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NEET Biology Solved Question Paper 2006

Multiple Choice Questions

A prokaryotic cell lacks :

nucleus
nuclear membrane
membrane bound organelles
all of the above

Extranuclear inheritance is a consequence of the presence of genes in :

ER and mitochondria
lysosomes and ribosomes
ribosomes and chloroplast
mitochondria and chloroplasts

Vesicles of Smooth Endoplasmic Reticulum (SER) are most likely on their way to :

plastids
lysosomes
nucleolus
Golgi apparatus

Lysosomes are the store house of :

ATP
sugar
proteins
hydrolytic enzymes

Lipids are insoluble molecules are :

neutral
Zwitter ions
hydrophobic
hydrophilic

Which of the following is the simplest amino acid?

Glycine
Alanine
Tyrosine
Asparagine

7.
Carbohydrates, ingested in the diet, are hydrolyzed by the enzyme :

pepsin

cellulose

$α$ - amylase

glycosidase

$α$ - amylase

The principal of carbohydrate in diet is starch i.e., the carbohydrates, ingested in the diet, are hydrolyzed by the enzyme called $α$ -amylase. This enzyme is found in saliva and intestinal juice. It's main function is to break down glycosidic bonds between glucose units.

Pepsin is an endopeptidase that breaks down proteins into smaller peptides. It is produced in the stomach and is one of the main digestive enzymes in the digestive systems of humans and many other animals.

Cellulose is the main constituent of cell wall in plants. It provides rigidity or stiffness to plants. It is the abundant organic compound on Earth.

Glucosidases are enzymes involved in breaking down complex carbohydrates such as starch and glycogen into their monomers. Their main function is to catalyze the cleavage of individual glucosyl residues from various glyco- conjugates including alpha or beta linked polymers of glucose.