List of top Biology Questions

The parts of human brain that helps in regulation of sexual behaviour, expression of excitement, pleasure, rage, fear etc. are:
DNA polymorphism forms the basis of:
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): Polymerase chain reaction is used in DNA amplification.
Reason (R): The ampicillin resistant gene is used as a selectable marker to check transformation.
In the light of the above statements, choose the correct answer from the options given below:

Which of the following combinations is required for chemiosmosis?

Match Column-I with Column-II for housefly classification and select the correct option using the codes given below :
Describe the structure of the following with the help of labelled diagrams.
(i) Nucleus
(ii) Centrosome

In a population of rabbits, the brown fur color (B) is dominant to the white fur color (b). If a heterozygous brown rabbit is crossed with a homozygous white rabbit, what is the probability of their offspring having brown fur?

What is the role of mitochondria in the cell, and how does their structure relate to their function?

What is the role of the ribosomes in the cell?

What is the function of the Golgi apparatus in the cell?

In a plant cell, which organelle is primarily responsible for photosynthesis?
Which of these enzymes is required to cleave a plasmid?
In which stage of the cell cycle does DNA replication occur?
Which of the following is a function of white blood cells (WBCs) in the human body?
What is the primary function of the mitochondria in eukaryotic cells?
Which of the following is responsible for the synthesis of ribosomal RNA (rRNA) in eukaryotic cells?
Which of the following is a characteristic of prokaryotic cells?
Which of the following is an example of active transport in cells?
What is the role of chlorophyll in photosynthesis?
Which organ in the human body is primarily responsible for regulating blood sugar levels?
Which of the following is the primary function of ribosomes in a cell?
Which of the following is NOT a part of the human circulatory system?
Following representations P, Q and R denote few steps of Griffith Experiment. Identify the correct one(s)
P. R strain → Inject into mice → Mice die
Q. S strain (Heat killed) → Injected into mice → Mice die
R. R strain → Inject into mice → Mice live
Identify the incorrect match respect to recently extinct animals and their place extinction according to IUCN Red list
tRNA is referred to as an "adapter molecule" primarily because it: