cell transport test

Which way will the small molecules if no energy is used?

• Out of the cell

• Into the cell

• They won't move at all

A cell will __________________ in a hypotonic solution.

• swell and perhaps burst (lyse)
• shrink
• the size of the cell will not change
• the size of the cell will change from large to small and from small to large

Which of the following is true of active transport? (Select all that apply.)

• Requires energy

• Only involves the movement of gasses

• Low to High Concentration

• Involves larger molecules, like glucose (sugar) and proteins

What does selectively-permeable mean?

• The cell controls what passes in and out of the cell
• Nothing gets through
• The cell lets only large substances through

In passive diffusion, substances always move...

• from an area of higher concentration to an area of lower concentration

• from an area with more of the molecules to an area with fewer of the molecules

• from an area of lower concentration to an area of higher concentration

• from an area with fewer of the molecules to an area with more of the molecules

Active transport requires ______, moves materials from __________________, and goes _______ the concentration gradient.

• No energy, low to high, against
• ATP, high to low, with
• ATP, low to high, with
• ATP, low to high, against

When both inside and outside of a cell have the same amount of water it is said that the cell has reached a state of ___________.

• osmosis
• equilibrium
• diffusion
• hypertonic

What is the definition of OSMOSIS?

• Diffusion of water through a selectively permeable membrane

• Molecular structure that surrounds the cell and controls what enters and leaves the cell

• Movement of molecules across the cell membrane against the concentration gradient

• Movement of molecules across the cell membrane from an area of high concentration to low concentration

What is the definition of ACTIVE TRANSPORT?

• Movement of molecules across the cell membrane against the concentration gradient

• Diffusion of water through a selectively permeable membrane

• Molecular structure that surrounds the cell and controls what enters and leaves the cell

• Movement of molecules across the cell membrane from an area of high concentration to low concentration

What is the definition of FACILITATED DIFFUSION?

• Movement of molecules across the cell membrane from an area of high concentration to low concentration

• Diffusion of water through a selectively permeable membrane

• Movement of molecules across the cell membrane against the concentration gradient

• Molecular structure that surrounds the cell and controls what enters and leaves the cell