Test 2 Quizzes (4,5,6,7,8) Flashcards
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What enzyme from HIV can make a copy of DNA from RNA?
Reverse Transcriptase
What enzyme is used for release of bacteriophages from the host cell?
lysozyme
What two biomolecules do all viruses possess?
1) Nucleic Acid
2) Protein
What is alternative splicing?
It is when you remove introns and rejoin exons in various combinations to create different mRNAs
If 30 colonies were counted on a plate with a final dilution factor of 10-3 mL, then the original sample should contain how many bacteria?
30,000 bacterium
or
3 x 10^4
What is the difference between a nucleoside and a nucleotide?
A nucleotide contains a sugar, nitrogenous base, and a phosphate group, whereas a nucleoside only contains a sugar and nitrogenous base
What is the difference between a sense codon and a nonsense codon?
A sense codon codes amino acids while a nonsense codons are termination codons.
What are the two functions of beta-galactosidase?
1) converts lactose allolactose
2) converts lactose to glucose and galactose