Category: Cell Biology

Cell biology is scientific study of cells including structure, physiological properties, organelles, cell division, interaction to environment and death.

plant cell

Plant Cell

  Plant cell is eukaryotic cell. It shares some features with animal cells such as nucleus, endoplasmic reticulum, Golgi body, vesicles, mitochondria, ribosomes and cytoskeleton. Plant cell has organelles called plastids…. Read more »

animal cell

Eukaryotic Cell

Eukaryotic cells are typically 10-100 µm in diameter which are larger than prokaryotic cells. Eukaryotic cells (eukaryotic is from the Greek eu, true, and karyon, kernel, here referring to the nucleus)… Read more »

Mitochondrion

Mitochondrion (plural, mitochondria) is found abundantly in eukaryotic cells. It is about 1 to 10μm long. Eukaryotic cells have one or more mitochondria. The number of mitochondria is directly proportionally… Read more »

Animal Cell

Animal cells have many organelles such as nucleus, endoplasmic reticulum, Golgi body, vesicles and mitochondria. Animal cells have non-membranous structure such as ribosomes and cytoskeleton. Some animal cells have flagella… Read more »

Golgi Bodies and Vesicles

Golgi bodies are flattened membranous sacs and look like pancake. Golgi bodies play an central role in manufacturing, warehousing, sorting and shipping. It contains enzymes. Products from endoplasmic reticulum are… Read more »

Endoplasmic Reticulum

Endoplasmic reticulum is membrane system continuous from nuclear envelope and extends to cytoplasm. The word endoplasmic means “within the cytoplasm,” and reticulum is Latin for “little net”. In many eukaryotic… Read more »

nucleus, cell

Nucleus

Eukaryotic cells protect their DNA in the nucleus. It contains most the genes of eukaryotic cells except some are located in mitochondria and chloroplast. It is about 5µm in diameter…. Read more »

DNA

DNA

Nucleic acid Nucleic acid is polynucleotide. Nucleotide is the building block of nucleic acid. There are two types of nucleic acids: DNA and RNA (ribonucleic acid). Nucleotide Nucleotide consists of… Read more »

Mitosis

Mitosis is a process where the cell divides and the daughter cells have the same number of chromosomes with the parent cell. Mitosis occur in somatic cells. Mitosis plays an… Read more »

Mutation

Mutation is an unpredictable, random and spontaneously changes in genetic material. Different alleles of a gene contain slightly different sequence of base. It is caused by several environmental factors: Ionizing radiation… Read more »