ISCI 173 EXAM 1 || WITH CORRECT SOLUTIONS.
the knowledge of basic chemistry, the scientific study of matter, is necessary to understand
many important biological processes correct answers true
matter correct answers anything that occupies space and has mass (substance)
atom correct answers smallest units that retain all of the properties of their type of matter
molecules correct answers are made up of two or more atoms joined by a chemical bond
compounds correct answers molecules made up of two or more different elements
ionic bonds correct answers transfer of electrons
covalent bonds correct answers sharing of electrons
polar correct answers unequal sharing of electrons
nonpolar correct answers equal sharing of electrons
hydrogen bonds correct answers hydrogen atom in a polar covalent molecule is attracted to an
oppositely charged atom
4 Classes of Macromolecules correct answers lipids, proteins, carbohydrates, nucleic acids
polymers correct answers molecules created by joining together smaller molecules called
monomers
true correct answers cells are constantly building and breaking polymers from or into
monomers which requires energy
metabolism correct answers the sum total of all metabolic chemical reactions which involve
building up and breaking down polymers
carbohydrates correct answers molecule consisting of monosaccharide, disaccharide, and
polysaccharide; store energy, provide energy, build macromolecules, and save protein and fat
for other uses within cells, act as target signals, gylcorotein & glycolipid*
lipids correct answers organic compound consisting mainly of carbon and hydrogen atoms
linked by nonpolar covalent bonds and therefore mostly hydrophobic and insoluble in water;
include fats, waxes, phospholipids, and steroids
proteins correct answers speed up chemical reactions in the body, regulate the activity of cells
or organs, transport materials throughout your body
nucleic acids correct answers polymer consisting of many nucleotide monomers; serves as a
blueprint for proteins and, through the actions of proteins, for all cellular structure and
activities; two types are DNA & RNA
the knowledge of basic chemistry, the scientific study of matter, is necessary to understand
many important biological processes correct answers true
matter correct answers anything that occupies space and has mass (substance)
atom correct answers smallest units that retain all of the properties of their type of matter
molecules correct answers are made up of two or more atoms joined by a chemical bond
compounds correct answers molecules made up of two or more different elements
ionic bonds correct answers transfer of electrons
covalent bonds correct answers sharing of electrons
polar correct answers unequal sharing of electrons
nonpolar correct answers equal sharing of electrons
hydrogen bonds correct answers hydrogen atom in a polar covalent molecule is attracted to an
oppositely charged atom
4 Classes of Macromolecules correct answers lipids, proteins, carbohydrates, nucleic acids
polymers correct answers molecules created by joining together smaller molecules called
monomers
true correct answers cells are constantly building and breaking polymers from or into
monomers which requires energy
metabolism correct answers the sum total of all metabolic chemical reactions which involve
building up and breaking down polymers
carbohydrates correct answers molecule consisting of monosaccharide, disaccharide, and
polysaccharide; store energy, provide energy, build macromolecules, and save protein and fat
for other uses within cells, act as target signals, gylcorotein & glycolipid*
lipids correct answers organic compound consisting mainly of carbon and hydrogen atoms
linked by nonpolar covalent bonds and therefore mostly hydrophobic and insoluble in water;
include fats, waxes, phospholipids, and steroids
proteins correct answers speed up chemical reactions in the body, regulate the activity of cells
or organs, transport materials throughout your body
nucleic acids correct answers polymer consisting of many nucleotide monomers; serves as a
blueprint for proteins and, through the actions of proteins, for all cellular structure and
activities; two types are DNA & RNA
