Q: 105 (CDS-I/2007)

Consider the following : Enzymes and protein can be corelated with each other in the following ways
1. All proteins are enzyme.
2. All enzymes are protein.
3. All enzymes are not protein.
4. All proteins are not enzyme.
Which of the above are correct ?
question_subject: 
Science
question_year: 
2007
question_exam: 
CDS-I
stats: 
0,264,240,120,304,40,40