Cellular Transport Test

CELLULAR TRANSPORT TEST Match the definition on the left with the term on the right. 1. C release of wastes or cell products from inside to outside a cell 2. D diffusion of water molecules through a selectively permeable membrane 3. E loss of water from a cell resulting in a drop in turgor pressure in plants. Plasma membrane detaches from the cell wall 4. B continuous movement of particles but no overall change in concentration 5. A movement of particles from an area of higher concentration to one of lower concentration a. diffusion b. equilibrium c. exocytosis d. osmosis e. plasmolysis In the space at the left, write true if the statement is true. If the statement is false, change the italicized term to make the statement true. Write this answer in the blank provided. Hypotonic 7. A solution in which the concentration of dissolved substances is lower than the concentration inside a cell is hypertonic. Turgid Pressure 8. The internal pressure of a plant cell is called turgor pressure. Active Transport 9. In passive transport, the movement of particles across a membrane requires energy. True 10. Endocytosis is a process by which a cell membrane surrounds and takes in material from the environment. Facilitated Diffusion 11. The passive transport of material across a membrane by means of transport proteins is called activated diffusion. True 12. A membrane that allows only some materials to pass through shows selective permeability. Choose the word or phrase that best completes the statement or answers the question. 1. The structure most responsible for maintaining cell homeostasis is the cytoplasm cell wall mitochondria cell membrane 2. A cell membrane is made up of a(n) cholesterol layer enzyme layer lipid bilayer protein layer 3. Which of the following is not a form of passive transport? facilitated diffusion diffusion endocytosis osmosis 4. Diffusion continues until equilibrium is reached turgor pressure is reached one side has more 5. If a cell is placed in salt water, water leaves the cell by osmosis diffusion active transport phagocytosis 6. If it is not watered, a tulip plant wilts because it increases active transport loses turgor pressure increases turgor pressure 7. A cell moves particles from a region of lesser concentration to a region of greater concentration by 3. Plant cell after being over-watered. a. Water rushes into the plant cell’s vacuole. Is this diffusion or osmosis? Osmosis b. Is this passive or active transport? Passive c. What is the force called that causes water to rush into the plant cell? Turgor pressure d. Does turgor pressure increase or decrease? Increase e. Is the plant cell in a hypertonic, hypotonic, or isotonic environment? Hypertonic f. What will more likely occur to the cell if this continues, plasmolysis or cytolysis? Cytolysis 4. Plant cell after not being watered lately, so it has begun to wilt: a. Which way will the water go? Into the vacuole, or out of the vacuole? Out of the vacuole b. By what process will the water move? Osmosis c. Does turgor pressure increase or decrease? Decrease d. Is the plant cell in a hypertonic, hypotonic, or isotonic environment? Hypotonic e. What will more likely occur to the cell if this continues, cytolysis or plasmolysis? Plasmolysis 5. An amoeba engulfs a particle of food. a. Does this require energy? Yes b. Is this active or passive transport? Active c. Is this endocytosis or exocytosis? Endocytosis 5. An amoeba expels waste. a. Does this require energy? Yes b. Is this active or passive transport? Active c. Is this endocytosis or exocytosis? Exocytosis 6. A cell surrounded by blood: a. Will water move from the blood to the cell, or from the cell to the blood? From the blood to the cell b. Which has the higher concentration of water, the cell or the blood? Blood c. Does this require energy? No d. Is this active or passive transport? Passive e. Is this diffusion or osmosis? Diffusion f. Does the blood cause a hypotonic or hypertonic environment for the cell? Hypertonic