Portage Learning Microbiology BIOD 171 module 1 Questions and Answers
True/False. A virus is considered a mi-
False
croorganism.
True or False: The smallest biological
False
unit of life is the molecule.
Macromolecules
At a generalized level, all cells are com- A student may also answer: Proteins,
prised of what? Lipids, Nucleic acids and Polysaccha-
rides but they must answer with all four
to be fully correct.
Proteins are formed from various com-
1. Amino acids
binations of of which there are
2. 20
known forms.
How many amino acids are classified as
9
being essential amino acids?
The plasma membrane (select all that
are true):
A. Restricts movement of materials in
and out of the cell
B. Is often a triple layer comprised of
A;C
lipids
C. Prevents essential nutrients from es-
caping
D. Contains hydrophobic tails pointing
outward
Complete the following DNA strand, and 3' GGTCATCG 5'
indicate how many bonds are formed for 5' CCAGTAGC 3'
each complementary pair:
3' GGTCATCG 5' There are 2 bonds formed between A
5' CC AGC 3' and T, and 3 bonds between G and C.
True of False: The genetic material within
a prokaryotic cell is contained within a False
membrane-enclosed region.
How many carbon atoms are present in
6
the monosaccharide glucose?
1/4
True/False. A virus is considered a mi-
False
croorganism.
True or False: The smallest biological
False
unit of life is the molecule.
Macromolecules
At a generalized level, all cells are com- A student may also answer: Proteins,
prised of what? Lipids, Nucleic acids and Polysaccha-
rides but they must answer with all four
to be fully correct.
Proteins are formed from various com-
1. Amino acids
binations of of which there are
2. 20
known forms.
How many amino acids are classified as
9
being essential amino acids?
The plasma membrane (select all that
are true):
A. Restricts movement of materials in
and out of the cell
B. Is often a triple layer comprised of
A;C
lipids
C. Prevents essential nutrients from es-
caping
D. Contains hydrophobic tails pointing
outward
Complete the following DNA strand, and 3' GGTCATCG 5'
indicate how many bonds are formed for 5' CCAGTAGC 3'
each complementary pair:
3' GGTCATCG 5' There are 2 bonds formed between A
5' CC AGC 3' and T, and 3 bonds between G and C.
True of False: The genetic material within
a prokaryotic cell is contained within a False
membrane-enclosed region.
How many carbon atoms are present in
6
the monosaccharide glucose?
1/4
