PORTAGE LEARNING 2025 BIOD 171 ESSENTIAL
MICROBIOLOGY FINAL 100 EXAM QUESTIONS AND
ANSWERS UPDATED 2026 2027 VERIFIED ANSWERS
UPDATED 2026 2027 COURSE FINAL COMPLETE PRACTICE
QUESTIONS AND LATEST UPDATED STUDY GUIDE
GRADED A+ 100 PERCENT VERIFIED GUARANTEED
SUCCESS
What are the two major types of nucleic acids and their roles? - CORRECT
ANSWER -
My Answer: The two major types of nucleic acids and their roles are as
follows;
1. DNA: Deoxyribonucleic acid
DNA is located in the nucleus of the cell. DNA's role in the cell is to store
hereditary information.
2. RNA: Ribonucleic acid
RNA is located in nucleus as well, but can also travel outside of the nucleus
into other parts of the cell.
Answer Key: There are two major types of nucleic acids: DNA
(deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are
chemical molecules that carry genetic information within the cell. DNA
contains a vast amount of hereditary information and is responsible for the
inheritable characteristics of living organisms. RNA is responsible for
deciphering the hereditary information in DNA and using it to synthesize
proteins.
What is the plasma membrane, and what is it made up of? - CORRECT
ANSWER -My answer: The plasma membrane, as the outer portion of the
cell, serves to contain and protect the cell's cytoplasmic space from
, outside elements. It's semipermeable which means it has the ability to
allow only certain substances to pass through.
The plasma membrane is a lipid bilayer made up of phospholipids. One
layer has its hydrophilic heads pointed to the outside of the cell, with
hydrophobic tails inside the cell membrane. The second later has its
hydrophilic heads pointed to the inside of the cell, with the hydrophobic
tails inside the cell membrane as well. Essentially, the hydrophobic tails are
pointed toward each other (touching neither the outside nor inside of the
cell) with the outer hydrophilic heads pointing outside the cell and the inner
hydrophilic heads pointing inside the cell.
Answer Key: The plasma membrane serves the cell as a surrounding barrier
that separates the inside of the cell from the outside surrounding
environment. The plasma membrane also restricts the movement of
materials (water, nutrients, etc) either in or out of the cell, thus allowing a
cells to absorb and keep what is needed (influx) while also preventing the
escape (out flux) of essential nutrients. The plasma membrane is
composed of lipids (hydrophobic hydrocarbons).
What are the three main components of polysaccharides? - CORRECT
ANSWER -My
Answer: Polysaccharides are made up of monosaccharides. The three main
components are carbon, hydrogen, and oxygen in varying amounts of each
one.
Answer Key:
Polysaccharides are composed of carbon, hydrogen and oxygen atoms.
Examples would include, C6H12O6 (glucose) C12H22O11 (sucrose) and
C6H10O5 (cellulose).
What is the primary difference between prokaryotic and eukaryotic cells? -
CORRECT ANSWER -My answer: There are a lot of differences between
MICROBIOLOGY FINAL 100 EXAM QUESTIONS AND
ANSWERS UPDATED 2026 2027 VERIFIED ANSWERS
UPDATED 2026 2027 COURSE FINAL COMPLETE PRACTICE
QUESTIONS AND LATEST UPDATED STUDY GUIDE
GRADED A+ 100 PERCENT VERIFIED GUARANTEED
SUCCESS
What are the two major types of nucleic acids and their roles? - CORRECT
ANSWER -
My Answer: The two major types of nucleic acids and their roles are as
follows;
1. DNA: Deoxyribonucleic acid
DNA is located in the nucleus of the cell. DNA's role in the cell is to store
hereditary information.
2. RNA: Ribonucleic acid
RNA is located in nucleus as well, but can also travel outside of the nucleus
into other parts of the cell.
Answer Key: There are two major types of nucleic acids: DNA
(deoxyribonucleic acid) and RNA (ribonucleic acid). Nucleic acids are
chemical molecules that carry genetic information within the cell. DNA
contains a vast amount of hereditary information and is responsible for the
inheritable characteristics of living organisms. RNA is responsible for
deciphering the hereditary information in DNA and using it to synthesize
proteins.
What is the plasma membrane, and what is it made up of? - CORRECT
ANSWER -My answer: The plasma membrane, as the outer portion of the
cell, serves to contain and protect the cell's cytoplasmic space from
, outside elements. It's semipermeable which means it has the ability to
allow only certain substances to pass through.
The plasma membrane is a lipid bilayer made up of phospholipids. One
layer has its hydrophilic heads pointed to the outside of the cell, with
hydrophobic tails inside the cell membrane. The second later has its
hydrophilic heads pointed to the inside of the cell, with the hydrophobic
tails inside the cell membrane as well. Essentially, the hydrophobic tails are
pointed toward each other (touching neither the outside nor inside of the
cell) with the outer hydrophilic heads pointing outside the cell and the inner
hydrophilic heads pointing inside the cell.
Answer Key: The plasma membrane serves the cell as a surrounding barrier
that separates the inside of the cell from the outside surrounding
environment. The plasma membrane also restricts the movement of
materials (water, nutrients, etc) either in or out of the cell, thus allowing a
cells to absorb and keep what is needed (influx) while also preventing the
escape (out flux) of essential nutrients. The plasma membrane is
composed of lipids (hydrophobic hydrocarbons).
What are the three main components of polysaccharides? - CORRECT
ANSWER -My
Answer: Polysaccharides are made up of monosaccharides. The three main
components are carbon, hydrogen, and oxygen in varying amounts of each
one.
Answer Key:
Polysaccharides are composed of carbon, hydrogen and oxygen atoms.
Examples would include, C6H12O6 (glucose) C12H22O11 (sucrose) and
C6H10O5 (cellulose).
What is the primary difference between prokaryotic and eukaryotic cells? -
CORRECT ANSWER -My answer: There are a lot of differences between
