Q1 CELLULAR BASIS OF LIFE Flashcards
is the scientific study of living things.
Biology
Bio meaning
Life
logos meaning
study of
3 branches of biology
zoology, botany, microbiology
study of the
cell – its basic structure and
function.
Cell biology
From Latin word _____, meaning
“small room”
cella
Basic unit of life
cell
is the basic Structural
and functional
unit of living organisms.
cell
is a collection
of ideas and
conclusions from many
different scientists over
time that describes cells
and how cells operate.
Cell theory
3 cell theory
All known living things are
made up of one or more cells.
All living cells arise from
pre-existing cells by division.
The cell is the basic unit of
structure and function in all
living organisms.
he discovered cell
Robert Hooke
Observed living cell
Anton Van Leeuwenhoek
Discovered nucleus
Robert Brown
Named fluid content of
cell as protoplasm
J. E. Purkinje
Proposed all plants are
made up of cells
Matthias Schleiden
Discovered fluid
content of cell
Felix Dujardin`
Proposed all animals
are made up of cells
Theodor Schwann
Proposed cell is the basic
unit of life
Carl Heinrich Braun
Proposed all cells arise
from pre-existing cells
Rudolf Virchow
organism that is made up of only one cell
Unicellular Organisms
example of unicellular organism
Euglena Paramecium Yeast
organism that is made up of more than one cell
Multicellular Organisms
example of multicellular
Plants Animals Fungus
smallest cell
Mycoplasma
Largest cell
Ostrich egg
The structure of a cell as seen under
an electron microscope is called _____
ultrastructure
If we study a cell under a microscope,
we would come across three features
in almost every cell: ______, _____, and ____
plasma membrane,
nucleus and cytoplasm.
Made up of two layers of lipid molecules
in which protein molecules are floating
Plasma Membrane
Regulates entry and exit of substances
in and out of the cell
Plasma Membrane
Non-living and outermost covering of a cell
(plants & bacteria)
cell wall
cell wall is Made up of
cellulose, hemicellulose and
pectin
Nucleus has a double layered covering called
______
nuclear membrane
Colourless dense sap present inside the
nucleus known as
nucleoplasm
Chromosomes contain stretches of DNA
called ____
genes
Control all the cell activities like metabolism,
protein synthesis, growth and cell division
nucleus
Jelly-like material formed by 80 % of water
cytoplasm
RER synthesize:
protein
SER synthesize:
lipids
Modifies, sorts and packs materials
synthesized in the cell
golgi body
he discovered the golgi body
camillo golgi
Small, spherical, single membrane sac that help in digesting of large molecules
lysosome
Single membrane sac filled with liquid
or sap (water, sugar and ions)
vacuole
Synthesize energy rich compound ATP
mitochondria
are double membrane-bound
organelles found inside plants and
some algae.
plastids
They are responsible for activities
related to making and storing food.
plastids
are plastids that
produce and store pigments
Chromoplasts
are colourless
plastids that store foods.
leucoplast
Double membrane-bound organelles found
mainly in plant cells
Chloroplasts
Convert light energy into chemical energy
in the form of food
Chloroplasts
are hollow, cylindrical structures
made of microtubules
Centrosome
Form spindle fibres which help in the movement
of chromosomes during cell division
Centrosome
Formed by microtubules and microfilaments and determines shape
Cytoskeleton
