Podcast
Questions and Answers
Which of the following best describes the movement of molecules in diffusion?
Which of the following best describes the movement of molecules in diffusion?
- Molecules move from a higher to a lower concentration (correct)
- Molecules move from a lower to a higher concentration
- Molecules move from a lower to a higher concentration at all times
- Molecules move across a selectively permeable membrane only
In which scenario would osmosis likely occur?
In which scenario would osmosis likely occur?
- An animal cell in a hypotonic solution
- An animal cell in an isotonic solution
- A plant cell in a hypertonic solution
- A plant cell in a hypotonic solution (correct)
What type of molecule would likely be detected in a Benedict's test if it produces a blue solution?
What type of molecule would likely be detected in a Benedict's test if it produces a blue solution?
- Starch
- Lipids
- Proteins
- Glucose (correct)
Which process involves the movement of molecules against their concentration gradient using energy?
Which process involves the movement of molecules against their concentration gradient using energy?
What is the main function of a biuret test in biology?
What is the main function of a biuret test in biology?
Which statement best represents the result of Benedict's test in food analysis?
Which statement best represents the result of Benedict's test in food analysis?
Which process describes the movement of water molecules across a semi-permeable membrane?
Which process describes the movement of water molecules across a semi-permeable membrane?
A cell is placed in a solution where it starts to shrink. Which type of solution is the cell likely placed in?
A cell is placed in a solution where it starts to shrink. Which type of solution is the cell likely placed in?
During active transport, what is the primary source of energy used by cells to move molecules across the membrane?
During active transport, what is the primary source of energy used by cells to move molecules across the membrane?
Which type of transport requires carrier proteins to facilitate the movement of molecules across a membrane?
Which type of transport requires carrier proteins to facilitate the movement of molecules across a membrane?
