CBSE Class 11 Cell Biology — practice questions
48 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Cell Biology in the app →A feature common to plant sieve-tube cells and mature mammalian RBCs isThe 'powerhouse of the cell' is theA feature common to prokaryotes and many eukaryotes (e.g. plants, fungi) isWhich organelle is the site of protein synthesis?According to the fluid-mosaic model, the cell membrane is composed mainly ofWhich is absent in a prokaryotic cell?Genetic material in a eukaryotic cell is primarily located in theThe cell theory was NOT proposed byWhich cell organelle contains hydrolytic enzymes for intracellular digestion?Plant cells differ from animal cells in havingThe endoplasmic reticulum studded with ribosomes is calledWhich of these is the largest among typical cells/structures?The statement *omnis cellula e cellula* ('every cell arises from a pre-existing cell') was contributed byThe defining structural feature that separates eukaryotic cells from prokaryotic cells isThe smallest known living cell isThe ribosomes of prokaryotic cells are designated asThe small circular DNA molecules found in bacteria, outside the main chromosome, are calledWhich of the following bacterial surface structures is primarily involved in motility?Mesosomes in prokaryotic cells help inThe fluid mosaic model of the cell membrane was proposed byActive transport across the plasma membraneWhich of the following is NOT considered part of the endomembrane system?Smooth endoplasmic reticulum is mainly the site ofThe inner membrane of a mitochondrion is folded intoMitochondria and chloroplasts share which of the following features with bacteria?The microtubule arrangement in the axoneme of eukaryotic cilia and flagella isInside a chloroplast, a stack of disc-shaped thylakoid sacs is called aWhich is NOT one of the three claims of cell theory?The smallest known cell per NCERT isAn example of an unusually large single cell visible to the naked eye isThe single feature that defines a eukaryote vs a prokaryote isIn prokaryotes, the inward folding of the plasma membrane that handles respiration, DNA replication and cell-wBacteria that retain the crystal-violet Gram stain and appear purple are classified asRough ER differs from smooth ER in thatMitochondria and chloroplasts share which key features?Lysosomes are produced by which organelle and contain what?Cilia and flagella share which internal microtubule arrangement?The nucleolus inside the nucleus is responsible forRibosome sizes areThe term 'cell' was coined in 1665 by:Prokaryotic cells DIFFER from eukaryotic cells in that prokaryotes:A structure UNIQUE to plant cells (NOT found in animal cells) is the:Mitochondria are called the 'POWERHOUSE OF THE CELL' because they:The Rough Endoplasmic Reticulum (RER) has its ribosomes attached to perform:Lysosomes are sometimes called the 'SUICIDE BAGS' of the cell because they:Chromoplasts in plants are responsible for:Eukaryotic ribosomes are typically:Cilia and flagella exhibit the characteristic '9 + 2' arrangement of: