Civil Superior Services — Complete MCQ Bank
CSS is Pakistan’s premier federal competitive examination. Strong preparation requires conceptual clarity, broad general knowledge and consistent practice across compulsory and optional areas.
What is the term for a permanent change in the DNA sequence of an organism?
Which process converts mRNA information into a protein sequence at ribosomes?
Which process copies DNA information into mRNA in the nucleus?
Which molecule carries genetic information from DNA to ribosomes for protein synthesis?
Which type of nutrition involves organisms that feed on dead and decaying organic matter?
What is the process by which the kidneys filter blood to form urine?
What is the functional unit of the kidney responsible for filtration of blood?
Which type of white blood cell produces antibodies against specific pathogens?
What is the process by which white blood cells engulf and digest bacteria and foreign particles?
Which type of immunity is present from birth and provides a non-specific first line of defence?