Cell Transport

Which biomolecule helps LARGE molecules cross the membrane?

• phospholipids

• carbohydrates

• nucleic acids

• proteins

How does the cell membrane help maintain homeostasis in each cell?

• The cell membrane allows all substances to pass through freely

• The cell membrane controls the movement of substances in and out of the cell

• The cell membrane provides energy for the cell

• The cell membrane produces proteins necessary for cell function

Tags

NGSS.HS-LS1-3

What happens during osmosis?

• Transfer of energy from one place to another
• Movement of small molecules from high concentration to low concentration

• Movement of water molecules from an area of high water concentration to an area of low water concentration

• Process of breaking down food into simpler substances

Which TWO of the following can be used to identify ACTIVE transport?

• Movement of molecules from high to low concentration
• Movement of molecules from low to high concentration
• Does not require energy
• Requires energy (ATP!)

Passive transport is called "passive" because it occurs WITHOUT

• cause.
• energy.
• a concentration gradient.
• a cell wall.

Osmosis is the diffusion of _____ across a membrane

• glucose
• NaCl
• proteins
• water

An animal cell placed in a solution with higher salt will:

• Shrink
• Swell
• Stay the same

Tags

NGSS.HS-LS1-3

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

Identify the following structure

• Phospholipid

• Cell

• Cell membrane

• Protein

What is the name of 'B' found on the structure below

• Protein

• Lipic bilayer

• Phosphate hydrophilic heads

• Lipid hydrophobic heads