Chemistry for Biologists

In and out of cells

1. Diffusion is an example of:
active transport
passive transport
2. Active transport involves:
molecules moving by osmosis
molecules moving down a concentration gradient
cells using energy
cells producing energy
3. Triglycerides are formed from a reaction between:
glycerol and amino acids, phosphoric acid and complex sugars
glycerine and amino acids, phosphoric acid or simple sugars
glycerine and fatty acid, phosphoric acid or complex sugars
glycerol and fatty acids, phosphoric acid or simple sugars
4. In phospholipids, one fatty acid molecule is replaced by:
phosphoric acid
stearic acid
ethanoic acid
propanoic acid
5. One of the following is not a role of intrinsic and extrinsic proteins:
hormone receptors
pores allowing diffusion of small particles
facilitated diffusion