Biotechnology Q1 M2: Different Cell Functions: Cell Transport

Homeostasis is maintained by which part of the cell?

• ribosomes

• mitochondria

• Golgi bodies

• cell membrane

Proteins enter and exit the cell by _____.

• osmosis

• simple diffusion   

• channel diffusion   

• facilitated diffusion   

It is a cellular process in which larger particles are brought into the cell.

• phagocytosis

• pinocytosis

• receptor-mediated endocytosis

• none of the choices

What happens to the cell when it is in a hypotonic solution?

• increase in size

• decrease in size

• size remains the same

• cannot be determined

A substance that moves across a cell membrane without using the cell’s energy tends to move _____.

• towards the area where it is less concentrated.

• away from the area where it is less concentrated.

• both A and B

• none of the choices

Cells placed in distilled water _____.

• shrink and shrivel

• swell and burst

• swell and shrivel

• shrink and burst

Sea water is dangerous to drink because _____.

• one cup of sea water contains enough sodium to poison you.

• sea water is hypertonic to your body tissues and drinking it will cause you to lose water.

• sea water is isotonic to your body fluids and you will absorb too much water.

• the salt causes hypertension and you will promptly die of a stroke.

If a solution outside a cell is less concentrated with solute, which of the following describes the external solution?

• isotonic

• hypotonic

• hypertonic

• cannot be determined

If the volume of a cell increases when it is placed in a solution, that solution is said to be _____ to the cell.

• isotonic

• hypotonic

• hypertonic

• cannot be determined

Inside one osmosis bag*, A, is a 50% glucose solution and inside bag B is a 20% glucose solution. Both bags are put into beakers containing 100% water. *Osmosis bags are membranes that let water through but not glucose.

• Bag A will gain weight.

• Bag B will gain weight.

• Both bags will gain weight.

• Both bags will lose weight

• Both bags will remain the same.