Cell - The unit of life Flashcards
The structural and fundamental unit of life is
cell
Living cell was first described by
Anton Von Leeuwenhoek
The nucleus was discovered by
Robert brown
The structural components of a cell were well defined after the discovery of _____
electron microscope
A german botanist who observed that all plants are composed of different kinds of cells which form tissues was
Matthias Schleiden
The thin outer layer of animal cells, now known as plasma membrane, was first reported by
Theodore Schwann
The scientists who together formulated the cell theory were ____ and _____
Schleiden and Schwann
The scientist who first explained that cells divide and new cells form from pre-existing cells was
Rudolf Virchow
The outer boundary of a typical plant cell is _____
cell wall
DNA containing chromosomes are structures located inside _____
nucleus
The cells which possess membrane bound nuclei are called
Eukaryotic
Cells which lack membrane bound nucleus are called
prokaryotic
The cell volume is occupied by semi-fluid matrix is called as
cytoplasm
Majority of cellular activities which keep a cell in living state are performed in ____
cytoplasm
The non-membrane bound organelles found in both prokaryotic and eukaryotic cell is
ribosomes
The organelle which contains ribosomes and is specifically present in plants is
chloroplast
Apart from cytoplasm, organelles containing ribosomes in animals are
Mitochondria and rough ER
The type of ER possessing ribosomes is
rough ER
A non membrane bound organelle which helps in cell division is
centrosome
The smallest living cells are
Mycoplasma
The length of mycoplasmas is
0.3um
The size of bacteria ranges from
3 to 5im
The largest isolated single cell is an egg of _____
ostrich
Diameter of a human RBC is
7um