NEET UG Cell: The Unit of Life — practice questions
79 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice NEET UG Cell: The Unit of Life in the app →Cells that possess a membrane-bound, well-organised nucleus are called:Cells that lack a membrane-bound nucleus are called:The scientist who first observed and described a living cell was:The nucleus of the cell was discovered by:Ribosomes are organelles that are:A rigid cell wall is a characteristic feature of:The organelle known as the 'powerhouse of the cell' is the:Prokaryotic cells characteristically lack:The semi-fluid matrix that occupies the volume of the cell and hosts most chemical reactions is the:Within the nucleus, the genetic material DNA is organised into:The principal site of protein synthesis in the cell is the:According to cell theory, all cells arise:In a plant cell, ribosomes are found in the cytoplasm and also within the:The cell theory in its currently accepted form was finalised byThe two principal tenets of modern cell theory are thatWhich of the following organisms is NOT a prokaryote?The four basic shapes of bacteria areThe 'powerhouse of the cell' is theRibosomes in eukaryotic cytoplasm are of which type?Plastids that store starch in tubers like potato are calledCilia and flagella are made up ofPlasmid isThe cell wall provides the bacterium withGram-positive and Gram-negative bacteria are distinguished byIn bacteria, the infoldings of the plasma membrane that form mesosomes function inWhich of the following is NOT a function of the cytoskeleton?The endoplasmic reticulum with attached ribosomes isGolgi apparatus is primarily concerned withLysosomes are formed by which organelle?In mitochondria, the increase in surface area for the respiratory enzymes is achieved byChloroplast pigments responsible for trapping light energy reside in theThe S in '70S' and '80S' refers toWhich of the following is a feature of the nuclear envelope?The double-membrane organelles of plant cells areThe 'fluid mosaic model' of the plasma membrane was proposed byWhich statement BEST distinguishes prokaryotic from eukaryotic ribosomes?Which of the following is consistent with the endosymbiotic origin of mitochondria?In chloroplasts, the Calvin cycle (light-independent reactions) takes place in theIn a eukaryotic cell, lysosomal enzymes work atCentrioles are seen inWhich statement about glyoxysomes is CORRECT?Which organelle is responsible for the addition of carbohydrates to lipids and proteins (glycosylation)?The structure that holds sister chromatids together during cell division is theThe 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: