Polysaccharide

Q.

What are 4 types of biological molecules?

Q. The difference between amylose and amylopectin is:

1. Amylopectin has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\beta$-linkage
   
2. Amylose has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\beta$-linkage
   
3. Amylopectin has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\alpha$-linkage
   
4. Amylose is made up of glucose and galactose

Q. Lactose is composed of:

1. Glucose + galactose
2. Fructose + galactose
3. Glucose + fructose
4. Glucose + glucose

Q. The difference between amylose and amylopectin is:

1. Amylopectin has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\alpha$-linkage
   
2. Amylose is made up of glucose and galactose
3. Amylopectin has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\beta$-linkage
   
4. Amylose has a 1 $\to$ 4 $\alpha$- linkage and a 1 $\to$ 6 $\beta$-linkage
   

Q.

How is protein different from carbohydrates?

Q. Observe the follwoing laboratory tests for $\alpha -D-(+)$ glucose and mention +ve or -ve from the code given below.

1. $++++$
2. $-++-$
3. $+-+-$
4. $++--$

Q. Match the following sugars with their corresponding types

1. Monosaccharide
2. Disaccharides
3. Oligosaccharide
4. Polysaccharides

Q. Which is incorrect in following-

1. Polysaccharides are amorphous, insoluble in water and tasteless
2. Raffinose on hydrolysis gives glucose, fructose and galactose
3. Monosaccharides cannot be hydrolysed to simpler compounds
4. None of these

Q. How many aldose, ketose, furanose, pyranose and hemiacetal units are present respectively in the following molecule?

1. $2,0,0,2,1$
2. $0,2,0,2,1$
3. $1,1,1,1,2$
4. $2,0,0,2,2$

Q. Assertion :Sucrose is a non reducing sugar. Reason: Sucrose is a disaccharide formed by glycosidic linkage between $C-1$ of $\alpha -$ glucose and $C-2$ of $\beta -$ fructose.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. The correct observation in the following reactions is :
Sucrose \( \frac{\text { Glycasidic band }}{\text { Clervage (Hyurolysis) }} \rightarrow A+B \frac{\text { Seliwanoffs }}{\text { refgent }} \)
(JEE MAIN 2020)

1. Gives no colour
2. Formation of red colour
3. Formation of blue colour
4. Formation of violet colour

Q.

Which of the following polymers of glucose is stored by animals?

(a) Cellulose

(b) Amylose

(c) Amylopectin

(d) Glycogen

Q. Lactose is composed of:

1. Glucose + galactose
2. Fructose + galactose
3. Glucose + fructose
4. Glucose + glucose

Q. An indigestible carbohydrate, which is also a constituent of our diet, is

1. Cellulose
2. Galactose
3. Maltose
4. Starch

Q. Match the following sugars with their corresponding types

1. Monosaccharide
2. Disaccharides
3. Oligosaccharide
4. Polysaccharides

Q.

STATEMENT-1 : Amylopectin gives blue colour with $I_2$ solution.
STATEMENT-2 : Amylopectin is insoluble in water.

1. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1
2. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
3. STATEMENT-1 is True, STATEMENT-2 is False
4. STATEMENT-1 is False, STATEMENT-2 is True

Q. A polysaccharide is a polymer of ______.

1. monosaccharides
2. disaccharides
3. both A and B
4. None of these

Q. An indigestible carbohydrate, which is also a constituent of our diet, is

1. Cellulose
2. Galactose
3. Maltose
4. Starch

Q. Which of the following is least related to the other three?

1. Galactose
2. Glucose
3. Mannose
4. Arabinose

Q. Glycogen, a naturally occurring polymer stored in animals is a:

1. monosaccharide
2. disaccharide
3. trisaccharide
4. polysaccharide

Q. Explain the functions of polysaccharides.

Q. Consider the given statements about polysaccharides.
I. These are amorphous solids
II. These are insoluble in water
III. These are sugars
The incorrect statements is/are:

1. only III
2. II and III
3. I and III
4. All

Q. Which of them form complex bond with $H_{2}S$ in the enzymes in blood?

1. Iron
2. Cobalt
3. Haemoglobin
4. None of above

Q. Agarose is a polymer of:

1. glucose
2. agarobiose
3. polyacrylamide
4. bisacrylamide

Q. Which one of the following is a polysaccharide?
Starch, Maltose, Fructose, Glucose

Q. In which of the following classes, the monosaccharides are classified?

1. Aldoses
2. Ketoses
3. Both of the above
4. None of the above

Q.

A homopolymer has only one type of building block called monomer repeated n number of times.A heteropolymer has more than one type of monomer.Proteins are heteropolymers made of aminoacids.While a nucleic acid like DNA or RNA is made of only 4 types of nucleotide monomers, proteins are made of how many monomers

Q. Which is incorrect in following-

1. Polysaccharides are amorphous, insoluble in water and tasteless
2. Raffinose on hydrolysis gives glucose, fructose and galactose
3. Monosaccharides cannot be hydrolysed to simpler compounds
4. None of these

Q.

Which of the following is not a polymer

1. DNA

2. DDT

3. Starch

4. Silk

Q. The ‘Repeating unit’ of glycogen is

1. fructose
2. mannose
3. glucose
4. galactose