BIOL 109 QUIZ 1 REVIEW QUESTIONS
AND ANSWERS
lipids - ANSWER-group of naturally occurring molecules that include fats, waxes,
sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides,
diglycerides, triglycerides, phospholipids, and others.
triglycerides - ANSWER-an ester formed from glycerol and three fatty acid groups.
main constituents of natural fats and oils
phospholipid - ANSWER-fat derivatives in which one fatty acid has been replaced by
a phosphate group and one of several nitrogen-containing molecules.
enzymes - ANSWER-speed up reactions by providing an alternative reaction
pathway of lower activation energy
diffusion - ANSWER-net movement of molecules or atoms from a region of high
concentration to a region of low concentration.
osmosis - ANSWER-movement of solvent molecules through a semi-permeable
membrane into a region of higher solute concentration, in the direction that tends to
equalize the solute concentrations on the two sides.
cranial cavity - ANSWER-cavity that contains brain
thoracic cavity - ANSWER-cavity that contains heart and lungs
vertebral cavity - ANSWER-cavity that contains spinal cord
pelvic cavity - ANSWER-cavity that contains bladder, reproductive organs and
rectum
pericardial - ANSWER-around the heart
Body Cavities - ANSWER-see image
atom structure - ANSWER-protons(+), neutrons(neutral), electrons(-)
activation energy - ANSWER-minimum energy needed to start a chemical reaction
chemical bond - ANSWER-attraction between atoms that allows the formation of
chemical substances
covalent bond - ANSWER-a chemical bond that involves the sharing of electron pairs
between atoms
ionic bond - ANSWER-chemical bond that involves the electrostatic attraction
between oppositely charged ions
AND ANSWERS
lipids - ANSWER-group of naturally occurring molecules that include fats, waxes,
sterols, fat-soluble vitamins (such as vitamins A, D, E, and K), monoglycerides,
diglycerides, triglycerides, phospholipids, and others.
triglycerides - ANSWER-an ester formed from glycerol and three fatty acid groups.
main constituents of natural fats and oils
phospholipid - ANSWER-fat derivatives in which one fatty acid has been replaced by
a phosphate group and one of several nitrogen-containing molecules.
enzymes - ANSWER-speed up reactions by providing an alternative reaction
pathway of lower activation energy
diffusion - ANSWER-net movement of molecules or atoms from a region of high
concentration to a region of low concentration.
osmosis - ANSWER-movement of solvent molecules through a semi-permeable
membrane into a region of higher solute concentration, in the direction that tends to
equalize the solute concentrations on the two sides.
cranial cavity - ANSWER-cavity that contains brain
thoracic cavity - ANSWER-cavity that contains heart and lungs
vertebral cavity - ANSWER-cavity that contains spinal cord
pelvic cavity - ANSWER-cavity that contains bladder, reproductive organs and
rectum
pericardial - ANSWER-around the heart
Body Cavities - ANSWER-see image
atom structure - ANSWER-protons(+), neutrons(neutral), electrons(-)
activation energy - ANSWER-minimum energy needed to start a chemical reaction
chemical bond - ANSWER-attraction between atoms that allows the formation of
chemical substances
covalent bond - ANSWER-a chemical bond that involves the sharing of electron pairs
between atoms
ionic bond - ANSWER-chemical bond that involves the electrostatic attraction
between oppositely charged ions
