Natural Science CLEP UPDATED ACTUAL
Questions and CORRECT Answers
cell - CORRECT ANSWER - smallest unit of most living things
organism - CORRECT ANSWER - living thing
prokaryotes - CORRECT ANSWER - cells that lack a membrane-bound nucleus and
membrane-bound organelles
organelles - CORRECT ANSWER - small structures in the cytoplasm of a cell that do
special jobs
eukoryotic cells - CORRECT ANSWER - has a nucleus, has organelles or other cell parts
virus - CORRECT ANSWER - particle made up of DNA, RNA, protein, and in some cases
lipids that can only replicate only by infecting living cells
electron microscope - CORRECT ANSWER - used to examine tiny cell organelles
cell membrane - CORRECT ANSWER - composed of a bilayer of lipids embedded with
globular proteins
endocytic vesicles - CORRECT ANSWER - Formed when cell membrane surrounds a
molecule outside the cell and ingests it
microvilli - CORRECT ANSWER - projections on cell membrane increase surface area
, cytoskeleton - CORRECT ANSWER - provides structural support to a cell composed of
microtubules, microfilaments, centrioles
microtubules - CORRECT ANSWER - hollow tubes of protein about 25 nanometers in
diameter, support the cell and moves organelles within the cell
microfilaments - CORRECT ANSWER - double-stranded chains of proteins which give
structure to the cell
centrioles - CORRECT ANSWER - tubes, One of two tiny structures located in the
cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
ribosomes - CORRECT ANSWER - site of protein synthesis. Free ribosomes - float
unattached; attached ribosomes - attached to the ER
endoplasmic reticulum - CORRECT ANSWER - an internal membrane system in which
components of cell membrane and some proteins are constructed. rough - instrumental in protein
synthesis; smooth - processes lipids fats and steroids
golgi apparatus - CORRECT ANSWER - stores, packages and ships proteins
secretory vesicles - CORRECT ANSWER - packaged protein or other substance produced
by golgi apparatus/endoplasmic reticulum
exocytosis - CORRECT ANSWER - process by which a cell releases large amounts of
material
lysosomes - CORRECT ANSWER - cell organelle filled with enyzmes need to break down
certain materials in the cells
Questions and CORRECT Answers
cell - CORRECT ANSWER - smallest unit of most living things
organism - CORRECT ANSWER - living thing
prokaryotes - CORRECT ANSWER - cells that lack a membrane-bound nucleus and
membrane-bound organelles
organelles - CORRECT ANSWER - small structures in the cytoplasm of a cell that do
special jobs
eukoryotic cells - CORRECT ANSWER - has a nucleus, has organelles or other cell parts
virus - CORRECT ANSWER - particle made up of DNA, RNA, protein, and in some cases
lipids that can only replicate only by infecting living cells
electron microscope - CORRECT ANSWER - used to examine tiny cell organelles
cell membrane - CORRECT ANSWER - composed of a bilayer of lipids embedded with
globular proteins
endocytic vesicles - CORRECT ANSWER - Formed when cell membrane surrounds a
molecule outside the cell and ingests it
microvilli - CORRECT ANSWER - projections on cell membrane increase surface area
, cytoskeleton - CORRECT ANSWER - provides structural support to a cell composed of
microtubules, microfilaments, centrioles
microtubules - CORRECT ANSWER - hollow tubes of protein about 25 nanometers in
diameter, support the cell and moves organelles within the cell
microfilaments - CORRECT ANSWER - double-stranded chains of proteins which give
structure to the cell
centrioles - CORRECT ANSWER - tubes, One of two tiny structures located in the
cytoplasm of animal cells near the nuclear envelope; play a role in cell division.
ribosomes - CORRECT ANSWER - site of protein synthesis. Free ribosomes - float
unattached; attached ribosomes - attached to the ER
endoplasmic reticulum - CORRECT ANSWER - an internal membrane system in which
components of cell membrane and some proteins are constructed. rough - instrumental in protein
synthesis; smooth - processes lipids fats and steroids
golgi apparatus - CORRECT ANSWER - stores, packages and ships proteins
secretory vesicles - CORRECT ANSWER - packaged protein or other substance produced
by golgi apparatus/endoplasmic reticulum
exocytosis - CORRECT ANSWER - process by which a cell releases large amounts of
material
lysosomes - CORRECT ANSWER - cell organelle filled with enyzmes need to break down
certain materials in the cells
