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Which of the following can be made into crystal?

A SpermA VirusAn AmoebaA Bacterium

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A cell will swell up if

Concentration of water molecules does not matterThe concentration of water molecules is same in the cell and in the surrounding mediumThe concentration of water molecules in surrounding medium is higher than water molecules concentration in the cellThe concentration of water molecules in the cell is higher than the concentration of water molecules in surrounding medium

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Chromosomes are made up of

RNADNA and proteinproteinDNA

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Which of these options are not a function of Ribosomes?
(i) It helps in manufacture of protein molecules
(ii) It helps in manufacture of enzymes
(iii) It helps in manufacture of hormones
(iv) It helps in manufacture of starch molecules

(iv) and (i)(iii) and (iv)(ii) and (iii)(i) and (ii)

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Which of these is not related to endoplasmic reticulum?

It can be the site for some biochemical activities of the cellIt can be the site of energy generationIt transports materials between various regions in cytoplasmIt behaves as transport channel for proteins between nucleus and cytoplasm

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Following are a few definitions of osmosis (Read carefully and select the correct definition)

Movement of solute molecules from lower concentration to higher concentration of solution through a semipermeable membraneMovement of solvent molecules from higher concentration to lower concentration of solution through a permeable membraneMovement of solvent molecules from its higher concentration to lower concentrationMovement of water molecules from a region of higher concentration to a region of lower concentration through a semipermeable membrane

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Plasmolysis in a plant cell is defined as

none of themshrinkage of nucleoplasmshrinkage of cytoplasm in hypertonic mediumbreak down (lysis) of plasma membrane in hypotonic medium

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Which of the following are covered by a single membrane?

PlastidLysosomeVacuoleMitochondria

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Find out the false sentences

Cytoplasm is called as protoplasm.Mitochondria is said to be the power house of the cell as ATP is generated in them.Nucleus, mitochondria and plastid have DNA; hence they are able to make their own structural proteinsGolgi apparatus is involved with the formation of lysosomes

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Find out the correct sentence

Nucleoid is present inside the nucleoplasm of eukaryotic nucleusEndoplasmic reticulum is related with the destruction of plasma membraneRough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectivelyEnzymes packed in Lysosomes are made through RER (rough endoplasmic reticulum)

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Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?

VacuolesSmooth endoplasmic reticulumLysosomesGolgi apparatus

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The proteins and lipids, essential for building the cell membrane, are manufactured by

mitochondriaplasma membranegolgi apparatusrough endoplasmic reticulum

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The undefined nuclear region of prokaryotes are also known as

nucleoidnucleic acidnucleolusnucleus

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The cell organelle involved in forming complex sugars from simple sugars are

golgi apparatusplastidsribosomesendoplasmic reticulum

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Which out of the following is not a function of vacuole?

LocomotionWaste excretionProviding turgidity and rigidity to the cellStorage

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Amoeba acquires its food through a process, termed

exocytosis and endocytosis bothplasmolysisendocytosisexocytosis

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Cell wall of which one of these is not made up of cellulose?

CactusMango treeHydrillaBacteria

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Silver nitrate solution is used to study

mitochondrianucleusgolgi apparatusendoplasmic reticulum

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Organelle other than nucleus, containing DNA is

lysosomemitochondriagolgi apparatusendoplasmic reticulum

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Kitchen of the cell is

golgi apparatuschloroplastendoplasmic reticulummitochondria

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Lipid molecules in the cell are sythesized by

plastidsgolgi apparatusrough endoplasmic reticulumsmooth endoplasmic reticulum

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Cell arises from pre-existing cell was stated by

SchleidenHookeVirchowHaeckel

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Cell theory was given by

HaeckelHookeVirchowSchleiden and Schwann

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The only cell organelle seen in prokaryotic cell is

lysosomesplastidsribosomesmitochondria

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Organelle without a cell membrane is

nucleuschloroplastgolgi apparatusribosome

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1 µm is

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Lysosome arises from

mitochondrianucleusgolgi apparatusendoplasmic reticulum

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Living cells were discovered by

Robert BrownLeeuwenhoekPurkinjeRobert Hooke

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Select the odd one out

Plasma membranes contain chitin sugar in plants.Molecules soluble in organic solvents can easily pass through the membrane.Membranes are made of organic molecules like proteins and lipids.The movement of water across a semi permeable membrane is affected by the amount of substances dissolved in it.