Biology Exam 1 Study Guide Set HW 2024

Biology Exam 1 Study Guide Set HW 2024 The science of life is -Answer-Biology Identify the three of the five basic themes in biology -Answer-The evolution of life, The interactions of living systems, The transmission of information. The cell theory states that all living organisms -Answer-Are composed of basic units called cells If an organism is a eukaryotic, then by definition, it will -Answer-Possess a nucleus Homeostasis in living organisms involves process that -Answer-Maintain a constant internal environment Which of the following is a characteristic of asexual, as opposed to sexual, reproduction? -Answer-A cell splitting in half Which of the following is the most basic level of chemical organization? -Answer-Atom Which of the following is most directly associated with the theory of evolution? -Answer- Changing of populations over time The domain Eukarya includes all the following, except -Answer-Bacteria A good hypothesis -Answer-Represents important conclusions In all organisms, hereditary information is encoded with ______ molecules -Answer- DNA Autotroph -Answer-Can use sunlight and carbon dioxide to make their own food An element is defined as a substance that -Answer-Cannot be broken into similar substances by chemical reactions The particular type of element is determined by the number of -Answer-Protons An atom has six protons and eight neutrons. It's atomic mass is ____ atomic mass units -Answer-14 Isotopes differ from each other with respect to the number of -Answer-Neutrons only Any chemical interaction between atoms: -Answer-Involves only valence electrons How do you correctly identify a reactant from a chemical equation? -Answer-The substances to the left of the arrow are reactants, and to the right of the arrow are called products Which covalent bond involves only two electrons -Answer-Single An atom becomes a cation if -Answer-It loses one or more electrons Magnesium atoms have two electrons in their outermost shell. Because of this, you would expect magnesium to form ions with a charge of -Answer-+2