The buliding blocks of living organisms is cells. Humans have trillions. Our cells are called eukarotic? spelling, because they have “a true kernel” in Greek, or nucleus. It was Robert Hooke in 1665 with a microscopewho discovered and named the cell. It was named after “cellula” which looked like small rooms that monks inhabited.

In contrast with prokaryotic, which means before the kernel ? they don’t have a nucelus ?

Theodor Schwann, and Matthais Schleiden studied animal and plant cells and summarised their conclusions that cells are the structure, organisation and physiology of livining things. Also, the cells has a dual existence as a distinct eneity, and a building block in the construction of organisms.

Later on it was discovered that cells form through division. It was Rudolph Virchow who said “all cells only arise from pre existing cells.”

Plant cells wall are made from cellulose which makes them more rigid tham human cells which are made from fat / lpid? The wall is called a membrane. The fact that some things can pass through the cell wall called permeability, that facts that only some things can go in and out of the cell wall is called selective permeableility.

The water and nutrients in the cell is called the cytoplasm, it contians he water and nutrients in the cell, and the cyto skeleton,.

organelles ?

Centrosomes give the cell structural support?

The centre of the nucleus is called the nucleoplasm?

Endoplasmic reticulum they are made from phopholipid bilayers? There is a rough and smooth er. It contains enzymes which help in the creation of lipids.

The lysosome break down waste in the cell using enzymes.

The nucleus stores the cells dna. dna in cells?

THe dna is held in the nucleus in a substance called chromatin. Humans have 46 chromosomes choromsones and chromatine relationship ? The number of chromosones varies amoungast animals.
The smmoth er stores ions such as sodium ? which the cell may need later on ?

The nucleolus ? makes rna

The m rna or the messenger rna is sent to the ribosomes ? to carry out the orders.

The mitrochondria ? has been compared to the powerplant of the cell.

The rough er helps in the packagining of protein ?

Ribosomes assemble amino acids into poly peptides

The golgi appartus is like a post office, processing and packaging protein. In the golgi appartus is something called golgi bodies. From this the body then makes vessicles ? which have phopholipid membranes

protozoa, flagellum, cilia