Answer:
<em>B: The drug is a small charged molecule</em>
Explanation:
Substances can passively diffuse in and out of the cell via the cell membrane in two ways;
- Simple diffusion
- Facilitated diffusion
The cell membrane allows small molecules or ions to freely diffuse across it in response to concentration difference between the inner and outer parts of the cell membrane. This is known as simple diffusion.
In facilitated diffusion, special proteins in the cell membrane, known as channel/carrier proteins binds with molecules and facilitates their diffusion across the cell membrane by carrying them through special channels in the membrane.
Hence, to support the alternative hypothesis that the new drug will exhibit simple diffusion across the plasma membrane, the drug should be a small charged molecule.
<em>Correct option: B</em>
The cytoplasm contains organelles. The organelles in this list surrounded by the cytoplasm would be the endoplasmic reticulum, lysosomes, and vacuoles. The cell wall and cell membrane are outside the cytoplasm. The nucleus would also be considered in the cytoplasm. If it's talking about a human cell, then chloroplasts would not be in the cytoplasm. Only in plant cells.
Answer: B/C/E/F and possible A if its talking about a <u>plant cell</u>
The phospholipid bilayer is the cell membrane of the cell so the only answer choice that makes any sense is the first one - The balance of ions inside a cell will be disrupted and proteins couldleak out because the phospholipid bilayer forms the cell membrane.
When temperature goes up, feedback inhibition caused the body to sweat, cools you in as evaporating. When body gets cold, it will stopped sweating, and starting to shiver to generate heat
hope this helps
