In humans, the main oxygen carrier in the blood is -
1. Hemocyanin
2. Proteins
3. Haemoglobin
4. Both microorganisms and haemoglobin.
The difference between amylose and amylopectin is:
1. | Amylopectin has 1→4 α - linkage and 1→6 α-linkage. |
2. | Amylose has 1→4 α-linkage and 1 → 6 β-linkage. |
3. | Amylopectin has 1 → 4 α-linkage and 1 → 6 β-linkage. |
4. | Amylose is made up of glucose and galactose. |
The correct corresponding order of names of four aldoses with configuration given below respectively, is:
1. L-erythrose, L-threose, L-erythrose, D-threose
2. D-threose, D-erythrose, L-threose, L-erythrose
3. L-erythrose, L-threose, D-erythrose, D-threose
4. D-erythrose, D-threose, L-erythrose, L-threose
1. | Aniline | 2. | Acetanilide |
3. | Benzoic acid | 4. | Glycine |
1. | β -glycosidic bond | 2. | Peptide bond |
3. | Dative bond | 4. | α -glycosidic bond |
D(+) glucose yields an oxime with hydroxyl amine. The structure of the oxime would be:
1. | 2. | ||
3. | 4. |
Which one of the following does not exhibit the phenomenon of mutarotation?
1. (+) Sucrose
2. (+) Lactose
3. (+) Maltose=
4. (-) Fructose
In DNA, the complementary bases are:
1. Adenine and thymine; guanine and cytosine
2. Adenine and thymine; guanine and uracil
3. Adenine and guanine, thymine and cytosine
4. Uracil and adenine; cytosine and guanine
Cellulose is a straight-chain polysaccharide composed of only :
1. D-glucose units joined by - glycosidic linkage.
2. D-glucose units joined by - glycosidic linkage.
3. D-galactose units joined by - glycosidic linkage.
4. D-galactose units joined by - glycosidic linkage.