BIO 340 Exam 1
Questions with
Complete Solutions
Graded A+
Denning Muriithi [Date] [Course title]
, BIO 340 Exam 1
1. In Griffith's experiments, what made the harmless R cells grow
capsules when exposed to heat-killed S cells? Correct Ans: DNA
2. In the Hershey-Chase experiment radioactive Sulfur was used to Correct
Ans: Correct Ans: Be incor- porated into the phage protein coat because
some amino acids contain sulfur
3. The experiments by Hershey and Chase helped confirm that DNA was
the hereditary material on the basis of the finding that Correct Ans:
Radioactive phosphorus was found inside the cell
4. If DNA of a particular species was analyzed and it was found that it
contains 27 percent of adenine (A), what would be the percentage of
cytosine (C)? Correct Ans: 23%
5. Four nucleic acid samples are analyzed to determine the percentages of
the nucleotides they contain. Which of the following DNA sample(s) could be
dou- ble-stranded DNA? Sample 1 Correct Ans: A(22%), G(28%), T(22%),
U(0%), C(28%); Sample 2 Correct Ans: A(30%), G(30%), T(0%), U(20%), C(20%);
Sample 3 Correct Ans: A(18%), G(32%), T(0%), U(18%), C(32%); Sample 4
Correct Ans: A(29%), G(29%), T(21%), U(0%), C(21%) Correct Ans: Sample 1
6. Your chromosomes are located
and they are made of
. Correct Ans: inside the nucleus, DNA
7. A nucleotide is made of . Correct Ans: sugar + phosphate +
nitrogen base
8. A molecule of RNA (ribonucleic acid) contains the bases . Correct
Ans: adenine, guanine, cytosine, and uracil
9. Which of the following does cytosine pair with? Correct Ans: Guanine
10. Prokaryotes contain a chromosome,
and eukaryotes contain
chromosomes. Correct Ans: double-stranded circular; double
stranded linear
11.How long would the peptide be that is translated from this mRNA
se- quence Correct Ans: 5'- AUGGGCUACCGA -3'? Correct Ans: 4
amino acids
12. What is the correct sequence of steps in the central dogma? Correct Ans
-
DNA->RNA->Protein
13.Where does transcription take place in human/eukaryotic cells? Correct
Ans: Nucleus
14.Where does translation take place in eukaryotic cells? Correct Ans:
Cytoplasm
2/8
, BIO 340 Exam 1
15.Transcribe the following DNA sequence (non template strand) Correct
Ans: 5'-ATGGC- CGGTTATTAAGCA-3' Correct Ans: 5'-
AUGGCCGGUUAUUAAGCA-3'
16.In which of the following pairs do both evolutionary processes
introduce new genetic variation into a population? Correct Ans: Mutation
and gene flow
17.Mutation can be defined as the addition of genetic variation that
increases the hereditary diversity of a population. T/F Correct Ans: True
18.If an allele has a frequency of 1 Correct Ans: Correct Ans: It is found in
100% of the population
19.When male lions reach sexual maturity, they leave their group in search
of a new pride. This can alter the allele frequencies of the population
through which of the following mechanisms? Correct Ans: Gene flow
3/8
Questions with
Complete Solutions
Graded A+
Denning Muriithi [Date] [Course title]
, BIO 340 Exam 1
1. In Griffith's experiments, what made the harmless R cells grow
capsules when exposed to heat-killed S cells? Correct Ans: DNA
2. In the Hershey-Chase experiment radioactive Sulfur was used to Correct
Ans: Correct Ans: Be incor- porated into the phage protein coat because
some amino acids contain sulfur
3. The experiments by Hershey and Chase helped confirm that DNA was
the hereditary material on the basis of the finding that Correct Ans:
Radioactive phosphorus was found inside the cell
4. If DNA of a particular species was analyzed and it was found that it
contains 27 percent of adenine (A), what would be the percentage of
cytosine (C)? Correct Ans: 23%
5. Four nucleic acid samples are analyzed to determine the percentages of
the nucleotides they contain. Which of the following DNA sample(s) could be
dou- ble-stranded DNA? Sample 1 Correct Ans: A(22%), G(28%), T(22%),
U(0%), C(28%); Sample 2 Correct Ans: A(30%), G(30%), T(0%), U(20%), C(20%);
Sample 3 Correct Ans: A(18%), G(32%), T(0%), U(18%), C(32%); Sample 4
Correct Ans: A(29%), G(29%), T(21%), U(0%), C(21%) Correct Ans: Sample 1
6. Your chromosomes are located
and they are made of
. Correct Ans: inside the nucleus, DNA
7. A nucleotide is made of . Correct Ans: sugar + phosphate +
nitrogen base
8. A molecule of RNA (ribonucleic acid) contains the bases . Correct
Ans: adenine, guanine, cytosine, and uracil
9. Which of the following does cytosine pair with? Correct Ans: Guanine
10. Prokaryotes contain a chromosome,
and eukaryotes contain
chromosomes. Correct Ans: double-stranded circular; double
stranded linear
11.How long would the peptide be that is translated from this mRNA
se- quence Correct Ans: 5'- AUGGGCUACCGA -3'? Correct Ans: 4
amino acids
12. What is the correct sequence of steps in the central dogma? Correct Ans
-
DNA->RNA->Protein
13.Where does transcription take place in human/eukaryotic cells? Correct
Ans: Nucleus
14.Where does translation take place in eukaryotic cells? Correct Ans:
Cytoplasm
2/8
, BIO 340 Exam 1
15.Transcribe the following DNA sequence (non template strand) Correct
Ans: 5'-ATGGC- CGGTTATTAAGCA-3' Correct Ans: 5'-
AUGGCCGGUUAUUAAGCA-3'
16.In which of the following pairs do both evolutionary processes
introduce new genetic variation into a population? Correct Ans: Mutation
and gene flow
17.Mutation can be defined as the addition of genetic variation that
increases the hereditary diversity of a population. T/F Correct Ans: True
18.If an allele has a frequency of 1 Correct Ans: Correct Ans: It is found in
100% of the population
19.When male lions reach sexual maturity, they leave their group in search
of a new pride. This can alter the allele frequencies of the population
through which of the following mechanisms? Correct Ans: Gene flow
3/8
