Biology Mcqs

Movement of the material across the cell membrane which does not requiring expenditure of metabolic energy is called__________?

A. Active transport
B. Passive transport
C. Co-transport
D. Counter transport

Ecosystem not found in Pakistan is_____________?

A. Tropical rain forest
B. Temperate deciduous forest
C. Grassland
D. Tundra

Which of the following is most constant abiotic component of ecosystem___________?

A. Air
B. Water
C. Land
D. Gravity

Percentage of proteins in cell membrane is____________?

A. 20-40%
B. 40-50%
C. 60-80%
D. 80-100%

_____________ supported theory of special creation?

A. Linnaeus
B. Aristotle
C. Mendel
D. Lamarck

In Hardy-Weinberg formula P2 represents frequency of_____________?

A. Recessive allele
B. Dominant allele
C. Homozygous dominant individual
D. Homozygous recessive individual

Who first observed and thus hypothesized that new cells are formed from previously existing living cell?

A. Theodor Schwann and Schleiden
B. Rudolph Virchows
C. Louis Pasteur
D. Both b and c

In condition of high temperature, following does not occur or occurs at low level__________?

A. Vasodilation
B. Activation of sweat glands
C. Thermogenesis
D. Evaporative cooling

“lubb” sound is produced due to___________________?

A. Opening of inlet valve
B. Closure of inlet valve
C. Opening of outlet valve
D. Closure of outlet valve

Who coined the term CELL?

A. Schwann
B. Schleiden
C. Robert Hook
D. Both a and b