chp 3.2

Question 1

Factors that determine whether a molecule can pass through theplasma membrane

Answer 1

1. molecule size
2. polar molecule
3. ionic charge

Question 2

molecules that can pass through hospholipid bilayers

Answer 2

1. lipidsoluble molecules
2. small and nonpolar molecules (oxygen and carbon dioxide)
3. polar molecule (water because moleculeof water is very small)

Question 3

water soluble substances aided by?

Answer 3

1. Channel protein
2. Carrier protein

Question 4

water solubles pass through the plasma membrane aided by?

Answer 4

1. channelprotein
2. carrier protein

Question 5

channel protein alllow?

Answer 5

small, water soluble molecule
(na+,k+,ca2+)

Question 6

carrier protein allow?

Answer 6

large, water solluble molecule
(glucose and amino acid)