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Transcript
Name: _______________________ Period: ______ Cells and Diffusion 1. The fact that large numbers of mitochondria are observed in the tubule cells of nephrons suggests that the nephron is involved in the process of a. active transport c. osmosis b. passive transport d. diffusion 2. Water and minerals move from the soil into a plant by the process of a. diffusion, only c. passive transport and hydrolysis b. active transport, only d. both diffusion and active transport 3. Red blood cells contain a higher concentration of potassium than the surrounding blood plasma does. This higher concentration is maintained by the process of a. cyclosis c. simple diffusion b. osmosis d. active transport 4. The arrows in the diagrams below represent the direction of a certain type of molecule through the cell membrane of two different cells. The dots represent the relative concentrations of this molecule. Which processes are illustrated in the diagram? a. phagocytosis and diffusion c. active transport and diffusion b. pinocytosis and osmosis d. dehydration and circulation 5. After a cookie has been digested, glucose molecule enter the bloodstream by the process of a. phagocytosis c. ingestion b. diffusion d. pinocytosis 6. A root hair cell may continue to absorb minerals even though the cytoplasmic concentration of these minerals is greater inside the cell than in the soil. This absorption is accomplished chiefly as a result of a. passive transport c. diffusion b. active transport d. osmosis 7. Which process requires cellular energy? a. Diffusion c. active transport b. Passive transport d. osmosis 8. Hydra remove nitrogenous wastes from their cells mainly by a. diffusion into their bloodstream b. diffusion into their watery environment c. active transport into their excretory tubules d. active transport into their respiratory tubes 9. The diagram below shows the same type of molecules in area A and area B. With the passage of time, some molecules move from area A to area B. This movement is the result of the process of a. Phagocytosis c. diffusion b. Pinocytosis d. cyclosis 10. Freshwater protozoans excrete ammonia and mineral salts by means of a. diffusion through the cell membrane b. small vacuoles released through the cell membrane c. small tubes leading from the cytoplasm to openings in the cell membrane d. contraction of food vacuoles 11. Which process accomplishes the movement of gases illustrated by the arrows in the diagram below? CO2 O2 a. transpiration c. phagocytosis b. diffusion d. osmosis 12. Cyanide is a poison that limits the ability of an animal cell to manufacture ATP. In a cell containing a small amount of cyanide, which process would be least affected? a. movement c. active transport b. cell division d. diffusion 13. In a cell, all organelles work together to carry out a. diffusion c. information storage b. active transport d. metabolic processes 14. The diagram below shoes the relative concentration of molecules inside and outside of a cell. Which statement best describes the general direction of diffusion across the membrane? a. Glucose would diffuse into the cell b. Protein would diffuse out of the cell c. Carbon dioxide would diffuse out of the cell d. Oxygen would diffuse into the cell 15. The diagram below represents the movement of a large molecule across a membrane. Which process is best represented in this diagram? a. active transport c. protein building b. diffusion d. gene manipulation 16. Base your answer to the following question on the diagram below of sugar in a beaker of water. What process accounts for the change shown in lab setup A? _______________________