Cell Energy & Transport Pre-test

Which is a way in which exocytosis differs from the pumping of calcium ions against a concentration gradient?

• Exocytosis doesn't differ from the pumping of calcium

• Exocytosis is a form of passive transport

• Exocytosis occurs with the concentration gradient

• Exocytosis requires an expenditure of energy by the cell

Which process is an example of facilitated transport?

• A carrier protein moves water across the cell membrane against the concentration gradient

• The cell membrane wraps around a large molecule and forms a vesicle that takes the molecule into the cytoplasm

• Waste materials from cellular processes are moved to a region of higher concentration outside the cell

• A protein embedded in the cell membrane allows a specific type of protein to move to a region of lower concentration

Which type of cellular transport requires a cell to use energy?

• facilitated transport

• active transport

• diffusion

• osmosis

A student set up the following investigation. An artificial membrane separates two fluid-filled compartments. This membrane is permeable to water but the impermeable to sucrose. Both compartments initially hold the same amount of fluid, which consists of sucrose dissolved in water. The fluid in compartment A is 20% sucrose solution. The fluid compartment B is a 35% sucrose solution.

Which prediction is correct?

• Water will move from compartment A to compartment B by osmosis

• Sucrose will move from compartment A to compartment B by diffusion

• Water will move from compartment B to compartment A by osmosis

• Sucrose will move from compartment B to compartment A by diffusion

Which substance is a product of cellular respiration?

• ADP

• Glucose

• Oxygen

• Water

Which is the correct sequence of events in cellular respiration?

• Electron transport- Krebs cycle- glycolysis

• Glycolysis-Krebs cycle- electron transport

• Krebs cycle- electron transport- glycolysis

• Krebs cycle- glycolysis- electron transport

Which of these happens during the Calvin cycle?

• the release of oxygen

• the formation of glucose

• the absorption of solar energy

• the splitting of water molecules

Which is both a reactant of photosynthesis and a product of cellular respiration?

• glucose

• water

• sunlight

• oxygen