Module 1 Portage exam Questions And Answers 2022

what is microbiology * Answer-the study of microbes (microorganisms and viruses) and their biological processes what is the smallest biological unit of life * Answer-cell what is a macromolecule * Answer-a complex molecule that is composed from smaller subunits what are the four main types of macromolecules * Answer-Proteins, nucleic acids, lipids and polysaccharides what various functions do proteins have in the cell * Answer--facilitate the movement of materials in or out of a cell -act as enzymes that catalyze, or speed up, biochemical processes -play a structural role - enable movement two major types of nucleic acids * Answer-DNA and RNA what is the role of DNA * Answer-contains a vast amount of hereditary information and is responsible for the inheritable characteristics of living organisms what is the role of RNA * Answer-is responsible for deciphering the hereditary information in DNA and using it to synthesize proteins. what are nucleic acids * Answer-chemical molecules that carry genetic information within the cell what is the plasma membrane composed of * Answer-composed of lipids (hydrophobic hydrocarbons) what is the function of the plasma membrane * Answer-a surrounding barrier that separates the inside of the cell from the outside surrounding environment - restricts the movement of materials either in/out of the cell what is influx (plasma membrane) * Answer-allowing a cells to absorb and keep what is needed