Biology Mcqs

Number of chromosomes in E.coli ?

• (A)  1
• (B)  2
• (C)  4
• (D)  6

Answer

Submitted By :Ali Uppal

Astronauts may use which technique to grow fruits and vegetables ?

• (A)  Tissue culture techniques
• (B)  Cloning
• (C)  Pasterisation
• (D)  Hydroponic culture technique

Answer

Submitted By :Ali Uppal

Messenger RNA is formed in_________?

• (A)  nucleus
• (B)  chloroplast
• (C)  mitochondria
• (D)  none of these

Answer

Submitted By :Ali Uppal

Production of genetically identical copies of organisms/cells by asexula reproduction is called ?

• (A)  Mitosis
• (B)  Replication
• (C)  Cloning
• (D)  Biological control

Answer

Submitted By :Ali Uppal

Co-enzyme is often formed from ?

• (A)  lipid
• (B)  protein
• (C)  inorganic ion
• (D)  vitamin

Answer

Submitted By :Ali Uppal

Breeders have developed new and better varieties of food items by using which technique?

• (A)  Pasteurization
• (B)  Hydroponic culture technique
• (C)  Genetic engineering
• (D)  Biological control techniques

Answer

Submitted By :Ali Uppal

Starch is converted into maltose by?

• (A)  diastase
• (B)  invertase
• (C)  maltase
• (D)  amylase

Answer

Submitted By :Ali Uppal

Conclusion of Mendels work latter became a_____________?

• (A)  Scientific hypothesis
• (B)  Theory
• (C)  Scientific law
• (D)  Productive theory

Answer

Submitted By :Ali Uppal

Which one is not correct for a productive theory?

• (A)  It is predictive
• (B)  It has explanatory power
• (C)  It discourages suggestion of different hypotheses
• (D)  None of these

Answer

Submitted By :Ali Uppal

Which are the four most abundant elements in living cells ?

• (A)  carbon, oxygen, nitrogen, sulfur
• (B)  carbon, oxygen, hydrogen, nitrogen
• (C)  carbon, oxygen, sulfur, phosphorus
• (D)  carbon, sulfur, hydrogen, magnesium

Answer

Submitted By :Ali Uppal