حیاتی ٹیکنالوجی

Enzymes that cut DNA at specific sites are:

• 1 Proteases
• 2 Ligases
• 3 Restriction enzymes
• 4 Polymerases

PCR is used to:

• 1 Stain cells
• 2 Copy DNA
• 3 Grow plants
• 4 Cut proteins

Plasmids are used as:

• 1 Enzymes
• 2 Fuels
• 3 Hormones
• 4 Vectors

Dolly the sheep was produced by:

• 1 Fermentation
• 2 Cloning
• 3 Natural mating
• 4 Selective breeding

DNA fingerprinting is used in:

• 1 Taking X rays
• 2 Forensic identification
• 3 Measuring blood pressure
• 4 Digesting food

The enzyme that joins DNA fragments is:

• 1 DNA ligase
• 2 DNA polymerase only
• 3 Restriction enzyme
• 4 Protease

Genetically modified crops can be made resistant to:

• 1 Pests and herbicides
• 2 Light
• 3 Sound
• 4 Gravity

Gel electrophoresis separates DNA fragments by:

• 1 Taste
• 2 Colour
• 3 Age
• 4 Size