A basic unit of DNA packaging in eukaryotes. DNA wound around histones.
What is a nucleosome?
100
The number of nucleotides needed to specify 5 amino acids
What is 15?
200
The principle enzyme involved in DNA replication
What is DNA polymerase
200
To which Carbon in Deoxyribose are nucleotides added to during DNA replication?
What is the 3' end
200
Every three nucleotides on an mRNA molecule that codes for a particular amino acid
What is a codon?
200
Which of the following is an example of post-transcriptional control of gene expression?
a. The addition of methyl groups to cytosine bases of DNA
b. the binding of transcription factors to a promoter
c. the removal of introns and the splicing together of exons d. the folding of DNA to form heterochromatin
What is c. the removal of introns and the splicing together of exons
200
The difference between missense and nonsense mutations.
What is Missense changes one amino acid to another. Nonsense causes translation to stop.
300
The inactive X in each cell of a female condenses into this compact object
What is a Barr Body?
300
The bonds between A and T or C and G
What are hydrogen bonds
300
The first three nitrogen bases that should "start" each mRNA strand
What is AUG?
300
BONUS BOX!!
What is Pick Again!!
300
Why are insertion and deletion called frameshift mutations?
What is they change the order of all of the codons afterwards.
400
In the eukaryotic cell, a protein that functions in initiating or regulating transcription.
What are transcription factors?
400
The scientist(s) who first concluded that no matter the organism, the amount of a=t and c=g
Who is Chargaff?
400
How is mRNA modified before it leaves the nucleus?
What is
1) Introns spliced out
2) Guanine cap added
3) Poly-A tail added
400
What would happen if the repressor of an inducible operon were mutated so that it could not bind to the operator?
a. irriversible binding of the prepressor to the promoter
b. reduced transcription of the operon's genes
c. buildup of a substrate for the pathway controlled by the operon
d. continuous transcription of the operon's genes.
What is d. continuous transcription of the operon's genes
400
FROM MEMORY: Name one codon that codes for stop.
What is UGA, UAG, or UAA
500
Short, newly synthesized DNA fragments that are formed on the lagging template strand during DNA replication
What is are Okazaki fragments?
500
If a DNA has 27 % of its bases as A, then what are the percentages of the rest of its bases?
What is 27 % T, 23% C, 23% G.
500
This enzyme links together Okazaki fragments of the lagging strand
What is DNA ligase
500
What is a a cluster of genes with related functions, along with the promoter and operator that control their transcription.
What is an operon?
500
Describe tRNA's role in protein synthesis
What is tRNA transfers amino acids to the ribosome. It's anticodon will bind to a complementary codon on the mRNA.