CBSE
Multiple Choice QuestionsSome amino acids are coded by more than one codon as the code is
unambiguous
specific
universal
punctuated
punctuated
Concanavalin A is
an essential oil
a lectin
a pigment
an alkaloid
Match Column I with Column II and choose the right option
| Column I | Column II |
| A. Acetyl CoA | 1. 3-carbon compound |
| B. Malic acid | 2. 6-carbon compound |
| C. Pyruvic acid | 3. 4-carbon compound |
| D. Glucose | 4. 2-carbon compound |
A - 2; B - 4; C - 3; D - 1
A - 2; B - 3; C - 4; D - 1
A - 4; B - 1; C - 2; D - 3
A - 4; B - 3; C - 1; D - 2
A - 4; B - 3; C - 1; D - 2
Match Column I with Column II and Column III. Choose the correct option.
| Column I (Substrate) | Column II (Enzyme) | Column III (Product) |
| 1. Lactose | A. Lipase | i. Galactose |
| 2. Monogycerides | B. Trypsin | ii. Maltose |
| 3. Starch | C. Lactase | iii. Fatty acid |
| 4. Peptones | D. Amylase | iv. Dipeptides |
1-A-i; 2-C-ii; 3-B-iii; 4-D-iv
1-D-i; 2-A-ii; 3-B-iii; 4-C-iv
1-C-i; 2-A-iii; 3-D-ii; 4-B-iv
1-C-i; 2-A-ii; 3-D-iii; 4-B-iv
1-C-i; 2-A-ii; 3-D-iii; 4-B-iv
Which of the following secondary metabolites belong to the group drugs?
I. Morphine
II. Curcumin
III. Codeine
IV . Vinblastine
V. Abrin
I and II only
I and V only
II and III only
II and IV only
II and IV only
Which of the following statements about amino acids is false?
Based on the nature of the carboxyl group there are many amino acids
Amino acids are substituted methane
Amino acids have an amino group and acidic group as substituent on the -carbon
There are four substituent groups occupying the four valency positions
There are four substituent groups occupying the four valency positions
Which of the following is/are cellulosic?
(i) Paper
(ii) Cotton fibre
(iii) Chitin
(iv) Glycogen
(i) and (ii) only
(i) and (iii) only
(i), (iii) and (iv) only
(iii) and (iv) only
(iii) and (iv) only
The given organic compound is a diagrammatic representation of
Lecithin
Adenosine
Adenylic acid
Uridine
Uridine
Which of the following statements about the structure of proteins is true?
The sequence of amino acids in a protein represents the secondary structure
The helices of proteins are always left handed
Adult human hemoglobin consists of two subunits
The left end of a protein is called the C-terminal and the right end is called the N-terminal
The left end of a protein is called the C-terminal and the right end is called the N-terminal
In a polypeptide, amino acids are linked by
An ester bond
A hydrogen bond
A covalent bond
A glycosidic bond
A glycosidic bond
