WGU C190 Intro to Biology Unit 3 Questions And Answers | Latest 2026
1. Features of DNA Function: Stores genetic information. Location: Remains in the nucleus. Structure:
Double helix. Sugar: Deoxyribose. Pyrimidines: Cytosine, Thymine. Purines: Ade-
nine, guanine.
2. Features of RNA Function: Involved in protein synthesis. Location: Leaves the nucleus. Structure:
Usually single-stranded. Sugar: Ribose. Pyrimidines: Cytosine, uracil. Purines: Ade-
nine, guanine.
3. Actin Filament in the Cytoskeleton which has a prominent role in cell movement, main-
taining cell shape, and connection to other cells, as well as intracellular transport.
4. Cell Membrane provides a barrier between the interior and exterior of the cell and it regulates the
flow of substances in and out of the cell.
5. Cell wall Protective layer for prokaryotes, made of peptidoglycan.
6. central vacuole In a plant cell. can be a place of storage, degradation, defense, and even physical
support for the cell.
7. centriole A barrel-shaped structure only present in animal cells. plays a role in the spatial
organization of the cell and cell division.
8. chloroplast In a plant cell. Chloroplasts capture energy from the sun and use that energy to
build sugar molecules.
9. chromatin the material of which the chomrosomes of organisms are composed. Consists of
protein, RNA and DNA
10. chromosome A single molecule of DNA.
11. cilium a short, microscopic, hairlike vibrating structure. Occurs in large numbers on the
surface of certain cells.
12. cytoplasm
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, WGU C190 Intro to Biology Unit 3 Questions And Answers | Latest 2026
the fluid that occupies the space inside the cell. the space in which the chemical
reactions that enable life take place.
13. cytoskeleton formed by a series of protein filaments, and is both a scattold for the cell structure
and a framework for many cellular activities, including movement and cell division.
14. endoplasmic a series of sacs and tubes. put together or assemble the proteins and other cellular
reticulum (ER) components.
15. eukaryotic cell larger, and most often they are multicellular organisms, including plants, animals,
and fungi.
16. flagellum External appendage to a prokaryote.
17. fungus include molds and mushrooms, are also eukaryotes.
18. golgi apparatus Where the proteins assembled in the ER are delivered to ditterent parts of the cell,
or in multicellular organisms, to ditterent parts of the body.
19. lysosome specialized vesicles found only in animal cells. Contain powerful digestive enzymes
that can recycle cellular parts or destroy external invaders.
20. microtubule Formed by centrioles. filament type of the cytoskeleton. also form appendages
such as the flagellum of the sperm cell and the cilia of the cells of the respiratory
system.
21. mitochondrion takes fuel in the form of sugar (glucose) and convert it to usable energy ATP.
22. nuclear envelope a double-layered membrane surrounding the nucleus. studded with pores that
allow information from inside the nucleus to enter the cytoplasm.
23. nucleoid Region ina prokaryote, where the DNA molecule is present. Does not have a
surrounding membrane.
24. nucleoulus
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1. Features of DNA Function: Stores genetic information. Location: Remains in the nucleus. Structure:
Double helix. Sugar: Deoxyribose. Pyrimidines: Cytosine, Thymine. Purines: Ade-
nine, guanine.
2. Features of RNA Function: Involved in protein synthesis. Location: Leaves the nucleus. Structure:
Usually single-stranded. Sugar: Ribose. Pyrimidines: Cytosine, uracil. Purines: Ade-
nine, guanine.
3. Actin Filament in the Cytoskeleton which has a prominent role in cell movement, main-
taining cell shape, and connection to other cells, as well as intracellular transport.
4. Cell Membrane provides a barrier between the interior and exterior of the cell and it regulates the
flow of substances in and out of the cell.
5. Cell wall Protective layer for prokaryotes, made of peptidoglycan.
6. central vacuole In a plant cell. can be a place of storage, degradation, defense, and even physical
support for the cell.
7. centriole A barrel-shaped structure only present in animal cells. plays a role in the spatial
organization of the cell and cell division.
8. chloroplast In a plant cell. Chloroplasts capture energy from the sun and use that energy to
build sugar molecules.
9. chromatin the material of which the chomrosomes of organisms are composed. Consists of
protein, RNA and DNA
10. chromosome A single molecule of DNA.
11. cilium a short, microscopic, hairlike vibrating structure. Occurs in large numbers on the
surface of certain cells.
12. cytoplasm
1/6
, WGU C190 Intro to Biology Unit 3 Questions And Answers | Latest 2026
the fluid that occupies the space inside the cell. the space in which the chemical
reactions that enable life take place.
13. cytoskeleton formed by a series of protein filaments, and is both a scattold for the cell structure
and a framework for many cellular activities, including movement and cell division.
14. endoplasmic a series of sacs and tubes. put together or assemble the proteins and other cellular
reticulum (ER) components.
15. eukaryotic cell larger, and most often they are multicellular organisms, including plants, animals,
and fungi.
16. flagellum External appendage to a prokaryote.
17. fungus include molds and mushrooms, are also eukaryotes.
18. golgi apparatus Where the proteins assembled in the ER are delivered to ditterent parts of the cell,
or in multicellular organisms, to ditterent parts of the body.
19. lysosome specialized vesicles found only in animal cells. Contain powerful digestive enzymes
that can recycle cellular parts or destroy external invaders.
20. microtubule Formed by centrioles. filament type of the cytoskeleton. also form appendages
such as the flagellum of the sperm cell and the cilia of the cells of the respiratory
system.
21. mitochondrion takes fuel in the form of sugar (glucose) and convert it to usable energy ATP.
22. nuclear envelope a double-layered membrane surrounding the nucleus. studded with pores that
allow information from inside the nucleus to enter the cytoplasm.
23. nucleoid Region ina prokaryote, where the DNA molecule is present. Does not have a
surrounding membrane.
24. nucleoulus
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