Cell theory and its structure Flashcards
He invented the very first microscope in 1590
Zacharias Janssen
He made his own microscope and observed a bark of a cork oak tree and discovered these comparement looking called “cells”
Robert Hooke
He is known as the father of biology and observed animacules
Anton Van Leeuwenhoek
He stated that plants are made up of cells
Matthias Schleiden
He concluded that animals are made up of cells
Theodore Schwann
According to him, cells come from pre-existing cells through cell division
Rudolf Virchow
According to this theory, cells are basic unit of life, come from pre-existing cells and all living things are made up of cells.
Cell theory
Modern cell theory
- Cells carry genetic materials
- All cells are the same in structure and chemical compositions
- Energy flow or biochemical process occur within cells
Known as the little organs that support the life of a cell
Organelles
A thin double layer of fat and protein that can be found in animal and plants that act as a barrier to the cell
Cell membrane/Plasma membrane
It is a rigid membrane surrounding plant cells that are made up of cellulose. It also gives cell protection, support and structure.
Cell wall
It was discovered by Robert Brown in 1831. It is a part of a cell that stores DNA, contains hereditary information and regulates all cell activities.
Nucleus
It is a spherical body found inside the nucleus
Nucleolus
What are the functions of nucleolus?
produces and assembles ribosomes
It is a small particle consist of RNA and it exist freely in cytoplasm or on the surface of rough ER
Ribosome
Function of ribosome
Synthesis of protein
What does ER stands for?
Endoplasmic Reticulum
What is the difference between rough and smooth ER
Rough ER has ribosomes while smooth ER do not have.
It is a series of interconnected membranous sacs and tubules and connected with the outermembrane of the nucleus
Endoplasmic Reticulum
It is an ER that modifies protein and makes phospolipids for cellular membranes.
Rough ER
It is an ER that produces carbohydrates,lipids, and steroids. Detoxicating toxins and storage of calcium irons
Smooth ER
A series of flattened sac-like membranes that resemble the stack of pancakes.
Golgi Body
What is the function of a golgi body
store and distribute lipids and proteins.
Exclusive for animals, it is a spherical bodies containing digestive enzymes.
Lysosome
