Most common element present in human body is:
| 1. | Oxygen | 2. | Carbon | 
| 3. | Hydrogen | 4. | Sulfur | 
When we homogenize any tissues in an acid the acid soluble pool represents
| 1. | Cytoplasm | 2. | Cell membrane | 
| 3. | Nucleus | 4. | Mitochondria | 
| 1. | α amino acids are substituted methanes | 
| 2. | Only triglycerides are lipids that are both macromolecules as well as polymers | 
| 3. | Cellulose forms secondary helical structures and can hold iodine molecules in the helical portion | 
| 4. | Every virus will have both DNA and RNA as its genetic material | 
The unique properties of each amino acid is determined by its particular:
1. R group
2. amino group
3. kinds of peptide bond
4. number of bonds to other amino acids
The simplest α amino acid is:
| 1. | Glycine | 2. | Alanine | 
| 3. | Serine | 4. | Lysine | 
Which of the following is not an aromatic amino acid?
| 1. Phenylalanine | 2. Threonine | 
| 3. Tyrosine | 4. Tryptophan | 
| 1. | Lysine | 2. | Histidine | 
| 3. | Arginine | 4. | Valine | 
| 1. | Glycine | 2. | Alanine | 
| 3. | Serine | 4. | Lysine | 
| 1. | It has no net charge. | 
| 2. | It has a positive and a negative charge at different parts of the molecule. | 
| 3. | It can donate a proton to the surrounding medium. | 
| 4. | It can accept a proton from the surrounding medium. | 
| 1. | 2. | ||
| 3. | 4. |