CSULB BIOL 200 EXAM 1 WITH 100%
CORRECT ANSWERS
matter - ANSWER-anything that occupies space
atom - ANSWER-smallest unit of matter that retains elemental properties
element - ANSWER-type of atom that has certain characteristics
atomic mass - ANSWER-protons + neutrons
chemical bonds - ANSWER-interactions between atoms
protons - ANSWER-positively charged particles
neutrons - ANSWER-the particles of the nucleus that have no charge
electrons - ANSWER-negatively charged particles
covalent bonds - ANSWER-sharing of electrons
ionic bonds - ANSWER-transfer of electrons
proteins - ANSWER-chains of amino acids, enzymes that make chemical reactions
occur
nucleic acids - ANSWER-DNA and RNA
organic compound - ANSWER-contains at least one carbon-hydrogen bond
inorganic compound - ANSWER-does not contain carbon-hydrogen bond
polar covalent bonds - ANSWER-unequal e- sharing
prokaryotic cell - ANSWER-small, less complex, single celled organisms, bacteria
eukaryotic cell - ANSWER-large, more complex, single or many cells, plants, fungus,
animals, protists
diffusion - ANSWER-natural process of particles spreading out (high concentration to
low concentration)
, osmosis - ANSWER-is diffusion of water across a semi-permeable membrane
isotonic - ANSWER-describes a solution whose solute concentration is equal to the
solute concentration inside a cell
hypertonic - ANSWER-having a higher concentration of solute than another solution
hypotonic - ANSWER-having a lower concentration of solute than another solution
passive transmembrane transport - ANSWER-does not require energy (high to low
concentration)
active transmembrane transport - ANSWER-requires energy (low concentration to high
concentration)
smooth ER - ANSWER-Makes lipids and breaks down toxic substances
chloroplast - ANSWER-site of photosynthesis and contains chlorophyll
nucleous - ANSWER-large membrane-enclosed structure that contains the cell's DNA,
coordinates the cell's activities, which include growth, intermediary metabolism, protein
synthesis, and reproduction
ribosomes - ANSWER-site of protein synthesis
mitochondrion - ANSWER-converts the chemical energy stored in food into compounds
that are more convenient for the cell to use
cytoskeleton - ANSWER-network of protein filaments within some cells that helps the
cell maintain its shape and is involved in many forms of cell movement
cell membrane - ANSWER-cell structure that controls which substances can enter or
leave the cell
rough ER - ANSWER-portion of the endoplasmic reticulum covered with ribosomes that
make membrane proteins and secretory proteins
endoplasmic reticulum - ANSWER-cell structure that forms a maze of passageways in
which proteins and other materials are carried from one part of the cell to another
flagellum - ANSWER-a long, whiplike structure that helps a cell to move
centrosome - ANSWER-structure in animal cells containing centrioles from which the
spindle fibers develop.
CORRECT ANSWERS
matter - ANSWER-anything that occupies space
atom - ANSWER-smallest unit of matter that retains elemental properties
element - ANSWER-type of atom that has certain characteristics
atomic mass - ANSWER-protons + neutrons
chemical bonds - ANSWER-interactions between atoms
protons - ANSWER-positively charged particles
neutrons - ANSWER-the particles of the nucleus that have no charge
electrons - ANSWER-negatively charged particles
covalent bonds - ANSWER-sharing of electrons
ionic bonds - ANSWER-transfer of electrons
proteins - ANSWER-chains of amino acids, enzymes that make chemical reactions
occur
nucleic acids - ANSWER-DNA and RNA
organic compound - ANSWER-contains at least one carbon-hydrogen bond
inorganic compound - ANSWER-does not contain carbon-hydrogen bond
polar covalent bonds - ANSWER-unequal e- sharing
prokaryotic cell - ANSWER-small, less complex, single celled organisms, bacteria
eukaryotic cell - ANSWER-large, more complex, single or many cells, plants, fungus,
animals, protists
diffusion - ANSWER-natural process of particles spreading out (high concentration to
low concentration)
, osmosis - ANSWER-is diffusion of water across a semi-permeable membrane
isotonic - ANSWER-describes a solution whose solute concentration is equal to the
solute concentration inside a cell
hypertonic - ANSWER-having a higher concentration of solute than another solution
hypotonic - ANSWER-having a lower concentration of solute than another solution
passive transmembrane transport - ANSWER-does not require energy (high to low
concentration)
active transmembrane transport - ANSWER-requires energy (low concentration to high
concentration)
smooth ER - ANSWER-Makes lipids and breaks down toxic substances
chloroplast - ANSWER-site of photosynthesis and contains chlorophyll
nucleous - ANSWER-large membrane-enclosed structure that contains the cell's DNA,
coordinates the cell's activities, which include growth, intermediary metabolism, protein
synthesis, and reproduction
ribosomes - ANSWER-site of protein synthesis
mitochondrion - ANSWER-converts the chemical energy stored in food into compounds
that are more convenient for the cell to use
cytoskeleton - ANSWER-network of protein filaments within some cells that helps the
cell maintain its shape and is involved in many forms of cell movement
cell membrane - ANSWER-cell structure that controls which substances can enter or
leave the cell
rough ER - ANSWER-portion of the endoplasmic reticulum covered with ribosomes that
make membrane proteins and secretory proteins
endoplasmic reticulum - ANSWER-cell structure that forms a maze of passageways in
which proteins and other materials are carried from one part of the cell to another
flagellum - ANSWER-a long, whiplike structure that helps a cell to move
centrosome - ANSWER-structure in animal cells containing centrioles from which the
spindle fibers develop.
