How well do you understand living things and their vital processes? Whether you are preparing for JAMB, WAEC, NECO and Post-UTME, these Biology past questions and answers cover such subjects as the chemistry of life, botany, evolution, genetics, ecology etc to help you know what to expect, improve your speed and confidence and be really prepared for the actual aptitude test.
The heart can beat continuously without being fatigued because it is composed of________
skeletal muscles
smooth muscles
cardiac muscles
renal muscles
Correct answer is C
No explanation has been provided for this answer.
Muscle fatigue in the body of an athlete is due to__________
low pH
high oxygen content
accumulation of lactic acid
accumulation of carbonic acid
Correct answer is C
No explanation has been provided for this answer.
Underground storage stems which grow horizontally in the soil are_______
bulbs
runners
rhizomes
corms
Correct answer is C
No explanation has been provided for this answer.
ethanol
oxygen
water
glucose
Correct answer is A
No explanation has been provided for this answer.
The rate of diffusion of molecules between two media will be higher if_________?
the difference in concentration of the two media is low
the difference in concentration of the two media is negligible
the difference in concentration of the two media is high
there is no difference in the concentration of the two media
Correct answer is C
Difference in concentration affects the rate of diffusion. The greater the concentration gradient, the quicker diffusion takes place.