multiple choice

1. Which kind of chemical reaction involves the attachment or removal of a phosphate group?
Oxidation-reduction 
Acid phosphorylation 
Phosphorylation 
Hydrolysis 

2. A solution with a high concentration of hydrogen ions could have a pH of:
2. 
6. 
9. 
11. 

3. The reaction C6H12O6 + O2 „_ CO2 + 6H2O is which type of chemical reaction?
Hydrolysis 
Transfer 
Dehydration synthesis 
Oxidation-reduction 

4. Organic molecules always:
contain carbon. 
contain carbon, hydrogen, and oxygen respectively in a 1:2:1 ratio. 
are produced by living organisms. 
dissolve in water.