Receptors located within the cell are mostly a. protein b. glucoprotein c. gluco
ID: 200291 • Letter: R
Question
Receptors located within the cell are mostly a. protein b. glucoprotein c. glucose d. chitin S. e. none of the above When all the protein carriers are a. adapted. b. unsaturated. 6. used up, the carriers are said to be c. saturated. d. consumed. 7. Which of these is not correct about active transport? a. no energy is required b. movement of molecules is against the concentrations gradient c. movement of molecules is due to the concentration gradients Passive transport of molecules is determined by the concentrations gradient of such molecules. a. true 3. b. false The proteins that constantly transport sodium ions outside the membrane is called a. membrane pump. 9. b. calcium-potassium pump c. sodium-potassium pump. d. glucose-potassium pump. e. Protein-potassium pump. 10. The process in the question above gets its energy from a. ADP b. ACT c. PTA d. ATP e. TPAExplanation / Answer
Answer 5.
Inside the cell, receptors are located in the cytoplasm and on the nuclear wall. Some receptors are present on surface of organelles also. All these receptors are proteins.
So, the correct answer is option ‘a’.
Answer 6.
Such carriers are said to be saturated because they cannot take up more protein. So, the correct answer is option ‘c’.
Answer 7.
Active transport requires energy, so, option ‘a’ is incorrect. In active transport, the movement of molecules is against the concentration gradient with the help of energy. So, option ‘b’ is the correct answer.
Answer 8.
This statement is true. Passive transport is movement of molecule from a region of high concentration to a region of low concentration without the use of energy or ATP. So, the concentration gradient determines the direction of flow of molecules in passive transport.
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