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Lana71 [14]
3 years ago
13

what types of molecules need more help to get through the cell membrane? What helps them get through?

Biology
1 answer:
Slav-nsk [51]3 years ago
7 0
Nonpolar and small polar molecules<span> can pass </span>through the cell membrane<span>, so they diffuse </span>across<span> it in response to concentration gradients. Carbon dioxide and oxygen are two </span>molecules<span> that undergo this simple diffusion </span>through<span> the </span>membrane<span>. The simple diffusion of water is known as osmosis.</span>
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The organic substance making up the cells of all living things is (are) _____. protoplasm cytoplasm tissue organelles
AfilCa [17]
<span>The organic substance making up the cells of all living things is protoplasm.
Whereas cytoplasm, tissue, and organelles definitely do exist in living things, they do not make up the cells of all living things.
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6 0
3 years ago
Plz <br> I need answers to this help due tmrw
MrRissso [65]

vocabulary 1

1. DNA sequences

2. Homologous structures.

3. Paleontologist

4. analogous structures

5. fossils

6. vestigial

7. Comparative embryology

8. Comparative anatomy

vocabulary 2

1. DNA sequences

2. Analogous structures

3. Comparative anatomy

4. Fossils

5. vestigial

6. homologous structures

7. Comparative embryology

8. structure

9. Scientists

Explanation:

1. Human and apes are evolutionarily closely related based on the analysis of their DNA sequences.

2. Wings of bats and birds serve the same function and are analogous structure.

3. Comparative anatomy is the study of the similarities and differences in structures in similar species.

4. Fossils demonstrate that during the evolution of the whale, the whale moved from land to the sea.

5. The human tailbone and appendix are vestigial organs.

6. The homologous structures are structures that are similar in related organisms because they were inherited from the common ancestor.

7. Comparative embryology is the study of similarities and differences in the embryo of different species.

8. The forelimb of all the mammals has basic bone structure.

9. Scientists who find and study fossils are called paleontologists.

8 0
3 years ago
What would happen if a person with sickle cell anemia received regular medical treatment
lyudmila [28]

Answer:

the procedure aims to replace the stem cells in the bone marrow the source of new red blood cells with healthy stem cells from a matching donor

7 0
2 years ago
In which location would the rate of soil erosion most likely be higher than the rate of soil formation?
xz_007 [3.2K]

Answer:

C. A steep slope

Explanation:

Erosion is the removal of the top layer of the earth or the gathering of lose weathered materials from rock surfaces.

Agents of erosion are wind, water, glacier and gravity.

Along a very steep slope, erosion is highly rife and very prevalent to the extent that everything there is washed away to be deposited at the bottom of the slope or where gradient is more gentle.

On a steep slope, materials moves rapidly and gravity is very great. When these factors are coupled with the prevailing conditions in a place, little to no deposition occurs for soil formation.

4 0
3 years ago
More than 90% of measles infections occurs in children under ____ years old.
Lesechka [4]

Answer: More than 90% of measles infections occurs in children under 15 years old.

Hope this helps

6 0
2 years ago
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