Exonucleases Study guides, Class notes & Summaries

In E. coli, 5S rRNA is cleaved out of the pre-rRNA operon by: a. RNase III b. RNase E Correct Answer-RNase E The 5' cap: a. Does not play a role in translation b. Interacts with the poly A tail during transport out of the nucleus c. Protects the mRNA from 5' exonucleases d. Is acetylated e. Is sometimes found on E. coli mRNA Correct Answer-Protects the mRNA from 5' exonucleases The addition of the poly A tail: a. Occurs during the elongation phase of transcription b. Occurs during...

ASCP Technologist in Molecular Biology board exam prep with complete solution 2023/2024 Pyrimidine One carbon ring Cytosine, Thymine, Uracil Purine Two carbon rings Adenine, Guanine How are nucleotides joined together? Condensation to form phosphodiester bond What is the function of mRNA? Carries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? Carries aa to ribosome Anticodon pairs with codon on mRNA strand What is the function of rRNA?...

Nucleic Acid grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide double stranded DNA most energetically favorable state for DNA Purines double-ring structure Adenine (A) + Guanine (G) Pyrimidine single-ring structure Uracil (U)+ Cytosine Messenger RNA (mRNA) -template for all protein synthesis -encode all information necessary to produce proteins Heterogeneous nuclear RNA primary product o...

ASCP Molecular Biology Certification Exam 2024 Pyrimidine - Answer ️️ -One carbon ring Cytosine, Thymine, Uracil Purine - Answer ️️ -Two carbon rings Adenine, Guanine How are nucleotides joined together? - Answer ️️ -Condensation to form phosphodiester bond What is the function of mRNA? - Answer ️️ -Carries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? - Answer ️️ -Carries aa to ribosome Anticodon pairs with codon on mRNA ...

ASCP Technologist in Molecular Biology board exam prep with complete solution 2023/2024 Pyrimidine One carbon ring Cytosine, Thymine, Uracil Purine Two carbon rings Adenine, Guanine How are nucleotides joined together? Condensation to form phosphodiester bond What is the function of mRNA? Carries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? Carries aa to ribosome Anticodon pairs with codon on mRNA strand What is the function of rRNA?...

Nucleic Acid grows by attachment of 5' phosphate group of the incoming nucleotide to the 3'hydroxyl group of the last nucleotide double stranded DNA most energetically favorable state for DNA Purines double-ring structure Adenine (A) + Guanine (G) Pyrimidine single-ring structure Uracil (U)+ Cytosine Messenger RNA (mRNA) -template for all protein synthesis -encode all information necessary to produce proteins Heterogeneous nuclear RNA primary product o...

MCB EXAM 1 QUESTIONS & ANSWERS 2023/2024 How large is our genome? - ANSWER-3200 million bp How many base pairs does the genome contain? - ANSWER-3 × 10^9 base pairs. How long is the genome when fully extended? - ANSWER-20,000 phone books long What is Chromatin? - ANSWER-the fibrous complex of eukaryotic DNA and histone proteins. Which are the main Histones? - ANSWER-H1, H2A, H2B, H3, and H4. What's the charge (polarity) of Histones? - ANSWER-Positive What amino acid resi...

The polarity of doubled-stranded DNA arises from A. negative charges on the backbone phosphates B. the presence of 5' phosphates on one end and 3' hydroxyls on the other C. base pairing D. the sequence of bases, which is strand-specific - Answer- B A missense mutation is one in which A.the altered codon codes for the same amino acid. B.the altered codon codes for a different amino acid. C.the mutant protein is shorter than normal. D.insertion or deletion results in a shift in t...

Pyrimidine - One carbon ring Cytosine, Thymine, Uracil Purine - Two carbon rings Adenine, Guanine How are nucleotides joined together? - Condensation to form phosphodiester bond What is the function of mRNA? - Carries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? - Carries aa to ribosome Anticodon pairs with codon on mRNA strand What is the function of rRNA? - part of ribosome structure most abundant RNA coordinated coupling of tRNA to mRNA...

DNA replication is a. conservative b. semiconservative c. bidirectional d. liberal e. proliferative - ️️B DNA polymerase can synthesise DNA a. de novo by catalysing the polymerisation of free dNTPs b. by adding dNTPs to complementary dNTPs on a single stranded DNA c. by adding dNTPs to a hydroxyl group on the end of a growing polynucleotide chain hydrogen bonded to a strands of RNA d. by adding dNTPs to a hydroxyl group on the end of a growing polynucleotide chain hydrogen bonded...