Question

a type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. the ions move through the transport protein, and into the cell. these transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. this transport protein would best be described as ______. a carrier protein a symporter a pump a channel 55. part a a type of transport protein found in the plasma membrane of cells lining the inside of the intestine allows sodium ions to diffuse down their concentration gradient. the ions move through the transport protein, and into the cell. these transport proteins will use the kinetic energy of the diffusing sodium ions to bring glucose into the cells as well. which of the following would stop transport of glucose through this transport protein? stopping the activity of the sodium potassium pump. lowering the energy of activation. increasing the concentration of glucose outside of the cell. increasing the number of digestive enzymes in the digestive tract. 56. part a phagocytosis is used by the cells to secrete intracellular substances to the outside of the cell. true false 57. part a peroxisomes ______. sometimes function as secretory vesicles function to digest particles ingested by endocytosis are functionally the same as lysosomes are able to detoxify substances by enzymatic action 58. part a which of the following is not a function of lysosomes? breaking down bone to release calcium ions into the blood help in the formation of cell membranes digesting particles taken in by endocytosis degrading worn - out or nonfunctional organelles

Explanation:

1. A symporter is a type of cotransporter that moves two substances in the same direction. In this case, the transport protein moves sodium ions down their concentration gradient and uses that energy to move glucose into the cell, which is characteristic of a symporter. A carrier protein is a more general term, a pump uses energy to move substances against their gradient, and a channel allows passive movement of ions or small molecules.
2. The sodium - potassium pump maintains the sodium concentration gradient. Stopping its activity would disrupt the gradient that the symporter uses to transport glucose. Lowering the activation energy is related to enzyme - catalyzed reactions and not this transport process. Increasing glucose outside the cell would not stop the transport via the symporter. Increasing digestive enzymes in the tract has no direct relation to this cellular transport.
3. Phagocytosis is the process by which cells engulf solid particles, not secrete intracellular substances. Secretion is typically done through exocytosis.
4. Peroxisomes are organelles that can detoxify substances by enzymatic action, such as catalase breaking down hydrogen peroxide. They are not secretory vesicles, lysosomes are responsible for digesting particles ingested by endocytosis and are different from peroxisomes in function.
5. Lysosomes are involved in digesting particles taken in by endocytosis, degrading worn - out or nonfunctional organelles, and also play a role in the turnover of cell membranes. Breaking down bone to release calcium ions into the blood is mainly the function of osteoclasts and not lysosomes.

Answer:

1. B. a symporter
2. A. Stopping the activity of the sodium potassium pump.
3. B. False
4. D. are able to detoxify substances by enzymatic action
5. A. breaking down bone to release calcium ions into the blood