BIOL 1121 - Exam Prep || 100% Verified Solutions.
Which of the following proteins appear in some stages of the cell cycle and are degraded at other
stages?
a. kinases
b. cyclins
c. nucleotides
d. phosphatases
e. none of the above correct answers b. cyclins
the concentrations of cyclins fluctuate throughout the cell cycle
What is the sequence corresponding to the following electropherogram obtained by Sanger
sequencing (green: A; red:T; black: G; blue: C)?
a. CCGTTATGAAC
b. GGCTTATGAAG
c. CAACTATTGCC
d. GGCAATAGTTG
e. CCGTTATCAAC correct answers e. CCGTTATCAAC
The process of _______________ cuts introns from the primary transcript and the final
"processed" mRNA is produced.
a. RNA cleaving
b. RNA translocation
,c. RNA elongation
d. RNA splicing correct answers d. RNA splicing
Introns are removed from primary transcripts by cleavage at conserved sequences called splice
sites. These sites are found at the 5′ and 3′ ends of introns.
At which pH will the concentration of hydrogen ions be equal to the concentration of hydroxide
ions?
a. pH 1
b. pH 5
c. pH 7
d. pH 9
e. pH 14 correct answers c. pH 7
in a neutral solution the hydrogen ion (H+) and the hydroxyl ion (OH−) concentrations are equal,
and each is equal to 10−7. A pH of 7 is neutral.
G0 is:
a. part of interphase
b. the phase of the cell cycle where DNA replication occurs
c. the phase of the cell cycle where two identical daughter cells are created
d. a special "resting" phase in which cells are in a non cycling state
e. a special phase where the number of chromosomes in a parent cell is reduced by half such that
each daughter cell contains only one member of a pair of homologous chromosomes correct
answers d. a special "resting" phase in which cells are in a non cycling state
, resting phase is a period in the cell cycle in which cells exist in a quiescent state.
Which of the following can be described as 'a sequence that can be several thousand base pairs
upstream or downstream of a eukaryotic promoter and which increases gene expression as much
as 200-fold.'?
a. CAAT box
b. enhancer
c. insulator
d. TATA box correct answers b. enhancer
Segment of DNA that is upstream, downstream, perhaps thousands of nucleotides away, or on
another chromosome that influence the transcription of a specific gene
Many of the extracellular signal molecules that regulate inflammation are released locally at the
site of infection. What form of cell-to-cell signaling is being used?
a. endocrine
b. paracrine
c. neuronal
d. contact-dependent correct answers b. paracrine
The eicosanoids are rapidly broken down and therefore act locally in autocrine or paracrine
signaling pathways. They stimulate a variety of responses in their target cells, including blood
platelet aggregation, inflammation, and smooth-muscle contraction
Which of the following correctly matches an organelle with its function?
Which of the following proteins appear in some stages of the cell cycle and are degraded at other
stages?
a. kinases
b. cyclins
c. nucleotides
d. phosphatases
e. none of the above correct answers b. cyclins
the concentrations of cyclins fluctuate throughout the cell cycle
What is the sequence corresponding to the following electropherogram obtained by Sanger
sequencing (green: A; red:T; black: G; blue: C)?
a. CCGTTATGAAC
b. GGCTTATGAAG
c. CAACTATTGCC
d. GGCAATAGTTG
e. CCGTTATCAAC correct answers e. CCGTTATCAAC
The process of _______________ cuts introns from the primary transcript and the final
"processed" mRNA is produced.
a. RNA cleaving
b. RNA translocation
,c. RNA elongation
d. RNA splicing correct answers d. RNA splicing
Introns are removed from primary transcripts by cleavage at conserved sequences called splice
sites. These sites are found at the 5′ and 3′ ends of introns.
At which pH will the concentration of hydrogen ions be equal to the concentration of hydroxide
ions?
a. pH 1
b. pH 5
c. pH 7
d. pH 9
e. pH 14 correct answers c. pH 7
in a neutral solution the hydrogen ion (H+) and the hydroxyl ion (OH−) concentrations are equal,
and each is equal to 10−7. A pH of 7 is neutral.
G0 is:
a. part of interphase
b. the phase of the cell cycle where DNA replication occurs
c. the phase of the cell cycle where two identical daughter cells are created
d. a special "resting" phase in which cells are in a non cycling state
e. a special phase where the number of chromosomes in a parent cell is reduced by half such that
each daughter cell contains only one member of a pair of homologous chromosomes correct
answers d. a special "resting" phase in which cells are in a non cycling state
, resting phase is a period in the cell cycle in which cells exist in a quiescent state.
Which of the following can be described as 'a sequence that can be several thousand base pairs
upstream or downstream of a eukaryotic promoter and which increases gene expression as much
as 200-fold.'?
a. CAAT box
b. enhancer
c. insulator
d. TATA box correct answers b. enhancer
Segment of DNA that is upstream, downstream, perhaps thousands of nucleotides away, or on
another chromosome that influence the transcription of a specific gene
Many of the extracellular signal molecules that regulate inflammation are released locally at the
site of infection. What form of cell-to-cell signaling is being used?
a. endocrine
b. paracrine
c. neuronal
d. contact-dependent correct answers b. paracrine
The eicosanoids are rapidly broken down and therefore act locally in autocrine or paracrine
signaling pathways. They stimulate a variety of responses in their target cells, including blood
platelet aggregation, inflammation, and smooth-muscle contraction
Which of the following correctly matches an organelle with its function?
