Transport System QuizVersion en ligne cell membrane examples of transport systems par Sonia L Williams 1 Which type of cell component do all cells contain? Select one or more answers a chloroplasts b cell wall c cell membrane 2 What two examples of small molecules capable of passing through the cell membranes were mentioned in the video? Select one or more answers a nitrogen and oxygen b carbon dioxide and nitrogen c oxygen and carbon dioxide d carbon and oxygen 3 Does simple diffusion move with or against the flow? a with the flow b against the flow 4 What does moving with the flow mean? Select one or more answers a moving against the concentration gradient b moving around the concentration gradient c moving under the concentration gradient d moving with the concentration gradient 5 In passive transport, molecules move from an area of ______ concentration to an area of _______ concentration. Select one or more answers a big;small b low;high c small;big d high;low 6 Some proteins involved in transport systems are called ________. Select one or more answers a transit proteins b transfer proteins c traffic proteins d transport proteins 7 What is a job of transport proteins mentioned in the video? Select one or more answers a help oxygen move across cell membranes b help small molecules move against concentration gradients c help large molecules cross cell membranes 8 According to the video, facilitated diffusion is still considered a type of passive transport. Why? *Begin your sentence with, Facilitated diffusion does not require e_ _ _ _ _and molecules move with the f_ _ _ . Written answer 9 Proteins help charged molecules pass through cell membranes. What are the charged molecules called? Select one or more answers a gases b hormones c water d ions 10 What is the name of the simple sugar that is too big to cross the cell membrane by itself? a glucose 11 In active transport, molecules move from an area of low concentraton to an area of high concentration. What is the energy called that powers active transport? a ATP 12 If molecules are moving from an area of low concentration to an area of high concentration, then are the molecules moving with or against the concentration gradient? a against 13 Endocytosis is a type of active transport. Phagocytosis and Pinocytosis are types of endocytosis. When the amoeba surrounded its food, which of the two types of endocytosis occurred? Select one or more answers a active transport b endocytosis c phagocytosis d pinocytosis Explanation 1 Chloroplasts and cell wall exist in plant cell. They do not exist in animal cells. 2 Oxygen and carbon dioxide are atmospheric gases. We breathe in oxygen and breathe out carbon dioxide as a waste. 3 Small molecules are able to enter the cell membrane without any energy, so they move with the flow. 5 In simple diffusion and facilitated diffusion, molecules 'starting point' is the area of greater action and their 'ending point' is the area of lesser action. 6 The word, transport, has several synonyms: carry, send, take, move 10 Glucose needs transport proteins(protein channels) to help pass through cell membranes. 11 ATP is the energy source. 12 Remember, in passive transport, molecules move with the concentration gradient. In active transport, molecules move against the concentration gradient.
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