BIOLOGY FINAL EXAM QUESTIONS AND ANSWERS GRADED A+!!!

List the characteristics of all living things. - ANS 1) All living things are made up of one or more cells. 2) All living things respond to their environment. 3) All living things are able to reproduce. 4) All living things need energy from metabolism. What is a group of genetically similar organisms that can produce fertile offspring? - ANS a species All living organisms are composed of these. - ANS cells define homeostasis - ANS regulation and maintainance of constant iternal conditions in an organism. The process by which organisms make more of their own kind. - ANS reproduction A scientist noticed that the number of salamanders in ponds was declining. This is an example of what step in the scientific method? - ANS observation Name the order in which the steps of scientific investigations are most typically applied. - ANS Observation, Hypothesis, Predictions, Controlled Testing, Theory, Verification The English physician Ronald Ross wanted to find the cause of malaria. Based on his observations, Dr. Ross suggested that the Anopheles mosquito might spread malaria from person to person. What part of the scientific method is this suggestion? - ANS hypothesis A hypothesis is a: - ANS Educated guess to how an experiment will turn out. What is a planned procedure to test a hypothesis called? - ANS experiment The variable that is measured in an experiment is the ________ variable. - ANS The dependent variable What is a scientific theory? - ANS A theory that explains observations in an experiment. Name the 3 parts of an atom. - ANS protons, neutrons, and electrons What is the smallest particle of matter that can retain the chemical properties of that matter? - ANS Carbon Atoms What is a substance that is composed of only one type of atom? - ANS an element What kind of molecule has a partial positive charge on one side and a partial negative charge on the other side? - ANS a polar molecule Describe an ionic bond. - ANS When atoms lose or gain electrons. Why do oil and water not mix when put into the same container? - ANS Water is polar and oil is nonpolar. Define organic and inorganic. Give examples of each. - ANS Inorganic compunds usually don't have carbon; organic compounds usually do. Inorganic: Dihydron Monoxide, organic: Methane All organic compounds contain the element...? - ANS carbon List some organic monelcules that are classified as carbohydrates. - ANS sugar