Filters
Question type

Study Flashcards

Many genes generate different products depending on the type of the cell expressing the gene. How is this phenomenon accomplished?

Correct Answer

verifed

verified

Mechanisms to regulate gene expression d...

View Answer

All of the following gene products are coded for by constitutive genes except ______.


A) Histone
B) Aconitase
C) Pyruvate dehydrogenase
D) Lactose
E) rRNA

F) C) and E)
G) B) and D)

Correct Answer

verifed

verified

The tangling of DNA strands during replication is prevented by _________.


A) Topoisomerases
B) Helicases
C) Ligases
D) Primases
E) Unwindases

F) All of the above
G) C) and D)

Correct Answer

verifed

verified

______ is a protooncogene that codes for platelet-derived growth factor.


A) Sis
B) Src
C) Jun
D) Myc
E) None of the above is correct

F) C) and D)
G) D) and E)

Correct Answer

verifed

verified

All of the following play a role in DNA repair except ________.


A) Light
B) PR enzyme
C) Ribozymes
D) Endonuclease
E) Pol I

F) A) and E)
G) B) and C)

Correct Answer

verifed

verified

The initiation of transcription involves the binding of RNA polymerase to a specific sequence called a __________.


A) Delta repeat
B) Consensus sequence
C) Promoter
D) Primer
E) Long terminal repeat

F) A) and D)
G) C) and D)

Correct Answer

verifed

verified

Genomic libraries are produced by


A) Colony hybridization techniques
B) Polymerase chain reactions
C) Electroporation
D) Shotgun cloning
E) Cosmids

F) C) and D)
G) B) and D)

Correct Answer

verifed

verified

In nucleotide excision repair


A) Single bases are removed and replaced
B) Bulky lesions are removed
C) Thymine dimers are replaced
D) Gaps are repaired by DNA polymerase
E) Nucleotides are removed and new ones inserted

F) C) and D)
G) B) and E)

Correct Answer

verifed

verified

Mutations are caused by all of the following except ________.


A) Depurinations
B) Radiation
C) Viruses
D) Oxidative Damage
E) None of the above are correct

F) None of the above
G) B) and C)

Correct Answer

verifed

verified

Light-induced repair will correct which of the following mutations


A) Deamination of adenine
B) Reversion of thymine dimers
C) Tautomerism of uracil
D) Removal of nucleotides
E) Breaks in the phosphodiester linkage

F) A) and C)
G) D) and E)

Correct Answer

verifed

verified

Describe the advantages for organisms to arrange genes in operons.

Correct Answer

verifed

verified

In relatively simple genomes, such as th...

View Answer

In higher eukaryotes replication begins with the


A) Origin of replication complex (ORC)
B) Assembly of pre-initiation replication complex (preRC)
C) Recruiting of the MCM complex to the replication site
D) Stabilizing of the DNA strands by replication protein A (RPA)
E) Attachment of DNA polymerase to each DNA strand

F) B) and E)
G) A) and D)

Correct Answer

verifed

verified

The rate of DNA synthesis in eukaryotes is approximately_________ nucleotides per ________ per replication fork.


A) 10/ second
B) 50 / second
C) 100 / second
D) 50 / minute
E) 100/ minute

F) B) and D)
G) A) and D)

Correct Answer

verifed

verified

Many promoters for RNA polymerase II contain a consensus sequence call the _______.


A) CAAT box
B) GC box
C) Pribnow box
D) TATA box
E) Okazaki box

F) A) and B)
G) B) and E)

Correct Answer

verifed

verified

The average natural mutation rate for plants and animals is one mutation per ______ Genes/generation.


A) 10,000
B) 50,000
C) 100,000
D) 1,000,000

E) A) and C)
F) A) and B)

Correct Answer

verifed

verified

Explain the significance of "jumping genes."

Correct Answer

verifed

verified

"Jumping genes" is the popular...

View Answer

RNA molecules are more reactive than DNA molecules explain.

Correct Answer

verifed

verified

RNA molecules are more reactive than DNA...

View Answer

______ is a protooncogene that codes for a GTP-binding protein.


A) Sis
B) Src
C) Jun
D) Myc
E) None of the above is correct

F) A) and B)
G) B) and C)

Correct Answer

verifed

verified

Place the following steps of general recombination in chronological order i. DNA ligase seals the cut ends ii. A second series of DNA strand cuts occurs opposite the first crossover strands iii. Two homologous DNA molecules become paired iv. DNA polymerase fills any gaps and DNA ligase seals the cut strands v. Two of the DNA strands are cleaved vi. The two strand segments cross over


A) i, iii, v, iv, ii, vi
B) iii, iv, vi, i, vi, iii
C) iv, ii, v, i, ii, iv
D) iii, v, vi, i, ii, iv
E) v, vi, i, ii, iv, iii

F) D) and E)
G) C) and D)

Correct Answer

verifed

verified

What is a cosmid?

Correct Answer

verifed

verified

A cosmid is a cloning vehicle ...

View Answer

Showing 21 - 40 of 74

Related Exams

Show Answer