The disease phenylketonuria is an example of :

Read the given passage carefully and answer the questions
Salmonella typhi is a pathogenic bacterium which causes typhoid fever in human beings. Sustained high fever (39° to 40°C), weakness, stomach pain, constipation, headache and loss of appetite are some of the common symptoms of this disease. Typhoid fever could be confirmed by Widal test. Plasmodium enters the human body as sporozoites. The parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture. The rupture of RBCs is associated with release of a toxic substance, haemozoin, which is responsible for the chill and high fever recurring every three to four days. There is lymphoid tissue also located within the lining of the major tracts (respiratory, digestive and urogenital tracts) called mucosa-associated lymphoid tissue (MALT). In our body, cell growth and differentiation is highly controlled and regulated. In cancer cells, there is breakdown of regulatory mechanisms. Normal cells show a property called contact inhibition by virtue of which contact with other cells inhibits their uncontrolled growth. Cancerous cells just continue to divide giving rise to masses of cells called tumors. Tumors are of two types: benign and malignant. Cannabinoids are a group of chemicals, which interact with cannabinoid receptors present principally in the brain. Generally taken by inhalation and oral ingestion, these are known for their effects on cardiovascular system of the body.
Widal test is used to diagnose

Common cold is caused by:

Identify the features developed by flowering plants to discourage self-pollination:
(A) Self incompatibility
(B) Synchronized pollen release and stigma receptivity
(C) Different positions of anther and stigma in a flower
(D) Producing bisexual flowers
Choose the correct answer from the options given below:

After the completion of replication, each DNA molecule will have one parental strand and one newly synthesized strand. This scheme is known as:

Biofertilizers enrich the nutrient quality of the soil. Which of the following is not a source of biofertilizer?

The backbone of a polynucleotide chain is formed by:

A current carrying solenoid of cross-sectional area \( 2 \, cm^2 \) and 2000 turns has a magnetic moment of \( 0.80 \, Am^2 \). The current flowing through the solenoid is

Match List-I with List-II

List-I (IUPAC name)	List-II (Common name)
(A) 2,4,6-Trinitrophenol	(I) Resorcinol
(B) Benzene-1,4-diol	(II) Quinol
(C) Benzene-1,3-diol	(III) o-Cresol
(D) 2-methyl phenol	(IV) Picric caid

Choose the correct answer from the options given below:

The slope of the normal to the curve \(y=x^3-4 \sin x\) at \(x=0\) is:

With reference to the microorganisms involved in production, identify the odd combination.

Two point charges of 1 C each are separated from each other by a distance of 1 m in vacuum.
The force of interaction between them is:

In a cyclotron, if a deutron can gain an energy of 40 MeV, then a proton can gain an energy of