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UF MCB3020 EXAM 2 BACUSMO QUESTIONS AND ANSWERS
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UF MCB3020 EXAM 2 BACUSMO QUESTIONS AND ANSWERS
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Name: Score:199 Multiple choice questions
Term 1 of 199
What is an anticodon?
A region of the cell membrane responsible for protein synthesis
A type of enzyme involved in dna replication
A complement to the 3 base mRNA codon that is located on the tRNA
A sequence of amino acids in a protein
Term 2 of 199
Describe the following terms:
a.) Coding Strand:
DNA strand with the same sequence as the mRNA
Protein strand with the same sequence as the dna
Synthesize new dna along lagging strand
Coding strand: dna strand that is not involved in transcription
Term 3 of 199
A -_______________ agent is one the inhibits the growth of microorganisms; for example,
___________________ inhibits the growth of bacteria.
Active; Bacteriophage
Static; Bacteriostatic
Dynamic; Bactericidal
Stable; Bacteriolytic
,Term 4 of 199
What bond binds nucleotides?
Ionic bonds
Phosphodiester bonds
Hydrogen bonds
Rna polymerase
Term 5 of 199
What is a telomere?
Interlocking chromosomes that form during the termination stage of DNA replication
A complement to the 3 base mRNA codon that is located on the tRNA
Nucleotide sequences that repeat several hundreds of times at the end of the 3' end of
linear chromosomes. They act as a buffer that protects important genes from being
eroded.
A homologue of eukaryotic intermediate filaments
Term 6 of 199
True or False: Only a select few of our foods contain food spoilage microorganisms.
True
False
Term 7 of 199
Define the following types of recombination:
Homologous:
Entails transfer of identical sequences of Dna between two Dna molecules
Comprises sharing of complementary sequences of Dna between two Dna molecules
Involves exchange of homologous sequences of DNA between two DNA molecules
Includes swapping of non-homologous sequences of Dna between two Dna molecules
,Term 8 of 199
What is a codon?
a unit of energy measurement in cells
3 base codes for a specific amino acid
a type of rna involved in protein synthesis
a structure found in plant cells for photosynthesis
Term 9 of 199
d.) DNA polymerase Epsilon:
Removes primers during dna synthesis and replaces it with dna
Each daughter dna molecule contains one new strand and one old strand
Synthesizes new DNA along leading strand
Enzyme that catalyzes the synthesis of dna; also has an exonuclease proofreading
function
Term 10 of 199
What direction does polymerization occur in?
The time it takes the population to double
Occurs in a Circular pattern around the Protein core
Occurs from the N terminal to the C terminal
Occurs randomly within the protein structure
, Term 11 of 199
c.) Single-Stranded Binding Proteins:
Binds to mRNA sequences to carry specific Amino Acids to growing polypeptide chain
during translation
Bind to separated DNA strands and hold them apart while DNA synthesis occurs
The limited portion of DNA that is unwound as RNA polymerase synthesizes mRNA
Each daughter DNA molecule contains one new strand and one old strand
Term 12 of 199
What are the 3 mechanisms of horizontal gene transfer?
Conjugation: Involves the transfer of genetic material between bacteria through direct
cell-to-cell contact
Transformation: Involves uptake of naked DNA from environment
Transduction: Involves the transfer of genetic material that is mediated by a virus.
RNA polymerase 1: Catalyzes synthesis of rRNA
RNA polymerase 2: Catalyzes synthesis of mRNA
RNA polymerase 3: Catalyzes synthesis of tRNA
1. Minimum growth temperature: Lowest temperature at which an organism can grow and
survive
2. Maximum growth temperature: Highest temperature at which an organism can grow
and survive
3. Optimal growth temperature: Most suitable temperature for bacterial growth
Leading Strand: Strand on which DNA synthesis occurs continuously as the replication
fork expands.
Lagging Strand: Strand on which DNA synthesis proceeds in a discontinuous, "back and
fill" fashion. Produces pieces of DNA called OKAZAKI fragments.
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