List of practice Questions

When a vehicle moving with kinetic energy \( K \) is stopped in a distance \( d \) by applying a stopping force \( F \), the relation between \( F \) and \( K \) is given by:
A machine gun fires a bullet of mass 25 g with a velocity of 1000 ms\(^{-1}\). If the man holding the gun can exert a maximum force of 100 N on the gun, the maximum number of bullets that he can fire per second is:
Write short notes on the following: Effect of invasive alien species
If the slope of the velocity-time graph of a moving particle is zero, then its acceleration is:
Endangered species and their conservation
The length of the second's hand in a watch is 1 cm. The magnitude of the change in the velocity of its tip in 30 seconds (in cm/s) is:
Add \( 2.7 \times 10^{-5} \) to \( 4.5 \times 10^{-4} \) with due regard to significant figures
Comment upon the following: Infectious diseases
Describe gel electrophoresis technique in brief.
Comment on the following: Auto-immune disease Opioids
Give an example where more than two alleles govern the same character.
Who propounded the chromosomal theory of inheritance?
Name the food chain which begins with dead and decaying organic matter.
Who among the following proposed that evolution of life forms occurred due to use and disuse of organs?
Which of the following is a non-infectious disease?
Which of the following methods is used to introduce foreign DNA into the host cells?
Which hormone is secreted by corpus luteum?
What are stem cells?
Pollen grains are well preserved as fossils because of the presence of which of the following?
Describe the dihybrid cross with the help of a checker-board.

Write short notes on the following: 

(i) Bioinformatics 

(ii) Amniocentesis

Write a note on seven contrasting traits studied by Mendel in pea plants.
Differentiate between Phenotype and Genotype.
Write a short note on over-exploitation and co-extinction.
Write a note on allergy.