Cell Biology I
Indicate three differences between prokaryotic cells and eukaryotic cells.
Size (Eukaryotic cell is bigger than prokaryotic cells)
Organelles (There are no organelles in prokaryotic cells)
Nucleous (There is no nucleous in Prokaryotic cells)
What is the function of the nucleolus?
It make ribosomes
Indicate the first point of Cell Theory?
The cell is the structural unit of all living organisms
Theodor Schwann and Matthias Schleiden explained...
The first points of Cell Theory:
1.Cells are the structural units of all living organisms
2.Cells are the functional units of all living organisms
What is the function of plasma membrane?
It separates the cytoplasm from the environment.
What is the function of vacuoles?
They store subtances (mainly water)
Indicate the second point of Cell Theory
The cell is the functional unit of all living organisms
Rudolf Vichow explained...
The third point of Cell Theory:
Each cell comes from a pre-existing cell
What is the dunction of mitochondria?
They produce energy for the cell
Explain the function of lysosomes
They digest and recycle the waste products
Indicate the third point of the Cell Theory
Each cell comes from a pre-existing cell
Lynn Margulis suggested the...
Endosymbiotic theory
What is the function of ribosomes?
They produce proteins
What is the cytoplasm?
It is a jelly-like substance that contaíns the organelles
Explain the contribution of Santiago Ramón y Cajal
He used the microscope to discover the neurons, the cells that make up the nervous system.
Chromosomes are
They are condensed chains of DNA
What is the function of the Golgi´s Body?
It modifies the proteins in its usable shape
Indicate three important characteristics of plant cells
Big central vacuole
Chloroplasts
Cell wall
Indicate the three points of Cell Theory
Cell is the structural unit of living organisms.
Cell is the functional unit of living organisms.
Each cell comes from a pre-existing cell
Chromatin is...
Uncondensed chains of DNA