Membrane and Transport Quiz

In the following diagram of the cell membrane, name the structure labeled 'A'.

• Tranport protein

• Phospholipid bilayer

• Cholesterol

• Glycolipid

In the following diagram of the cell membrane, name the structure labeled 'B'.

• Transport protein

• Phospholipid bilayer

• Cholesterol

• Glycoprotein

Which of the following is true of this phospholipid molecule?

• The fatty acid tails are polar, hydrophilic molecules.

• The phosphate head contains no phosphorus.

• The fatty acid tails are non-polar, hydrophobic molecules.

• Water passes easily through the fatty acid tails.

Which of the following is the name of the model of the cell membrane that states that the phospholipids, proteins, and other molecules that make up the membrane are not stationary (i.e., they move relative to one another).

• Cell impermeability model

• Enzyme lock and key model

• Theory of relativity

• Fluid mosaic model

________________ is the diffusion of water across a membrane.

• Translation

• Osmosis

• Transcription

• Homeostasis

Which of the following describe why a medical professional will never give you an IV (intravenous) injection that pumps distilled (pure) water into your veins?

• Distilled water is hypotonic to the solution on the interior of the cells and will cause water to rush into your cells bursting them.

• Distilled water is hypertonic to the solution on the interior of the cells and will cause water to rush out of your cells shriveling them up.

• IV bags contain no solutes and are always filled with distilled water.

• Living organisms don't need water.

_______________ transport uses carrier proteins and ATP to transport molecules against the concentration gradient (i.e., from low to high concentration).

• Facilitated

• Passive

• Aggressive

• Active

The passage of a substance from an area of high concentration to an area of low concentration

• Active Transport

• Diffusion

• Vesicular Transport

• Exocytosis

The energy molecule that powers some modes of transport

• ADP

• ATP

• AGP

• ABP

This a picture of an animal and plant cell placed in a solution. Describe the solution?

• Isotonic

• Hypotonic

• Hypertonic