NATS 1675 Lecture Notes - Protoplasm, Chromosome, Monera
Document Summary
Nats 1675 human development lecture 1. Chapter 1 general introduction useful to read. 419-437) up to changes in chromosomal number. Microscopic structures that can be described as self-reproducing bags of chemicals. Box shaped, surrounded by a cell membrane, contains thick liquid substance, nucleus cells are the fundamental structural units or building blocks of all. An organism is defined as any living thing cells are composed of protoplasm contained in a membrane (protos = first; plasma = something formed or molded) Protoplasm is the essential material of all cells in living organisms. Life depends on, and arises out of, the continuous chemical activity that occurs in protoplasm. A colloidal system is a permanent suspension of finely divided particles including large molecules of carbohydrates, lipids (fats), proteins and nucleic acids (rna & dna). Kingdoms: monera bacteria & blue-green algae. Bacteria have no true nucleus, but they do have dna. Blue-green algae do have chlorophyll (green pigment involved in photosynthesis)