MGRADES UPDATED EXAMS
BIOL1001 TEST 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
what is the primary role of DNA in living organisms? - CORRECT ANSWER - to store
and transmit hereditary information
what type of reaction links nucleotides into a polynucleotide - CORRECT ANSWER -
dehydration reaction
what is the role of tRNA during protein synthesis - CORRECT ANSWER - carry amino
acids to the ribosome
according to base pairing rules, which base pairs with guanine in DNA - CORRECT
ANSWER - cytosine
what are the three components of a nucleotide - CORRECT ANSWER - nitrogenous base,
5 carbon sugar, phosphate group
what direction are new polynucleotide chains synthesized - CORRECT ANSWER - 5' to 3'
in the RNA sequence 5'-AUGCUAACG-3' which of the bases are classified as pyrimidines -
CORRECT ANSWER - Uracil and Cytosine
what type of bond links the sugars of two nucleotides in a polynucleotide - CORRECT
ANSWER - phosphodiester bond
what is true about tRNA - CORRECT ANSWER - has a precise 3D shape due to
intrastrand base pairing
,MGRADES UPDATED EXAMS
what feature of dna allows the generation of two identical copies during cell division -
CORRECT ANSWER - double helix structure where one strand contains the info to make
the complementary strand
what's the term for the arrangement of the two sugar-phosphate backbones in a DNA double
helix - CORRECT ANSWER - antiparallel
where does mRNA synthesis occur in a eukaryotic cell - CORRECT ANSWER - in the
nucleus
which nitrogenous base is found only in RNA and not in DNA - CORRECT ANSWER -
uracil
what is the repeating pattern of molecules in the backbone of a polynucleotide - CORRECT
ANSWER - sugar-phosphate
during gene expression, what is the role of mRNA - CORRECT ANSWER - to convey
genetic instructions from DNA to the ribosome
what is usually the final product of gene expression - CORRECT ANSWER - protein
in the RNA sequence 5'-AUGCUAACG-3', which of the bases are classified as purines? -
CORRECT ANSWER - adenine and guanine
in RNA, which base pairs with adenine - CORRECT ANSWER - uracil
what is the structural difference between DNA and RNA - CORRECT ANSWER - DNA
is usually double stranded, RNA is usually single stranded
which process is directly controlled by DNA through an RNA intermediate - CORRECT
ANSWER - protein synthesis
, MGRADES UPDATED EXAMS
what is the term for the entire process by which DNA directs the synthesis of proteins -
CORRECT ANSWER - gene expression
in a DNA double helix, which base pairs with adenine - CORRECT ANSWER - thymine
in RNA, which base pairs with guanine - CORRECT ANSWER - cytosine
in the famous Hershy and Chase blender experiment, radioactive sulphur was used to label
______ and radioactive phosphorus was used to level _____. the experiment results
demonstrated that the genetic material of a bacteriophage is _______. - CORRECT
ANSWER - protein, DNA, DNA
the two strands that form a DNA double helix are joined to each other through ______ -
CORRECT ANSWER - hydrogen bonds between complementary nucleotide bases
working with streptococcus bacteria, Griffith showed that dead pathogenic bacteria cells could
______ living bacteria cells that were ______ into ______ - CORRECT ANSWER -
transform, nonpathogenic, pathogenic
what was the conclusion of Griffith's experiment regarding the nature of the transforming
substance - CORRECT ANSWER - it was an unknown heritable substance
why were proteins initially considered better candidates for genetic material than DNA -
CORRECT ANSWER - proteins were easier to study in the lab
by interpreting experimental data gathered by other scientists, who built the double helix model
and contributed to the understanding of the antiparallel nature of the DNA strands - CORRECT
ANSWER - James Watson, francis crick, and rosalind franklin
BIOL1001 TEST 2 UPDATED ACTUAL
Exam Questions and CORRECT Answers
what is the primary role of DNA in living organisms? - CORRECT ANSWER - to store
and transmit hereditary information
what type of reaction links nucleotides into a polynucleotide - CORRECT ANSWER -
dehydration reaction
what is the role of tRNA during protein synthesis - CORRECT ANSWER - carry amino
acids to the ribosome
according to base pairing rules, which base pairs with guanine in DNA - CORRECT
ANSWER - cytosine
what are the three components of a nucleotide - CORRECT ANSWER - nitrogenous base,
5 carbon sugar, phosphate group
what direction are new polynucleotide chains synthesized - CORRECT ANSWER - 5' to 3'
in the RNA sequence 5'-AUGCUAACG-3' which of the bases are classified as pyrimidines -
CORRECT ANSWER - Uracil and Cytosine
what type of bond links the sugars of two nucleotides in a polynucleotide - CORRECT
ANSWER - phosphodiester bond
what is true about tRNA - CORRECT ANSWER - has a precise 3D shape due to
intrastrand base pairing
,MGRADES UPDATED EXAMS
what feature of dna allows the generation of two identical copies during cell division -
CORRECT ANSWER - double helix structure where one strand contains the info to make
the complementary strand
what's the term for the arrangement of the two sugar-phosphate backbones in a DNA double
helix - CORRECT ANSWER - antiparallel
where does mRNA synthesis occur in a eukaryotic cell - CORRECT ANSWER - in the
nucleus
which nitrogenous base is found only in RNA and not in DNA - CORRECT ANSWER -
uracil
what is the repeating pattern of molecules in the backbone of a polynucleotide - CORRECT
ANSWER - sugar-phosphate
during gene expression, what is the role of mRNA - CORRECT ANSWER - to convey
genetic instructions from DNA to the ribosome
what is usually the final product of gene expression - CORRECT ANSWER - protein
in the RNA sequence 5'-AUGCUAACG-3', which of the bases are classified as purines? -
CORRECT ANSWER - adenine and guanine
in RNA, which base pairs with adenine - CORRECT ANSWER - uracil
what is the structural difference between DNA and RNA - CORRECT ANSWER - DNA
is usually double stranded, RNA is usually single stranded
which process is directly controlled by DNA through an RNA intermediate - CORRECT
ANSWER - protein synthesis
, MGRADES UPDATED EXAMS
what is the term for the entire process by which DNA directs the synthesis of proteins -
CORRECT ANSWER - gene expression
in a DNA double helix, which base pairs with adenine - CORRECT ANSWER - thymine
in RNA, which base pairs with guanine - CORRECT ANSWER - cytosine
in the famous Hershy and Chase blender experiment, radioactive sulphur was used to label
______ and radioactive phosphorus was used to level _____. the experiment results
demonstrated that the genetic material of a bacteriophage is _______. - CORRECT
ANSWER - protein, DNA, DNA
the two strands that form a DNA double helix are joined to each other through ______ -
CORRECT ANSWER - hydrogen bonds between complementary nucleotide bases
working with streptococcus bacteria, Griffith showed that dead pathogenic bacteria cells could
______ living bacteria cells that were ______ into ______ - CORRECT ANSWER -
transform, nonpathogenic, pathogenic
what was the conclusion of Griffith's experiment regarding the nature of the transforming
substance - CORRECT ANSWER - it was an unknown heritable substance
why were proteins initially considered better candidates for genetic material than DNA -
CORRECT ANSWER - proteins were easier to study in the lab
by interpreting experimental data gathered by other scientists, who built the double helix model
and contributed to the understanding of the antiparallel nature of the DNA strands - CORRECT
ANSWER - James Watson, francis crick, and rosalind franklin
