2.3 Bio Passive Transport

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2.3 Passive Transport

Multiple Choice

_______ regulates what enters and leaves a cell.  

• Cell Membrane
• Nucleus
• Mitochondria
• Cytoplasm

Multiple Choice

What is diffusion?

• The movement of particles from low conc. to high conc. in a given space
• The movement of particles from high conc. to low conc. in a given space

Multiple Choice

Which type of passive transport uses helper proteins to help molecules pass through the membrane?

• Diffusion
• Facilitated diffusion
• Osmosis
• All of the above

Multiple Choice

Which characteristic of a cell membrane allows it to control materials entering and leaving a cell?

• A cell membrane is surrounded by fluid.

• A cell membrane is semi-permeable.

• A cell membrane holds organelles in place.

• A cell membrane is found in plant and animal cells.

Multiple Choice

Passive Transport

• Does require cell energy

• Does NOT require cell energy

Multiple Choice

During osmosis

• water moves from high to low concentration
• large or oddly shaped molecules move across a cell membrane
• water moves when energy is used
• proteins are built

Multiple Choice

Ideally, your cells should be in a(n) _______ solution

• Hypertonic
• Hypotonic
• Isotonic
• Cola

Multiple Choice

Osmosis

• diffusion of water molecules through a semi-permeable mebrane from an area of low concentration to an area of high concentration
• the diffusion of particles from an area of high concentration to an area of low concentration
• diffusion of water molecules through a semi-permeable membrane from an area of high concentration to an area of low concentration
• the diffusion of particles from an area of low concentration to an area of high concentration

Multiple Choice

• hypotonic

• hypertonic

• isotonic