BIOD 171 Final Exam 150
Correct Questions and
Answers- Portage Learning
For 2024 Exams
True/False. A virus is considered a microorganism. - ANSWER>>>False
(Viruses are not living and as such are not considered microorganisms.
Viruses can, however, be classified as microbes, a more general term that
includes microorganisms and viruses.)
What is the smallest biological unit of life? - ANSWER>>>A cell
What are the four main types of macromolecules found in cells? -
ANSWER>>>Proteins, Lipids, Nucleic Acids, Carbohydrates
How many different types of amino acids are available from which to make
proteins? - ANSWER>>>20
Define an essential amino acid. - ANSWER>>>An essential amino acid
cannot be produced by the human body and as such must be take in from
the environment through alternative sources (i.e) food.
What are the two major types of nucleic acids and their roles? -
ANSWER>>>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.
,Complete the following DNA strand, and indicate how many bonds are
formed for each complementary pair:
3' GGTCATCG 5'
5' CC______AGC 3' - ANSWER>>>3' GGTCATCG 5'
5' CCAGTAGC 3'
There are 2 bonds formed between A and T, and 3 bonds between G and
C.
The plasma membrane (select all that are true):
A. Only restricts movement of materials into the cell
B. Is often a bilayer comprised of lipids
C. Cannot prevent essential nutrients from escaping
D. Contains hydrophobic tails pointing inward - ANSWER>>>B. Is often a
bilayer comprised of lipids
D. Contains hydrophobic tails pointing inward
Carbon, hydrogen, and oxygen atoms come together to form what primary
macromolecule? Give an example. - ANSWER>>>Carbohydrates.
Any sugar is acceptable: Glucose, sucrose, fructose, galactose, lactose,
maltose, etc. Also options: Starch, glycogen, cellulose, or chitin
True or False: Eukaryotic cells do not have a nucleus. - ANSWER>>>False
(Eukaryotic cells do have a nucleus (prokaryotic cells do not)).
True or False: Prokaryotic cells can be subdivided into Bacteria and
Archaea. - ANSWER>>>True
True or False: Archaea, a eukaryotic class of microorganisms, is capable of
surviving harsh environments. - ANSWER>>>False
(Archaea are prokaryotic bacteria capable of surviving harsh
environments).
, Which of the following microorganisms are considered to be Eukarya?
Select all that apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista - ANSWER>>>All of the above
(Animalia, plantae, fungi, and protista)
Microorganisms classified as _________ obtain most of their energy by
converting light energy into chemical energy. - ANSWER>>>Plantae
A defining characteristic of fungi is the presence of chitin in the cell walls.
Which of following also contain chitin? Select all that apply.
A. Mushrooms
B. Bacteria
C. Yeast
D. Molds - ANSWER>>>Mushrooms, yeast, and molds
True or False: A defining characteristic of Protista is the inability of colonies
to form tissue layers. - ANSWER>>>True
The function of the lysosome is (select all that apply):
A. Lipid synthesis
B. Protein synthesis
C. To produce energy (ATP)
D. Protein modification and distribution
E. Waste disposal via hydrolytic enzymes - ANSWER>>>Waste disposal
via hydrolytic enzymes
(Lysosomes are membrane-enclosed organelles capable of degrading
unwanted cellular debris).
Identify the following cellular components by matching the number with the
description. - ANSWER>>>1. Nucleus
2. Lysosome
3. Plasma membrane
Correct Questions and
Answers- Portage Learning
For 2024 Exams
True/False. A virus is considered a microorganism. - ANSWER>>>False
(Viruses are not living and as such are not considered microorganisms.
Viruses can, however, be classified as microbes, a more general term that
includes microorganisms and viruses.)
What is the smallest biological unit of life? - ANSWER>>>A cell
What are the four main types of macromolecules found in cells? -
ANSWER>>>Proteins, Lipids, Nucleic Acids, Carbohydrates
How many different types of amino acids are available from which to make
proteins? - ANSWER>>>20
Define an essential amino acid. - ANSWER>>>An essential amino acid
cannot be produced by the human body and as such must be take in from
the environment through alternative sources (i.e) food.
What are the two major types of nucleic acids and their roles? -
ANSWER>>>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.
,Complete the following DNA strand, and indicate how many bonds are
formed for each complementary pair:
3' GGTCATCG 5'
5' CC______AGC 3' - ANSWER>>>3' GGTCATCG 5'
5' CCAGTAGC 3'
There are 2 bonds formed between A and T, and 3 bonds between G and
C.
The plasma membrane (select all that are true):
A. Only restricts movement of materials into the cell
B. Is often a bilayer comprised of lipids
C. Cannot prevent essential nutrients from escaping
D. Contains hydrophobic tails pointing inward - ANSWER>>>B. Is often a
bilayer comprised of lipids
D. Contains hydrophobic tails pointing inward
Carbon, hydrogen, and oxygen atoms come together to form what primary
macromolecule? Give an example. - ANSWER>>>Carbohydrates.
Any sugar is acceptable: Glucose, sucrose, fructose, galactose, lactose,
maltose, etc. Also options: Starch, glycogen, cellulose, or chitin
True or False: Eukaryotic cells do not have a nucleus. - ANSWER>>>False
(Eukaryotic cells do have a nucleus (prokaryotic cells do not)).
True or False: Prokaryotic cells can be subdivided into Bacteria and
Archaea. - ANSWER>>>True
True or False: Archaea, a eukaryotic class of microorganisms, is capable of
surviving harsh environments. - ANSWER>>>False
(Archaea are prokaryotic bacteria capable of surviving harsh
environments).
, Which of the following microorganisms are considered to be Eukarya?
Select all that apply.
A. Animalia
B. Plantae
C. Fungi
D. Protista - ANSWER>>>All of the above
(Animalia, plantae, fungi, and protista)
Microorganisms classified as _________ obtain most of their energy by
converting light energy into chemical energy. - ANSWER>>>Plantae
A defining characteristic of fungi is the presence of chitin in the cell walls.
Which of following also contain chitin? Select all that apply.
A. Mushrooms
B. Bacteria
C. Yeast
D. Molds - ANSWER>>>Mushrooms, yeast, and molds
True or False: A defining characteristic of Protista is the inability of colonies
to form tissue layers. - ANSWER>>>True
The function of the lysosome is (select all that apply):
A. Lipid synthesis
B. Protein synthesis
C. To produce energy (ATP)
D. Protein modification and distribution
E. Waste disposal via hydrolytic enzymes - ANSWER>>>Waste disposal
via hydrolytic enzymes
(Lysosomes are membrane-enclosed organelles capable of degrading
unwanted cellular debris).
Identify the following cellular components by matching the number with the
description. - ANSWER>>>1. Nucleus
2. Lysosome
3. Plasma membrane
