p p p p p p p
TH EXPERTLY AND CORRECTLY ANSWERED QUESTIO
p p p p p
NS| ACE YOUR GRADES!!! p p p
What are covalent bonds? - Correct Answer-
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Covalent bonds are formed when atoms share electrons to become stable with fille
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d
outer shells p
What are ionic bonds? - Correct Answer-
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2 oppositely charged atoms form this bond when electrons are transferred from on
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e atom to another atom
p p p p
What are hydrogen bonds? - Correct Answer-
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Weak attraction between positive end of one polar molecule and negative end o
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f another polar molecule; formed between water molecules
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Define ion - Correct Answer-When atoms gain or lose electrons, they become ions.
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Define synthesis reaction - Correct Answer-
p p p p p
Two or more atoms or molecules are joined together
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,Define decomposition reaction - Correct Answer-
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Larger molecules are broken down into smaller ones
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Define exchange reaction - Correct Answer-Parts of molecules trade places
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Define reactant - Correct Answer-The starting materials of the reaction -
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the atoms, ions, or molecules
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Define product - Correct Answer-
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Substances formed at the end of the chemical reaction
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Define catalyst - Correct Answer-influence the rates of chemical reactions
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What is an acid? - Correct Answer-Electrolytes that release hydrogen ions in water
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What is a base? - Correct Answer-
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Electrolytes that release ions that combine with hydrogen ions in water
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,What is a salt? - Correct Answer-
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Acids and bases that react to form water and electrolytes
p p p p p p p p p
What is a pH scale? - Correct Answer-
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represents the concentration of hydrogen ions [H+] in solution
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Neutral solution - Correct Answer-
p p p p
pH 7; indicates equal concentrations of
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H+ and OH-
p p
Acidic solution - Correct Answer-
p p p p
pH less than 7; indicates a greater concentrati
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on of H+p p
Basic solution - Correct Answer-
p p p p
pH greater than 7; indicates a greater concentration of OH-
p p p p p p p p p
What is the difference between anatomy and physiology? - Correct Answer-
p p p p p p p p p p
Anatomy is the study of the structure of body parts, whereas physiology is the stud
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y of the function of body parts
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What are the levels of organization? - Correct Answer-
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subatomic particles, atom, molecule, macromolecule, organelle, cell, tissue, organ,
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organ system, organism
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, What are the requirements of life? - Correct Answer-
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Water, food, oxygen, heat, pressure
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What are the characteristics of life? - Correct Answer-
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Movement (internal or gross); Responsiveness (reaction to internal or external cha
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nge); Growth (increase in size without change in shape); Reproduction (new organi
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sms or new cells); Respiration (use of oxygen; removal of CO2); Digestion (breakdo
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wn of food); Absorption (movement of substances through membranes and into fl
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uids); Circulation (movement within body fluids); Assimilation (changing nutrients i
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nto chemically different forms); Excretion (removal of metabolic wastes)
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Define homeostasis - Correct Answer-Body's maintenance of a stable environment
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What is a homeostatic mechanism? - Correct Answer-
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the body maintains homeostasis through a number of self-
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regulating control systems; examples are regulating body temperature and pressur
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e sensitive receptors to regulate body pressure
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Define matter - Correct Answer-
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Anything that takes up space and has mass (weight). It is composed of elements.
p p p p p p p p p p p p p