Answer: 1: option C, 2: option D, 3: option B, 4: option C.
Explanation:
1. Option C. Disaccharide.
Disaccharide is formed as a result of two monosaccharides joined by glycosidic linkage to form a disaccharide.
2. Option D. Starch.
Plants stored their manufactured glucose in form of starch. The glucose is manufactured during photosynthesis.
3. Option B. The R group.
The R group differs among amino acids, they are radicals and it determines the differences between these amino acids (this simply implies that the R group is the variable part of amino acids). The R groups are very essential because it is their properties that determines the structure and function of protein.
4. Option C.
Most tertiary structures can be either globular or fibrous. Generally, proteins such as enzymes which are basically non-structural proteins are globular, they look spherical.
The enzyme amylase is globular in shape therefore it is a tertiary structure protein.
