WGU C190 Intro to Biology - Unit 3
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Features of DNA - CORRECT ANSWER - Function: Stores genetic information.
Location: Remains in the nucleus. Structure: Double helix. Sugar: Deoxyribose. Pyrimidines:
Cytosine, Thymine. Purines: Adenine, guanine.
Features of RNA - CORRECT ANSWER - Function: Involved in protein synthesis.
Location: Leaves the nucleus. Structure: Usually single-stranded. Sugar: Ribose. Pyrimidines:
Cytosine, uracil. Purines: Adenine, guanine.
Actin - CORRECT ANSWER - Filament in the Cytoskeleton which has a prominent role
in cell movement, maintaining cell shape, and connection to other cells, as well as intracellular
transport.
Cell Membrane - CORRECT ANSWER - provides a barrier between the interior and
exterior of the cell and it regulates the flow of substances in and out of the cell.
Cell wall - CORRECT ANSWER - Protective layer for prokaryotes, made of
peptidoglycan.
central vacuole - CORRECT ANSWER - In a plant cell. can be a place of storage,
degradation, defense, and even physical support for the cell.
centriole - CORRECT ANSWER - A barrel-shaped structure only present in animal cells.
plays a role in the spatial organization of the cell and cell division.
chloroplast - CORRECT ANSWER - In a plant cell. Chloroplasts capture energy from the
sun and use that energy to build sugar molecules.
, chromatin - CORRECT ANSWER - the material of which the chomrosomes of organisms
are composed. Consists of protein, RNA and DNA
chromosome - CORRECT ANSWER - A single molecule of DNA.
cilium - CORRECT ANSWER - a short, microscopic, hairlike vibrating structure. Occurs
in large numbers on the surface of certain cells.
cytoplasm - CORRECT ANSWER - the fluid that occupies the space inside the cell. the
space in which the chemical reactions that enable life take place.
cytoskeleton - CORRECT ANSWER - formed by a series of protein filaments, and is both
a scaffold for the cell structure and a framework for many cellular activities, including
movement and cell division.
endoplasmic reticulum (ER) - CORRECT ANSWER - a series of sacs and tubes. put
together or assemble the proteins and other cellular components.
eukaryotic cell - CORRECT ANSWER - larger, and most often they are multicellular
organisms, including plants, animals, and fungi.
flagellum - CORRECT ANSWER - External appendage to a prokaryote.
fungus - CORRECT ANSWER - include molds and mushrooms, are also eukaryotes.
golgi apparatus - CORRECT ANSWER - Where the proteins assembled in the ER are
delivered to different parts of the cell, or in multicellular organisms, to different parts of the
body.
lysosome - CORRECT ANSWER - specialized vesicles found only in animal cells.
Contain powerful digestive enzymes that can recycle cellular parts or destroy external invaders.
UPDATED ACTUAL Exam Questions and
CORRECT Answers
Features of DNA - CORRECT ANSWER - Function: Stores genetic information.
Location: Remains in the nucleus. Structure: Double helix. Sugar: Deoxyribose. Pyrimidines:
Cytosine, Thymine. Purines: Adenine, guanine.
Features of RNA - CORRECT ANSWER - Function: Involved in protein synthesis.
Location: Leaves the nucleus. Structure: Usually single-stranded. Sugar: Ribose. Pyrimidines:
Cytosine, uracil. Purines: Adenine, guanine.
Actin - CORRECT ANSWER - Filament in the Cytoskeleton which has a prominent role
in cell movement, maintaining cell shape, and connection to other cells, as well as intracellular
transport.
Cell Membrane - CORRECT ANSWER - provides a barrier between the interior and
exterior of the cell and it regulates the flow of substances in and out of the cell.
Cell wall - CORRECT ANSWER - Protective layer for prokaryotes, made of
peptidoglycan.
central vacuole - CORRECT ANSWER - In a plant cell. can be a place of storage,
degradation, defense, and even physical support for the cell.
centriole - CORRECT ANSWER - A barrel-shaped structure only present in animal cells.
plays a role in the spatial organization of the cell and cell division.
chloroplast - CORRECT ANSWER - In a plant cell. Chloroplasts capture energy from the
sun and use that energy to build sugar molecules.
, chromatin - CORRECT ANSWER - the material of which the chomrosomes of organisms
are composed. Consists of protein, RNA and DNA
chromosome - CORRECT ANSWER - A single molecule of DNA.
cilium - CORRECT ANSWER - a short, microscopic, hairlike vibrating structure. Occurs
in large numbers on the surface of certain cells.
cytoplasm - CORRECT ANSWER - the fluid that occupies the space inside the cell. the
space in which the chemical reactions that enable life take place.
cytoskeleton - CORRECT ANSWER - formed by a series of protein filaments, and is both
a scaffold for the cell structure and a framework for many cellular activities, including
movement and cell division.
endoplasmic reticulum (ER) - CORRECT ANSWER - a series of sacs and tubes. put
together or assemble the proteins and other cellular components.
eukaryotic cell - CORRECT ANSWER - larger, and most often they are multicellular
organisms, including plants, animals, and fungi.
flagellum - CORRECT ANSWER - External appendage to a prokaryote.
fungus - CORRECT ANSWER - include molds and mushrooms, are also eukaryotes.
golgi apparatus - CORRECT ANSWER - Where the proteins assembled in the ER are
delivered to different parts of the cell, or in multicellular organisms, to different parts of the
body.
lysosome - CORRECT ANSWER - specialized vesicles found only in animal cells.
Contain powerful digestive enzymes that can recycle cellular parts or destroy external invaders.
