What’s up with cell biology? Hello and welcome to another wonderful quiz on the scientific study of biology, where we’ve been focusing our full attention on cells, what is contained within them and how they operate. Think you know all there is to know about cells? Find out in this quiz!
The DNA with the greater number of repetitive sequences will melt more slowly (lower T.)
DNA with high GC content must have a lower T
All DNA strands of equal length have equal T
DNA with a low AT content would melt more slowly
DNA polymerase III
DNA polymerase (alpha)
DNA polymerase I
DNA polymerase II
The higher the amount of GC, the lower the Tm
The higher the amount of GC, the higher the Tm
GC rich sequences will haev a higher Tm because they have less hydrogen bonds
GC rich sequences will have a lower Tm because they have more hydrogen bonds
B and c
DNA ligase
SSBs
Helicase
DnaA, dnaB and Dna C proteins
Replicase
Helicase
DNase
Gyrase
Ionic; hydrogen
Covalent; hydrogen
Hydrogen, covalent
Covalent, ionic
None of the above
Beta prime
Alpha
Sigma
Beta
RNA polymerase IV
RNA polymerase III
RNA polymerase I
RNA polymerase II
The addition of a poly-T sequence at the 5' end of the gene and the addiction of a poly-U tail at the 3' end.
The addition of a 7-mG cap at the 5' end of the transcript and the addition of a poly-A sequence at the 3' end of the message.
The addition of a poly-A sequence at the 5' end and the addition of a 7-mG cap at the 3' end of the RNA transcript.
The excision of the introns and the addition of a 7-mG cap to the 3 end.
Protein that is clipped out postranslationally
RNA that is removed during RNA processing.
DNA that is removed during DNA processing
Transfer RNA that binds to the anticodon
Carbohydrate that serves as a signal for RNA trasnsport
UAA, UGA, and UAG are initiator codons, not termination codons.
Exons are spliced out of mRNA before translation.
These triplets cause frameshift mutations, but not termination.
More than one termination codon is needed to stop translation
Introns are removed from mRNA before translation
True
False
1; single strands of 15N DNA base-paired to single strands of 14N DNA
1; doublestrands of DNA, each strand made up of a mixture of 14N and 15N DNA.
Double strands of 14N DNA at the top and double strands of 14N DNA at the bottom.
2; double strands of 14N DNA at the top and strands of 15N DNA based-paired to strands of 14N DNA in the middle
2; strands of 15N DNA base-paired to strands of 14N DNA in the middle and double strands of 15N DNA at the bottom.
There is no particular reason; that is simply what has been observed.
The enzyme requires a free 3'-OH group
The enzyme requires a free 3'-PO4 group
The enzyme requires a free 5-PO4 group
They are formed int he leading strand
They add nucleotides to the elongating DNA
They are formed int he lagging strand
They are synthesized by primase
Double-stranded, parallel, (A+T)/(C+G)=variable, (A+G)/(C+T)=1.0
Double-stranded, antiparallel, (A+T)/(C+G)=variable, (A+G)/(C+T)=1.0
Single-stranded, antiparallel, (A+T)/(C+G)=1.0, (A+G)/(C+T)=1.0
Double-stranded, parallel, (A+T)/(C+G)=1.0, (A+G)/(C+T)=1.0
14%
30%
70%
35%
40%
Heat-killed cultures treated with RNase would transform the R cells.
Heat-killed cultures treated with protease would transform the R cells
Heat-killed cultures treated with DNase would transform the R cells
Heat killed-cultures treated with protease would not transform the R cells
RNA polymerase
Replicase
DNA polymerase
Reverse transcriptase
DNA is composed of a oxynucleoside inphosphate with a base attached to it.
DNA is composed of a sugar-phosphate backbone with bases projecting towards the inside of the back bone.
DNA is composed of a sugar-phosphate backbone with bases projecting towards the outside of the backbone.
DNA is composed of a sugar-phosphate backbone with bases projecting towards the outside of the backbone.
DNA is composed of a sugar-phosphate backbone made up of bases hyrdogen-bonded to each other.
Stop codon; initiation codon
Anticodon; codon
Intron; exon
Exon; intron
Initiation codon; stop codon
Elongation, termination, promoter binding, rho binding, transcription bubble
Promoter binding, elongation, termination, rho binding, transcription bubble
Rho binding, promoter binding, elongation, termination, transcription bubble
Promoter binding, transcription bubble, elongation, rho binding, termination
Transcription bubble, promoter binding, elongation, termination, rho binding
Composite DNA, lelomeres (?_ and heterochromatin
Dominant DNA, euchromatin and heterochromatin
Multiple gene family DNA, hemoglobin and 5. OS RNA
Moderately repetitive DNA, SINEs, LINEs, and VNTRs
Permissive DNA, centromeres and heterchromatin
Replication
Alternative splicing
Alternative editing
5' methylation
True
False