STD 12 - 9. biotechnology principlas and process BIOLOGY - STD 12 - 9. biotechnology principlas and process

• A
  Most commonly used bio-reactors are of stirring type
• ✓
   Bio-reactors are used to produce small scale bacterial cultures
• C
  Bio-reactors have an agitator system, an oxygen delivery system and foam control system
• D
  A bio-reactor provides optimal growth conditions for achieving the desired product

Answer: B.

The following diagram showing restriction sites in $E$. coli cloning vector pBR322. Find the role of ' $X$ ' and ' $Y$ genes:

• ✓
  The gene ' $X$ ' is responsible for controlling the copy number of the linked DNA and ' $Y$ ' for protein involved in the replication of Plasmid.
• B
  The gene ' $X$ ' is for protein involved in replication of Plasmid and ' $Y$ for resistance to antibiotics.
• C
  Gene ' $X$ ' is responsible for recognitions sites and ' $Y$ ' is responsible for antibiotic resistance
• D
  The gene ' $X$ ' is responsible for resistance to antibiotics and ' $Y$ ' for protein involved in the replication of Plasmid.

Answer: A.

• A
  Tumor independent plasmid
• ✓
  Tumor inducing plasmid
• C
  Temperature independent plasmid
• D
  Tumour inhibiting plasmid

Answer: B.

• A
  $D$ and $EV$ only
• ✓
  $B$ and $C$ only
• C
  $A$ and $E$ only
• D
  $A$ and $B$ only

Answer: B.

• ✓
  Probe
• B
  BAC
• C
  YAC
• D
  pBR322

Answer: A.