Connective Tissues
abidaThe tissue with loose arrangement of cells and the cells are scattered in an extracellular matrix are called connective tissue This non living matrix consists of a web of fibers.…
DEFINITIONS AND KEY POINTS FOR OBJECTIVES of STRUCTURE AND FUNCTION OF BIOMOLECULE
rubabTERMS DEFINITIONS Carbohydrates Carbohydrates are polyhydroxy aldehydes or ketones. Disaccharides The sugars composed of mo monosaecharidesare called disaccharides.These sugars are linked bn glxcosidic linkage Sucrose It is a disaccharide formed …
DEFINITIONS AND KEY POINTS FOR OBJECTIVES FOR Mineral uptake
sanaTERMS DEFINITIONS Clay Clay is an inorganic material. It consists of aluminium and silicon oxides. Free space The term free space is used for the part of the plant cell …
TISSUES
The group of similar cells which performs same functions is called tissue. There are four types of tissues: epithelial tissues, connective tissues, muscles tissues and nerve tissues. Epithelial tissues The…
Nomenclature
sidraThe assignment of a distinctive name to each species is called nomenclature. Problems with common names Common names have two problems: I. First, common names vary from country to country.…
NUCLEUS
Nucleus contains most of the genes that control the cell. It is the most conspicuous organelle in the eukaryotic cell. Its average diameter is about 5. It performs two major…
Nucleic Acid – Discovery , Significance & Types
Nucleic acid is polymer of nucleotides. Discovery A German Chemist. Friedrich Miescher. discovered Nucleic in 1869. Ile discovered DNA only four years after the publication of Menders work. Miescher extracted…
ANIMAL SYSTEMATICS (CLASSIFICATION)
saadiaANIMAL SYSTEMATICS (CLASSIFICATION) Following groups used in animal classification: 1. Monophyletic Groups: The groups showing similarities due to single ancestors are called monophyletic groups. The classification based on monophyletic groups…
VACOULES AND VESICLES
Vacuoles and vesicles are membrane-enclosed sacs within the cell. But vacuoles are larger than vesicles. Vacuoles have various functions. They form food by phagocytosis. Many freshwater protists have contractile vacuoles…
ESSENTIAL ELEMENT
The elements which are needed by the plants for normal and healthy life are called essential elements. Only 16 elements, are essentigl elements. -Mere are two ty pes olessential elements:…