Exam 1 Flashcards
Alkaptonuria is a disorder in which the body cannot process phenylalanine and tyrosine, this is caused by a mutation in HGD gene for what enzyme?
Homogenisate 1,2-dioxygenase
What is responsible for the strong negative charge of nucleic acids?
The phosphate group
As the parental double helix divides into two double helix DNA with one parental strand in each of the double helices, what is this known as?
Semiconservative replication of DNA
What DNA is very long and has multiple origins of replication?
Eukaryotic DNA
Helix destabilizing proteins, keeps the two DNA strands separate and protects the DNA from Nucleases that cleave single stranded DNA, what is another name for Helix destabilizing proteins…
Single stranded DNA binding proteins (SSB)
Pictures of kids…
The fat kid is the answer, something to do with Prader-willi syndrome or something
DNA polymerase III has what type of polymerase activity?
5’ –> 3’
What type of activity is used to excise mismatched nucleotides during proofreading of newly synthesized DNA?
3’ –> 5’ exonuclease activity
DNA Polymerase I uses what nuclease activity for RNA primers (replacing RNA with DNA), it synthesizes the new DNA and then proofreads the new chain using what exonuclease activity?
5’ –> 3’
3’ –> 5’
What is a multisubunit enzyme used during eukaryotic DNA replication to initiate strand synthesis on the leading strand and beginning of okazaki fragments of the lagging strand?
Pol Alpha
What does not require a primer and has no known endonucleases or exonuclease activity, therefore has no ability to repair mismatch…
RNA polymerase
What does require a primer and has endonucleases and exonuclease activity?
DNA polymerase
What is an enzyme that produces the small RNA’s including tRNAs and small ribosomal RNA?
RNA Polymerase III
When genetic code is redundant where some amino acids have more than one triplet coding for it?
Degeneracy
Huntington disease…
Autosomal Dominant
Galactosemia…
Autosomal Recessive