BS 161 MSU questions with verified answers
Ans✓✓✓
_____ are the subunits of nucleic acids, and _____ are the subunits of proteins.
Ans✓✓✓ Nucleotides; amino acids
_____ is NOT a domain of life.
A. Bacteria
B. Archaea
C. Protists
D. Eukarya
E. Protists, Eukarya, Archaea, and Bacteria are all domains of life Ans✓✓✓
Protists
4 Main Classes of Biomolecules Ans✓✓✓ Proteins
Carbohydrates (sugars)
Nucleic Acids (RNA/DNA)
Lipids
A cell that is deficient in ribosomes is unable to complete what process?
Ans✓✓✓ Translation
A deoxyribose linked to a thymine is referred to as a:
A. purine nucleoside
B. nucleotide or purine nucleotide
,C. nucleoside
D. nucleotide
E. purine nucleotide Ans✓✓✓ Nucleoside
A pair of atoms joined by a polar covalent bond: Ans✓✓✓ has a slight positive
charge on one atom and a slight negative charge on the other
A pair of shared valence electrons is referred to as a: Ans✓✓✓ Covalent Bond
A polymerization reaction is made irreversible by: Ans✓✓✓ hydrolysis of a
phosphate group into 2 inorganic phosphates
A template strand of DNA is read in the ______ direction in order to direct
synthesis of RNA in the _____ direction Ans✓✓✓ 3'-5'; 5'-3'
A transcribed region of DNA has a 5' to 3' sequence TTCATGGCGAC. The 5' to 3'
sequence of an RNA transcribed from this DNA would be 5' _______________3'.
Ans✓✓✓ GUCGCCAUGAA
Amino Group Characteristic Ans✓✓✓ Polar
Act as a base (can receive H+)
Amino Group Example Ans✓✓✓ Glycine
Amino Group Symbol Ans✓✓✓ -NH2
A nitrogen atom bonded to 2 hydrogen
, An explanation supported by a large body of observations and experimentation is
referred to as a: Ans✓✓✓ theory
An intron is: Ans✓✓✓ An RNA sequence that is removed during the processing of
an RNA molecule that is in the nucleus
An organism's genome is analyzed and found to contain 18% thymine. What
percentage of that organism's DNA is cytosine. Ans✓✓✓ 32%
As part of their normal function, many proteins bind to DNA briefly and then
release it again. Which types of bonds might be involved in these transient
protein-DNA interactions? Ans✓✓✓ -van dr Waals forces
-hydrogen
-ionic
Binding sites for tRNA are located in: Ans✓✓✓ large ribosomal subunit
Carbohydrates and proteins are two types of macromolecules. Which functional
characteristic of proteins distinguishes them from carbohydrates?
A. Tendency to make cell membranes hydrophobic
B. Large amount of stored information
C. Ability to catalyze biochemical reactions
D. Efficient storage of usable chemical energy Ans✓✓✓ Ability to catalyze
biochemical reactions
Ans✓✓✓
_____ are the subunits of nucleic acids, and _____ are the subunits of proteins.
Ans✓✓✓ Nucleotides; amino acids
_____ is NOT a domain of life.
A. Bacteria
B. Archaea
C. Protists
D. Eukarya
E. Protists, Eukarya, Archaea, and Bacteria are all domains of life Ans✓✓✓
Protists
4 Main Classes of Biomolecules Ans✓✓✓ Proteins
Carbohydrates (sugars)
Nucleic Acids (RNA/DNA)
Lipids
A cell that is deficient in ribosomes is unable to complete what process?
Ans✓✓✓ Translation
A deoxyribose linked to a thymine is referred to as a:
A. purine nucleoside
B. nucleotide or purine nucleotide
,C. nucleoside
D. nucleotide
E. purine nucleotide Ans✓✓✓ Nucleoside
A pair of atoms joined by a polar covalent bond: Ans✓✓✓ has a slight positive
charge on one atom and a slight negative charge on the other
A pair of shared valence electrons is referred to as a: Ans✓✓✓ Covalent Bond
A polymerization reaction is made irreversible by: Ans✓✓✓ hydrolysis of a
phosphate group into 2 inorganic phosphates
A template strand of DNA is read in the ______ direction in order to direct
synthesis of RNA in the _____ direction Ans✓✓✓ 3'-5'; 5'-3'
A transcribed region of DNA has a 5' to 3' sequence TTCATGGCGAC. The 5' to 3'
sequence of an RNA transcribed from this DNA would be 5' _______________3'.
Ans✓✓✓ GUCGCCAUGAA
Amino Group Characteristic Ans✓✓✓ Polar
Act as a base (can receive H+)
Amino Group Example Ans✓✓✓ Glycine
Amino Group Symbol Ans✓✓✓ -NH2
A nitrogen atom bonded to 2 hydrogen
, An explanation supported by a large body of observations and experimentation is
referred to as a: Ans✓✓✓ theory
An intron is: Ans✓✓✓ An RNA sequence that is removed during the processing of
an RNA molecule that is in the nucleus
An organism's genome is analyzed and found to contain 18% thymine. What
percentage of that organism's DNA is cytosine. Ans✓✓✓ 32%
As part of their normal function, many proteins bind to DNA briefly and then
release it again. Which types of bonds might be involved in these transient
protein-DNA interactions? Ans✓✓✓ -van dr Waals forces
-hydrogen
-ionic
Binding sites for tRNA are located in: Ans✓✓✓ large ribosomal subunit
Carbohydrates and proteins are two types of macromolecules. Which functional
characteristic of proteins distinguishes them from carbohydrates?
A. Tendency to make cell membranes hydrophobic
B. Large amount of stored information
C. Ability to catalyze biochemical reactions
D. Efficient storage of usable chemical energy Ans✓✓✓ Ability to catalyze
biochemical reactions
