Absorption of Carbohydrates

Q.

Water from the undigested food is absorbed mainly in the

1. Stomach

2. Food pipe

3. Small intestine

4. Large intestine

Q.

Which of the following glucose transporters is insulin-dependent?

1. GLUT IV

2. GLUT I

3. GLUT II

4. GLUT III

Q. Which does not occur with glucose

1. Ingestion
2. Absorption
3. Assimilation
4. Digestion

Q. Glucose and amino acids are absorbed in intestine by

1. Active transport
2. Passive transport
3. Selective absorption
4. Osmosis

Q. Which one of the following statements is/are true regarding digestion and absorption of food in humans?

1. Oxyntic cells in our stomach secrete the proenzyme pepsinogen
2. Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries
3. About 60% of starch is hydrolysed by salivary amylase in our mouth
4. Glucose and amino acids are absorbed through intestinal mucosa with the help of carrier proteins

Q.

Discuss mechanisms of absorption.

Q.

What do you mean by absorption of food?

Q. Name a microbe used for statin production. How do statins lower blood cholesterol level

Q.

Proteins after digestion are converted into

1. Carbohydrates

2. Small globules

3. Amino acid

4. Starch

Q. Fructose is absorbed into the blood through mucosa cells of intestine by the process called

1. Active transport
2. Facilitated transport
3. Simple diffusion
4. Co-transport mechanism

Q.

Give reasons for the following.
No digestion takes place in the oesophagus.

Q. Bottled juices are clarified by the use of

1. Lipases
2. Pectinases
3. Both A and B
4. Peptidases

Q.

Give the main function of thrombocytes.

Q.

How is food transported in the human body?

Q.

Read this

(i) Cover the middle part of a healthy leaf with strips of black paper and fasten it with clips.

(ii) Keep the potted plant under bright sunshine.

(iii) Destarch the potted plant.

The correct sequence of procedure for experiment to study light is essential for photosynthesis should be?

1. (i), (ii), (iii)

2. (ii), (i), (iii)

3. (iii), (i), (ii)

4. (i), (iii), (ii)

Q.

Sporopollenin an organic material is present in

1. Exine

2. Intine

3. Stigma

4. Style

Q.

Given below are five sets of terms. Arrange and rewrite each so that they are in a logical sequence.

Oesophagus, Small intestine, Mouth, Stomach, Large intestine

Q. Which of the following statements are correct about the utilization of carbohydrates in our body?
I. A part of glucose is utilized for the production of ATP.
II. A part of glucose, fructose and galactose is converted to glycogen and stored only in liver.
III. Glucose is broken down to yield glycogen subunits
IV. Some glucose is also utilized in maintaining the blood sugar level of the blood.

1. Only statement I is correct
2. Statement II and III are correct
3. Statement I, II and IV are correct
4. All are correct

Q. A unique vascular connection between the digestive tract and liver is called

Q. Secretion of oxyntic cells are essential for absorption of

1. Vitamin C
2. Vitamin E
3. Vitamin $B_{12}$
4. Vitamin A

Q. The essential chemical components of many coenzymes are:

1. Proteins
2. Nucleic acids
3. Carbohydrates
4. Vitamins

Q. The following is a scheme showing the fate of carbohydrates during digestion in the human alimentary canal. Identify the enzymes acting at stages indicated as A, B, C and D. Choose the correct option from those given.

1. A - Amylase, B - Maltase, C - Lactase, D - Invertase
2. A - Amylase, B - Lactase, C - Maltase, D - Invertase
3. A - Amylase, B - Maltase, C - Invertase, D - Lactase
4. A - Amylase, B - Invertase, C - Maltase, D - Lactase

Q. Which of the following statements are correct about the utilization of carbohydrates in our body?
I. A part of glucose is utilized for the production of ATP.
II. A part of glucose, fructose and galactose is converted to glycogen and stored in liver and cells of muscles.
III. Glucose is broken down to yield glycogen subunits
IV. Some glucose is also utilized in maintaining the blood sugar level of the blood.

1. Only statement I is correct
2. Statement II and III are correct
3. Statement I, II and IV are correct
4. All are correct

Q. S.E.R. takes part in synthesis of

1. Vitamins
2. Lipids and steroids
3. All the above.
4. Carbohydrates

Q. Which of the following shows that metabolic energy is required for absorption of ions?

1. More ions absorption in presence of ATP
2. More ions required for absorption of O₂.
3. Less absorption of ions in presence of O₂
4. More ions absorption in presence of NAD.

Q.

What is the main source of energy in our body?

Q.

The metabolic by-products of haemoglobin metabolism is

1. Bilirubin

2. Biliverdin

3. Both a & b

4. Globulin

Q.

Sweetest sugar is derived from the breakdown of

1. Malt sugar

2. Milk sugar

3. Blood sugar

4. Cane sugar

Q. In which part of gastro-intestinal tract does maximum absorption of water occur?

1. Colon
2. Duodenum
3. Jujenum
4. Ileum

Q. Match the columns and identify the correct option

Column I	Column II
a. Pinocytosis	(i) Ephagy
b. Exocytosis	(ii) Autodigestion
c. Phagocytosis	(iii) Cell drinking process
d. Autolysis	(iv) Cell eating process

1. a(iii), b(ii), c(iv) d(i)
2. a(i), b(iii), c(iv) d(ii)
3. a(iii), b(i), c(iv) d(ii)
4. a(iii), b(i), c(ii) d(iv)