Droplet nuclei
particles 1-10 um in diameter, implicated in spread of airborne infection; the dried residue formed by evaporation of droplets coughed or sneezed into the atmosphere or by aerosolization of infective material.
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
This tutorial deals with the structure and function of flowers, fruits, and seeds. Also included here are the types of f..
The endoplasmic reticulum and Golgi apparatus are the organelles involved in the translation step of protein synthesis a..
This tutorial describes the independent assortment of chromosomes and crossing over as important events in meiosis. Read..