1. From the list below choose all which apply to the process of diffusion a) Req
ID: 87497 • Letter: 1
Question
1. From the list below choose all which apply to the process of diffusion
a) Requires energy b)Passive process c)Transports with the concentration gradient d)Powered by random motion e)Transports against the concentration gradient
2. Choose which substances cannot pass directly through the phospholipid bilayer of the plasma membrane.
a)Gasses b)Charged molecules c)Hydrophobic molecules d)Ions e)Water f)ATP
3. Choose which substances can pass freely through the plasma membrane.
a)Gasses b)Charged molecules c)Hydrophobic molecules d)Ions e)Water f)ATP
4. Choose the passive processes from the list below.
a)Water moving through the membrane b)Sodium moving out of a cell c)Potassium moving into a cell d)Endocytosis e)Oxygen moving from inhaled air into blood stream
5. Choose the processes from the list below which require active transport.
a)Water moving through the membrane b)Sodium moving out of a cell c)Potassium moving into a cell d)Endocytosis e)Oxygen moving from inhaled air into blood stream
Explanation / Answer
1. Diffusion is as physical process in which molecule moves from the area of higher concentration to the area of lower concentration so following is the characteristics of diffusion
(b) passive process and (c) transport with the concentration gradient
2. Option b, d , e, and f are the right answer because the only small uncharged molecule can pass through the plasma membrane.
3. option a and c is the right answer because small uncharged molecule can pass through plasma membrane
4. Option a, c and e is the right option because all these processes don't require energy and move along the concentration gradient.
5. option b and d are the right option because these process required energy and transport against the concentration gradient.
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