BIO 101 Exam 1 portage learning Questions with correct Answers latest 2023

What is Biology? - Study of life; encompasses everything -biomolecular biology and technology have brought around a new era for biology What are the major characteristics of Life? - 1) reproduction (DNA (deoxyribose nucleic acid); double helix shape; stores genetic info) 2) cellular repsiration (used to creat energy) (metabolism; need it to perform basic functions of life; food (carbs, proteins, lipids/fats, vitamins/minerals) 3) adaptation/evolve (over large periods of times traits of organizations) modified 4) growth and development (DNA lays out the "plan") 5) organization (very specific; organization of organs/structure) 6) cells (basic building blocks of life; need only one to be considered living) 7) respond (response to stimuli (light, touch, heat, etc.); need in order to survive) What is a cell? - - basic building blocks of life - not always apparent; first seen with a microscope - cells were discovered by Hook in 1655 - first cells discovered were from cork - theory wasn't generally accepted due to the challenge of trying to convince people of this drastic change What is cell theory? - - proposed in 1800's - lowest level of structure perfoms all chracteristics of life - arise from previously existing cells What is metabolism? - - energy breakdown; needed for food - glucose is the "best" - C6H12O6 (formula for glucose) - breaks (catabolic reaction) down to carbon dioxide and water [ CO2 + H2O]