Which of the following can be made into crystal?
  • A bacterium
  • An Amoeba
  • A virus
  • A sperm
A cell will swell up if
  • the concentration of water molecules in the cell is higher than the concentration of water molecules in the surrounding medium.
  • the concentration of water molecules in the surrounding medium is higher than water molecules concentration in the cell.
  • the concentration of water molecules is same in the cell and in the surrounding medium.
  • concentration of water molecules does not matter.
Chromosomes are made up of
  • DNA
  • Protein
  • DNA and protein
  • RNA
Which of these is not related to endoplasmic reticulum?
  • It behaves as a transport channel for proteins between nucleus and cytoplasm.
  • It transports materials between various regions in the cytoplasm.
  • It can be the site of energy generation.
  • It can be the site for some biochemical activities of the cell.
Following are a few definitions of osmosis:
  • Movement of water molecules from a region of higher concentration to a region of lower concentration through a semi-permeable membrane.
  • Movement of solvent molecules from its higher concentration to lower concentration.
  • Movement of solvent molecules from higher concentration to lower concentration of solution through a permeable membrane.
  • Movement of solute molecules from lower concentration to higher concentration of solution through a semi permeable membrane.
Plasmolysis in a plant cell is defined as
  • breakdown (lysis) of plasma membrane in hypotonie medium
  • shrinkageof cytoplasm in hypertonic medium
  • shrinkage of nucleoplasm
  • none of them
Which of the following are covered by a single membrane?
  • Mitochondria
  • Vacuole
  • Lysosome
  • Plastid
Find out the false sentence.
  • Nucleus is involved with the formation of lysosomes.
  • Nucleus, mitochondria and plastid have DNA, hence they are able to make their own structural proteins.
  • Mitochondria is said to be the power house of the cell as ATP is generated in them.
  • Cytoplasm is called as protoplasm.
Find out the correct sentence.
  • Enzymes packed in lysosomes are made through RER (rough endoplasmic reticulum).
  • Rough endoplasmic reticulum and smooth endoplasmic reticulum produce lipid and protein respectively.
  • Endoplasmic reticulum is rélated to the destruction of plasma membrane.
  • Nucleoid is present inside the nucleoplasm of eukaryotic nucleus.
Which cell organelle plays a crucial role in detoxifring many poisons and drugs in a cell?
  • Golgi apparatus
  • Lysosomes
  • Smooth endoplasmic reticulum
  • Vacuoles
The proteins and lipids, essential for building the cell membrane, are manufactured by
  • rough endoplasmic reticulum
  • golgi apparatus
  • plasma membrane
  • mitochondria
The undefined nuclear region of prokaryotes is also known as
  • nucleus
  • nucleolus
  • nucleic acid
  • nucleoid
The cell organelle involved in forming complex sugars from simple sugars are
  • endoplasmic reticulum
  • ribosomes
  • plastids
  • golgi apparatus
Which out of the following is not a function of vacuole?
  • Storage
  • Providing turgidity and rigidity to the cell
  • Waste excretion
  • Locomotion
Amoeba acquires its food through a process, termed
  • exocytosis
  • endocytosis
  • plasmolysis
  • exocytosis and endocytosis both
Cell wall of which one of these is not made up of cellulose?
  • Bacteria
  • Hydrilla
  • Mango tree
  • Cactus
Silver nitrate solution is used to study
  • endoplasmic reticulum
  • golgi apparatus
  • nucleus
  • mitochondria
Organelle other than nucleus, containing DNA is
  • endoplasmic reticulum
  • golgi apparatus
  • mitochondria
  • lysosomes
Kitchen of the cell is
  • mitochondria
  • endoplasmic reticulum
  • chioroplast
  • golgi apparatus
Lipid molecules in the cell are synthesised by
  • smooth endoplasmic reticulum
  • rough endoplasmic reticulum
  • golgi apparatus
  • plastids
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