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BIO 111 - GENERAL BIOLOGY EXAM
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BIO 111 - GENERAL BIOLOGY EXAM 2023-2024 Hydrogen & Helium - ANSWER The only two elements formed at the beginning of the universe were? Water, Simple Acids & Bases, Simple Salts - ANSWER Among the biologically important groups of inorganic compounds are? Organic Compounds - ANSWER Large complex carbon containing molecules are? Chemical Reactions - ANSWER An element is a substance that cannot be separated into simpler parts by? Oxygen, Carbon, Hydrogen, and Nitrogen - ANSWER Over 96% of an organism's mass is made up of what four elements? Trace Elements - ANSWER Elements required by the body in only very small amounts are called? Protons, Neutrons, and Electrons - ANSWER The three main parts of an atom are the? Protons and Neutrons - ANSWER What composes the atomic nucleus? Electrons - ANSWER What moves rapidly through the mostly empty space surrounding the nucleus? Proton - ANSWER Has a positive charge Neutron - ANSWER Has no charge; Neutral Electrons - ANSWER Has a negative charge Number of protons - ANSWER An atom's atomic number is determined by the _________. Dalton - ANSWER An atomic mass unit (amu) is also called a __________ Atomic Mass - ANSWER The totals number of protons and neutrons in the atomic nucleus Isotope - ANSWER The atomic mass varies, but the atomic number remains constant Radioisotopes - ANSWER Isotopes that are unstable and emit radiation when they decay. Autoradiography - ANSWER Radioactive decay darkens silver grains film. The technique which uses this change in silver grains to detect the presence of radioactivity is called? Electron Shell - ANSWER Electrons with similar energy levels compromise an ____________ Valence electrons - ANSWER The electrons in the outermost energy level of an atom are called _________ The chemical behavior of an atom is determined by its ____________ Determines the number of bonds Chemical Properties - ANSWER All elements in the same vertical column (belonging to the same group) on the periodic table have similar _________ Chemical Compound - ANSWER This consists of two or more different elements that are combined in a fixed ratio 1. Consists of atoms 2. lacks mass 3. is made with at least two different elements Molecule - ANSWER This forms when two or more atoms are joined very strongly Atoms - ANSWER What forms compounds are molecules? The smallest subdivision of an element that retains its chemical properties Chemical Formula - ANSWER Uses chemical symbols to describe the chemical composition of a compound Structural Formula - ANSWER Shows not only the types and numbers of atoms in a molecule but also their arrangement Reactants - ANSWER Substances that participate in the reaction Products - ANSWER Substances formed by the reaction Chemical Bonds - ANSWER Can hold atoms togetherThe benefits of buying summaries with Stuvia:
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