Movement across membranes

Which is true about active transport?

• It requires energy
• it does not require energy
• It moves substances down the concentration gradient
• it moves material from high to low concentration

Passive transport requires no

• concentration gradients
• osmosis
• motion
• energy

Which of the following substances passes through the plasma membrane   through the process of osmosis?

• glucose
• water
• protein
• sodium

The movement of atoms, ions, or molecules from an area of high concentration to an area of low concentration.

• osmosis

• active transport

• diffusion

• facilitation

Pure water has a water potential of ___.

• 1
• 0
• -1
• 100

What is the approximate sucrose concentration in the potato core?

• .43 M
• .30 M
• 0.0 M
• 1.0 M

Tags

NGSS.HS-PS1-5

When the concentration inside and outside of the cell is equal the solutiom is _________ to the cytosol.

• Isotonic
• Hypertonic
• Hypotonic
• Concentration 

When animal cells are placed in a __________ solution they begin to swell.

• Hypertonic

• Isotonic

• Hypotonic

• Concentrated

Tags

NGSS.HS-LS1-3

A person would never have pure water put into their veins in a hospital because their cells would...

• Shrink/Dehydrate
• Expand

Tags

NGSS.HS-LS1-3

What keeps this plant cell from bursting?

• the cell wall

• the vacuole

• the membrane

• the nucleus