Cellular Transport Honors Bio Practice

Which is NOT found in the cell membrane?

• carbohydrates

• proteins

• lipids

• nucleic acids

In the diagram B represents ______________ which are _____________

• phosphate heads, hydrophilic

• phosphate heads, hydrophobic

• fatty acid tails, hydrophilic

• fatty acid tails, hydrophobic

How do materials pass through the membrane in simple diffusion vs. facilitated diffusion?

• in simple diffusion they use the protein channels and in facilitated diffusion they use the protein pump

• in simple diffusion they fit between gaps in the phospholipid bilayer and in facilitated diffusion they use the protein channels

• in simple diffusion they use the protein pumps and in facilitated diffusion fit between gaps in the phospholipid bilayer

• none of these are correct

Which types of molecules would have the most difficult time crossing the lipid bilayer?

• large, charged molecules

• small, uncharged molecules

What are protein channels and protein pumps?

• proteins acting as enzymes which aid in digestion

• proteins acting as enzymes which aid in the building or larger molecules

• transport proteins in the cell membrane

• proteins involved in cell to cell recognition

If cells containing 10% sodium are placed in a solution with 20% sodium. What type of solution is this and what would happen?

• hypertonic, water would enter the cell

• hypotonic, water would enter the cell

• hypertonic, water would leave the cell

• hypotonic, water would leave the cell

If a cell containing 5% NaCl is placed in an environment that is 5% NaCl. That environment would be described as

• isotonic

• hypertonic

• hypotonic

• hydroponic

Tags

NGSS.HS-LS1-3

How to cells release waste by fusing a vesicle with the cell membrane?

• exocytosis

• endocytosis

Which is the only type of transport that moves particles from an area of low concentration to an area of higher concentration (against the concentration gradient)

• simple diffusion

• facilitated diffusion

• spontaneous transport

• active transport

Which is true about the cell membrane?

• It has a hard surface

• It is semipermeable

• It contains digestive enzymes

• All of the above

Tags

NGSS.MS-LS1-2