Cell mcqs Flashcards
who invented the compound microscope?
Z.Janssen
Who developed the electron microscope?
Knoll and Ruska
The smallest cell in the living world is?
Mycoplasma
“All living cells arise from pre existing cells” this theory was given by?
Rudolf virchow
Cells are sometimes interconnected with?
Cell junctions
What happens in hypotonic solutions?
ENDOosmosis
What happens in hpertonic solutions?
EXOosmosis
Bursting of a plant cell due to endosmosis is also called?
Haemolysation
The shrinkage of the plasma membrane away from the cell wall is also called?
Plasmolysis
Bursting of an animal cell due to endosmosis is also called?
Crenation
Give one example of an isotonic solution
Ringers solution
plant cell wall is made of ______, bacterial cell wall is made up of ______ and fungal cell wall is made up of ________.
cellulose, peptidoglycan (Murein), chitin (fungal cellulose).
what is the functional unit of dna?
Genes
______ is the fluid part of the cytoplasm
Cytosol
Chromatin material is made up of _________.
DNA+Histone proteins
Name double membrane bound organelles
Nuclues, Mitochondria, Plastids
Name single membrane bound organelles
ER, Golgi apparatus, lysosomes and vacuoles
Name some membraneless organelles
Ribosomes and centrosomes
Er was discovered by?
Porter
Where is ER absent?
Erythrocytes and prokaryotes
What does the SER synthesise?
Lipds, Fats and Glocogen
which organelle synthesises steroid hormones?
Smooth Endoplasmic reticulum
In plant cells, golgi apparatus is present as single unit organelles called ________>
Dictyosomes
Lysomes were discovered by?
Christian D duve
Mitochondria was discovered by?
Koliker and Benda
The inner membrane is deeply folded and forms ______.
Cristae
Cristae is studded with rounded boundies known as _____. Also known as _________.
Oxysomes, F0,F1 particles
What are the two semi autonomous organelles?
Mitochondria and Plastids
Mitochondria is absent in ______.
Matyre mammalian RBCs, Prokaryotes and anaerobic eukaryotes
