Mizoram
Your learning today, is the key for your success tommorrow
Subjectwise MCQ
Statewise Prepration
Govt. Examwise MCQ
170 Mizoram MCQ Questions in english हिन्दी
Autoimmune disease occurs when:
Self-reactive immune response.
Vaccines typically contain:
Antigens or attenuated pathogen — to trigger immune memory.
Antibodies are produced by:
B cells — they release immunoglobulins.
ATP is composed of adenine, ribose, and:
Three phosphates — energy-rich bonds.
Enzyme activity can be denatured by:
High heat — disrupts protein structure.
Lipids are hydrophobic because of:
Hydrocarbon tails — repel water.
Peptide bonds link:
Amino acids — forming proteins.
Monosaccharides are:
Simple sugars like glucose.
Binomial nomenclature includes:
Genus and species — e.g., Homo sapiens.
Which is not a chordate characteristic?
Exoskeleton — chordates have internal skeleton.
Phylum Arthropoda is characterized by:
Jointed appendages and exoskeleton.
Which kingdom includes decomposers like mushrooms?
Fungi — absorb nutrients from organic material.
Viruses are classified as:
Acellular — not made of cells.
The ozone layer primarily absorbs:
UV-C/B — protecting organisms from DNA damage.
Rhizobium bacteria in root nodules fix:
Nitrogen — converts atmospheric N₂ to ammonia.
Biomagnification refers to:
Toxin buildup at higher trophic levels.
A keystone species is one that:
Shapes ecosystem structure significantly.
Primary succession begins with:
Bare rock — lichens and mosses colonize first.
Neurons communicate via:
Electrical and chemical — action potentials + neurotransmitters.
Which organ produces bile?
Liver — bile aids fat digestion.
Which hormone regulates blood glucose levels?
Insulin — lowers blood sugar.
Oxygen is carried in blood by:
Hemoglobin — in red blood cells.
The pacemaker of the heart is the:
SA node — initiates heartbeat.
Conjugation in bacteria involves:
Direct transfer — via pili.
Antibiotics are ineffective against:
Viruses — they target cellular machinery.
Which virus type carries reverse transcriptase?
Retrovirus — uses reverse transcription (e.g., HIV).
Gram-positive bacteria have:
Thick peptidoglycan layer — retains crystal violet stain.
Bacteria that require oxygen are called:
Aerobes — need O₂ for metabolism.