Cell Transport

________________ regulates what enters and leaves a cell.

• Cell membrane

• Nucleus

• Mitochondria

• Cytoplasm

A cell membrane is ____________, allowing certain substances through while not others.

• permeable

• semipermeable.

• Non-permeable

• Unpliable

The phospholipid bilayer is made up of ​​ (a)   (water-loving) heads and ​ ​ (b)   (water-fearing) tails.

• hydrophilic
• hydrophobic
• hypertonic
• hypotonic

​ ​ (a)   does NOT require energy.

• passive transport
• active transport
• endocystosis
• exocytocisi

​ ​ (a)   DOES require energy.

• active transport
• diffusion
• osmosis
• facilitated diffusion

What is DIFFUSION? Draw it!

Simple diffusion is the movement of ​ (a)   particles ​ (b)   the cell membrane, from an area of ​ (c)   concentration to an area of ​ (d)   concentration.

• small
• across
• high
• low

Facilitated diffusion is the diffusion of larger particles or particles with a charge through __________.

• carbohydrates

• nucleic acids

• transport proteins

• mitochondria

The diffusion of water through a permeable membrane is called ________.

• simple diffusion

• active transport

• facilitated diffusion

• osmosis

Which of the following CANNOT diffuse across the phospholipid bilayer?

• oxygen, O2

• carbon dioxide, CO2

• glucose

• water, H2O

Tags

NGSS.HS-LS2-3