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Questions and Answers
Facilitated diffusion is the net passive movement of particles from a region of higher concentration to a region of lower concentration.
Facilitated diffusion is the net passive movement of particles from a region of higher concentration to a region of lower concentration.
True (A)
Osmosis is the diffusion of gases through a semipermeable membrane.
Osmosis is the diffusion of gases through a semipermeable membrane.
False (B)
Active transport involves the movement of particles from a region of lower concentration to a region of higher concentration.
Active transport involves the movement of particles from a region of lower concentration to a region of higher concentration.
True (A)
Simple diffusion occurs when particles move across a membrane through specific carrier proteins.
Simple diffusion occurs when particles move across a membrane through specific carrier proteins.
Facilitated diffusion allows multiple molecules to pass through a carrier protein at the same time.
Facilitated diffusion allows multiple molecules to pass through a carrier protein at the same time.
Gas exchange for photosynthesis involves the movement of oxygen from the air to the leaf.
Gas exchange for photosynthesis involves the movement of oxygen from the air to the leaf.
High temperatures increase the speed of facilitated diffusion.
High temperatures increase the speed of facilitated diffusion.
Particles with small size, specific shape, and negative charge are more likely to be transported via facilitated diffusion.
Particles with small size, specific shape, and negative charge are more likely to be transported via facilitated diffusion.
Active transport is driven by an input of energy to move particles down their concentration gradient.
Active transport is driven by an input of energy to move particles down their concentration gradient.
Diffusion stops once the concentration of substances is uniform throughout.
Diffusion stops once the concentration of substances is uniform throughout.
