Biology, Daily Quiz, O level biologyMovement of Substances Quiz July 1, 2020 / 0 Comments /10 83 Movement of Substances 1 / 10Which statements about diffusion are correct?1 Molecules move at random.2 Molecules move down a concentration gradient.3 Molecules may move through a partially permeable membrane 1, 2 and 3 2 and 3 only 1 and 2 only 1 and 3 only 2 / 10The small intestine of a person contains a lower concentration of glucose than is present in the blood.The cells of the villi absorb glucose.By which process is the glucose absorbed? by diffusion down the concentration gradient by active transport down the concentration gradient by active transport against the concentration gradient by diffusion against the concentration gradient 3 / 10The diagram represents an apparatus used to investigate osmosis.Which molecules will move across the partially permeable membrane and which change will occur in the solution level? molecules: water, solution level: fall molecules: starch, solution level: fall molecules: starch, solution level: rise molecules: water, solution level: rise 4 / 10 Which statement is always correct when oxygen is diffusing out of a plant cell? The concentration of carbon dioxide is higher outside the cell than inside. The concentration of oxygen is higher inside the cell than outside. The concentration of carbon dioxide is higher inside the cell than outside. The concentration of oxygen is higher outside the cell than inside. 5 / 10The diagram shows the net movement of water by osmosis between four adjacent cells.Which cell has the highest water potential? B A C D 6 / 10The cell wall of a plant cell is removed using an enzyme.What would happen if this cell is then placed in distilled water? The cell would become smaller as water passes out. The cell would become smaller as water passes out. It would take longer for the cell to become turgid. Proteins in the cytoplasm would leave through the cell membrane 7 / 10What describes the diffusion of molecules? movement from a region of their lower concentration to a region of their higher concentration up a concentration gradient movement from a region of their lower concentration to a region of their higher concentration down a concentration gradient movement from a region of their higher concentration to a region of their lower concentration down a concentration gradient movement from a region of their higher concentration to a region of their lower concentration up a concentration gradient 8 / 10Which movement of a substance in plants is an energy-consuming process? absorption of carbon dioxide by a palisade cell nitrate uptake by root hair cells nitrate uptake by root hair cells loss of water into the air spaces of a leaf 9 / 10The diagram shows three plant cells labelled P, Q and R. The arrows show the direction of water movement by osmosis. What is the correct order of water potential in the cells, from the highest to the lowest? highest:R, middle:P, lowest:Q highest:P, middle:Q, lowest:R highest:P, middle:R, lowest:Q highest:Q, middle:P, lowest:R 10 / 10How do plants absorb nitrate ions by active transport? down a concentration gradient without using energy down a concentration gradient using energy against a concentration gradient without using energy against a concentration gradient using energy Your score isThe average score is 19% LinkedIn Facebook Twitter VKontakte 0% Restart quiz Send feedback
