MODULE 1 REVIEW QUIZ (16 QUESTIONS), BIOD 171,
PORTAGE LEARNING EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS
Microbiology is the study of what?
My answer: Microbiology is the study of microorganisms and their biological processes
at what is called the "micro" or "microscopic" level.
Answer Key: Microbiology is the study of microbes (microorganisms and viruses) and
their biological processes.
What is the smallest biological unit of life?
the cell
What is a macromolecule?
My answer: Macromolecules are large and complicated molecules that are made up of
smaller molecules. Examples of macromolecules are polysaccharides, lipids, nucleic
acids, and proteins.
More info:
- Proteins are made up of amino acids (of which there are 20 different types).
- Nucleic Acids can be either DNA or RNA. Nucleic acids are made up of nucleotides.
For DNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and thymine (T).
For RNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and uracil (U).
- Lipids are made up of hydrocarbons.
- Polysaccharides are made up of monosaccharides.
Answer Key: A macromolecule is classified as a complex molecule that is composed
from smaller subunits.
What are the four main types of macromolecules?
, My answer: polysaccharides, lipids, nucleic acids, proteins
Answer Key: Proteins, nucleic acids, lipids and polysaccharides
What various functions do proteins have in a cell?
My Answer:
Proteins have several functions in the cell;
1. To assist materials in moving in and out of the cell
2. To act as a catalyst enzyme which speeds up a biochemical process
3. To provide structure in the cell
4. To enable movement (e.g. filaments)
Answer Key: Proteins may facilitate the movement of materials in or out of a cell. Some
can act as enzymes that catalyze, or speed up, biochemical processes. Others play a
structural role while other proteins, such as filaments, enable movement.
What are the two major types of nucleic acids and their roles?
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?
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
PORTAGE LEARNING EXAM QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS
Microbiology is the study of what?
My answer: Microbiology is the study of microorganisms and their biological processes
at what is called the "micro" or "microscopic" level.
Answer Key: Microbiology is the study of microbes (microorganisms and viruses) and
their biological processes.
What is the smallest biological unit of life?
the cell
What is a macromolecule?
My answer: Macromolecules are large and complicated molecules that are made up of
smaller molecules. Examples of macromolecules are polysaccharides, lipids, nucleic
acids, and proteins.
More info:
- Proteins are made up of amino acids (of which there are 20 different types).
- Nucleic Acids can be either DNA or RNA. Nucleic acids are made up of nucleotides.
For DNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and thymine (T).
For RNA, the nucleotides are adenine (A), guanine (G), cytosine (C) and uracil (U).
- Lipids are made up of hydrocarbons.
- Polysaccharides are made up of monosaccharides.
Answer Key: A macromolecule is classified as a complex molecule that is composed
from smaller subunits.
What are the four main types of macromolecules?
, My answer: polysaccharides, lipids, nucleic acids, proteins
Answer Key: Proteins, nucleic acids, lipids and polysaccharides
What various functions do proteins have in a cell?
My Answer:
Proteins have several functions in the cell;
1. To assist materials in moving in and out of the cell
2. To act as a catalyst enzyme which speeds up a biochemical process
3. To provide structure in the cell
4. To enable movement (e.g. filaments)
Answer Key: Proteins may facilitate the movement of materials in or out of a cell. Some
can act as enzymes that catalyze, or speed up, biochemical processes. Others play a
structural role while other proteins, such as filaments, enable movement.
What are the two major types of nucleic acids and their roles?
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?
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
