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Biology Cumulative Exam with Questions and 100% Correct Answers
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Biology Cumulative Exam with Questions and 100% Correct Answers
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Biology Cumulative Exam with Questions and100% Correct Answers
Atoms - ✔✔Smallest particles that retain the properties of an element.
Protons - ✔✔postive charge. Found in the nucleus
Neutron - ✔✔Neutral charge. found in Necleus
Electron - ✔✔Negative charge. obrits around the necleus
Isotopes - ✔✔Various forms of an elements
Example: C12, C13 and C14
Covalent Bond - ✔✔Two atoms with similar electronegativity and unpaired electrons sharing
a pair of electrons.
Nonpolar Covalent Bond - ✔✔Atoms sharing electrons equily
Polar Covalent Bond - ✔✔Atoms with differnt electronegativity and do not share elctrons
equilly.
Ionic Bonds - ✔✔A strong mutual attraction between two oppositely charges ion with a large
difference in electronegativity.
Hydrogen Bonds - ✔✔A weak attraction between a highly electronegativity atoms.
, Carbohydrates - ✔✔Most plentiful biological molecules in the biospehere
Lipids - ✔✔Fatty, oily or waxy organic compounds that are insoluble in water.
Triglycerides - ✔✔Most abundant energy source in vertebrates.
Phospholipids - ✔✔Most abundant lipid in cell membrane
Proteins - ✔✔An organic compound composed of one or more chains of amino acids
DNA - ✔✔Two chains of nucleotides twisted together into a double helix and held by
hydrogen bonds
RNA - ✔✔Important in protein synthesis
Activation Energy - ✔✔The mimimal amount of energy needed to get a reaction started.
Enzyme - ✔✔In most proteins and can be reused.
Coenzymes - ✔✔organic confactors that act as a cofactors.
Phosphorylation - ✔✔a phosphate-group transfer
Redox Reaction - ✔✔A molecule that gives up electrons is oxides.
Autotroph - ✔✔Harvest energy directly from the environment.
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