Starch

Q. Starch forms ______ secondary structure.

1. linear
2. helical
3. beta-sheet
4. none of the above

Q. Starch is a polymer of _______.

1. Fructose
2. Glucose
3. Both (a) and (b)
4. None of these

Q.

Which color is given by cellulose when treated with iodine solution? Explain.

Q.

Starch is polymer of:

1. Glucose

2. Fructose

3. Maltose

4. Sucrose

Q.

Final product of carbohydrate digestion is

1. Sucrose

2. Lactose

3. Glucose

4. Maltose

Q. What does I2 means which is given in ncert in polysaccharides section?

Q.

A destarched plant is one whose:

1. Leaves are free from chlorophyll

2. Aerial parts are free from starch

3. Leaves are free from starch

4. Plant is free from starch

Q. Starch forms ______ secondary structure.

1. linear
2. helical
3. beta-sheet
4. none of the above

Q. Starch forms ______ secondary structure.

1. linear
2. helical
3. beta-sheet
4. none of the above

Q.

Differentiate between the following pairs on the basis of what is indicated in the brackets.

Leaf and Liver (form in which glucose is stored)

Q.

Which of the following is a di-saccharide?

1. Glucose

2. Fructose

3. Galactose

4. Sucrose

Q.

Explain the process of digestion.

Q.

Salivary amylase breaks down starch into

1. Galactose and amylose

2. Amylose and amylopectin

3. Glucose and fructose

4. Glucose and maltose

Q. Which of the following is a sulphated polysaccharide which is used for enzyme immobilisation?

1. Cellulose
2. Gelatin
3. Carrageenan
4. All of the above

Q. Chloroplast has maximum quantity of ...... in the stroma.

1. Dehydrogenase
2. RuBP carboxylase
3. Pyruvic carbohydrates
4. Hexokinase

Q. Uptake of mineral nutrients due to the difference in electropotential gradient without the use of metabolic energy is

1. Osmotic absorption
2. Passive absorption
3. Active absorption
4. Non osmotic active absorption

Q. Almost all the aquatic animals excrete ammonia as the nitrogenous waste product. Which of the following statement is not in agreement with this situation?

1. Ammonia is easily soluble in water.
2. Ammonia is released from the body in a gaseous state.
3. Ammonia is highly toxic and needs to be eliminated as and when formed.
4. The amino groups are converted to ammonia which is excreted.

Q. What is amylase? Where is it found? What does it do?

Q. In photorespiration, what is the role of peroxisome?

1. Help in oxidation of glycolate
2. Help in synthesis of PGA
3. Help in oxygenation of glycolate
4. Help in reduction of glyoxylate

Q. why cows , buffaloes , lion and tiger does not have salivary amylase in their saliva?