Question

2. Translocation of sugars in flowering plants occurs in the
form of:
(a) Glucose
(b) Sucrose
(c) Fructose
(d) Maltose
Sucrose is composed of:
(aGlucose & fructose
(b) Glucose & glycogen
(c) Two molecules of glucose
(d) Glycogen & fructose
Carbohydrates, the most abundant biomolecules on earth,
are produced by:
(a) Some bacteria, algae and green plant cells.
(b) All bacteria, fungi and algae.
(c) Fungi, algae and green plants cells.
(d) Viruses, fungi and bacteria.
Which of the following disaccharides gives two molecules
of glucose on hydrolysis?
(a) Maltose
(b) Lactose
(c) Both (a) and (b)
(d) Sucrose
3 3
through:​

Answer 1

Answer:

2) Glucose and fructose

3) a

4) d) Sucrose

Answer 2

Answer:

• Flowering plants produces sugar in the form of glucose but translocate in the form of sucrose because sucrose is more energy efficient in storage and transferring, less reactive than glucose and water soluble.

• Sucrose is made up of glucose and fructose unit linked together by an acetal oxygen bridge between C1 of alpha-D glucose and C2 of Beta-D fructose.

• Carbohydrates (example cellulose, starch, glycogen, glucose, fructose etc) are the most abundant biomolecules on earth. The carbohydrates are produced by the reduction of atmospheric carbon dioxide with the help of light energy in the process of photosynthesis

• Maltose is the disaccharide which is formed by the linkage of 2 glucose residues by an alpha 1,4 linkage. Upon hydrolysis, the glycosidic bond is broken and maltose yields 2 glucose residues. On the other hand, the disaccharide; Sucrose yields glucose and fructose and lactose yields glucose and galactose.