible

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Picture represents an oxygen atom how many protons does this atom have
alisha [4.7K]

Answer: Oxygen atom has 8 Protons

Explanation:

Oxygen atom (O) has an atomic number of 8, and a mass number of 16.

Recall that atomic number of any element is equal to the number of protons in its electronic shell, hence, the number of protons in oxygen atom is also 8

7 0
3 years ago
What environment would be least likely to grow bacteria and why? Here are your choices:
storchak [24]

Answer:

3.

Explanation:

A classroom desktop is the least likely to grow bacteria because it is a relatively clean surface. The armpit of a human and a warm freshwater mud puddle are a more suitable habitat for bacteria because they are warm, and provide a relatively safe environment for them

3 0
3 years ago
Type the correct answer in the box.
Oduvanchick [21]

Answer:

2,000

Explanation:

4 kilograms will go in the tank in 1 second. So for 8,000 kilograms of water you divide 8,000 by 4. Which gives you 2,000. Got it right on Plato as well.

3 0
3 years ago
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answer true or false for each question. no rediculous answers, I will mark brainliest for whichever one is correct
kompoz [17]

Answer:

1. True

2. True

3. False, they have 46

4. False, they inherit traits from both parents

5. True

6. False, rice has 12 pairs of chromsomes and flies have 4 so not all orangisms have the same number of chromosomes

7. True (not too confident with this one though)

8. False, a body cell has 46 while gametes have 23

9. False

10. True

Explanation:

7 0
3 years ago
What events occur during meiosis I and meiosis II?
Nadya [2.5K]

Answer:

Homologous pairs of cells are present in meiosis I and separate into chromosomes before meiosis II. In meiosis II, these chromosomes are further separated into sister chromatids. Meiosis I includes crossing over or recombination of genetic material between chromosome pairs, while meiosis II does not.

Explanation:

Brainliest please?

5 0
3 years ago
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