BI110 Chapter Notes - Chapter 2: Animalcule, Endocytosis, Ribosome
Document Summary
Ocellus is common in a number of insects, arthropods, and molluscs. The vertebrate eye (human eye) is very similar in structure and function to the eye of certain molluscs (squids and octopi). Light sets the biological clock, but circadian rhythms aren"t a direct result of changes in the light environment. All organisms are composed of 1 or more cells. The cell is the functional unit of life. Cells were first observed by robert hooke in 1600s and by anton van leeuwenhoek. Hook coined the term cellulae, van lee described bacteria and protists as animalcules. Robert brown first to observe nucleus in 1800s. Mathias schleden: plants are made of cells and nucleus is important for development. Theodor schwann: all animals are made up of cells. Rudolf virchaw: cells only arise from pre-existing cells. They chemically synthesizes this gene in a lab. They also worked with bacteria that is very similar to mycoplasma.
