Nucleus
Nucleus is a Science & Technology concept from the MPSC syllabus, tested in 2 past MPSC questions (2021, 2024). Below are those real questions with their correct answers and explanations.
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Real questions that test this
खालीलपैकी कोणत्या पेशी घटका भोवती पटल (आवरण) नसते? Which of the following cell organelle is not bounded by membrane ?
Ribosomes and centrioles are cell organelles that do not have a surrounding biological membrane. Mitochondria, chloroplasts, and nucleus have double or single membranes.
खालीलपैकी कोणते वाक्य चुकीचे आहे ? / Which of the following sentence is wrong ?
(a)अणुकेंद्र हे प्रोटॉन व न्यूट्रॉनने बनलेले असते. / Atomic nucleus is made up of protons and neutrons.
(b)प्रोटॉनवर धनभार असतो. / Proton has a positive charge.
(c)इलेक्ट्रॉनवर ऋणभार असतो. / Electron has a negative charge.
(d)न्यूट्रॉनवर धनभार असतो. / Neutron has a positive charge.
Neutrons are neutral subatomic particles with no electrical charge, so statement (IV) claiming neutrons have a positive charge is factually incorrect.