Answer:
Explanation:
The main function of the plasma membrane is to protect the cell from its surroundings. Made of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules it also regulates the movement of substances in and out of cells. Plasma membranes must be very flexible in order to allow certain cells, such as red blood cells and white blood cells, to change shape as they pass through narrow capillaries. Membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors, which then trigger intracellular responses. Some viruses, such as Human Immunodeficiency Virus (HIV), can intercept these receptors to get into the cells, causing infections.
Answer:
it okay
Explanation:
can you help me with this question According to Frost in his poem "The Road Not Taken," what kind of difference did taking one road over another road make? A. It made a good difference, B. It made a bad diference, c. Frost does not say
Answer:
(of a substance) become concentrated inside the bodies of living things.
Explanation:
Answer: The answer is charge. Protons have charge. Neutrons don't.
1 A. Because every cell has a cell membrane and Cell X is a plant cell and hence is no exception.
2. A. Carbohydrates are broken down in respiration to release energy for the metabolic life processes.
3. A. Organs are made up of tissues. Organ systems are made up of organs. Tissues are made up of cells. Cells are made up of molecules.
