Practice Pakistan's most useful MCQs for competitive exams

Sebum produced from sebaceous glands in a mammal helps in___________?

• (A)  Protection against micro organisms
• (B)  Temperature regulation
• (C)  Excretion
• (D)  All of these

Answer

Submitted By :Ali Uppal

Animals fats are ______________ atroom temperature?

• (A)  Liquids
• (B)  Gases
• (C)  Solids
• (D)  None of these

Answer

Submitted By :Ali Uppal

The monosaccharide found in some bacteria and occurring rarely are______________?

• (A)  Trioses
• (B)  Hexoses
• (C)  Tetroses
• (D)  Pentoses

Answer

Submitted By :Ali Uppal

The one which causes contraction of wall of the uterus during and after birth?

• (A)  ADH
• (B)  MSH
• (C)  Oxytocin
• (D)  Progesterone

Answer

Submitted By :Ali Uppal

The trioses which are intermediate in respiration and photosynthesis are_______________?

• (A)  Glyceraldehydes
• (B)  Dihydroxy acetone
• (C)  Both of these
• (D)  None of these

Answer

Submitted By :Ali Uppal

The first stage of development in which a cavity appears is the__________?

• (A)  Neurula
• (B)  Morula
• (C)  Gastrula
• (D)  Balastula

Answer

Submitted By :Ali Uppal

In living organisms the lubricant which provides protection against damage resulting from friction is___________?

• (A)  Carbohydrates
• (B)  Fatty acid
• (C)  Water
• (D)  Protein

Answer

Submitted By :Ali Uppal

The basic structural unit of a chromosome is____________?

• (A)  The centromere
• (B)  Nuceleosome
• (C)  Telomere
• (D)  Histone

Answer

Submitted By :Ali Uppal

Exposure to low temperature stimulates plants to flower. This is called___________?

• (A)  Photoperiodism
• (B)  Thermotropism
• (C)  Vernalisation
• (D)  Thermoregulation

Answer

Submitted By :Ali Uppal

In Cx(H2O)y x ranges from______________?

• (A)  1 to 3 thousand
• (B)  3 to many thousand
• (C)  3 to 5 thousand
• (D)  5 to 9 thousand

Answer

Submitted By :Ali Uppal