Pyrimidine - Study guides, Class notes & Summaries

A heritable change in DNA sequence (or RNA sequence in RNA viruses) a. anomaly b. mutation c. DNA damage d. pyrimidine dimer correct answersb. mutation As a result of mistakes made by the RNA dependent RNA polymerases, influenza viruses demonstrate: a. antigenic confusion b. antigenic shift c. antigenic drift d. lysis correct answersc. antigenic drift Newly formed influenza viruses would naturally clump together if _____________is inhibited by "Tamiflu": a. sialic aci...

MCAT Biology Central Dogma - correct answer DNA → RNA → Protein Purines - which bases? - how many rings? - correct answer Pyrimidines - which bases? - how many rings? - correct answer Remember: "Pyrimidine" has a "y" in it; so does "cytosine" and "thymine." Phosphodiester Bond - correct answer Joins one nucleotide to the next; between the 3rd C of one ribose and the 5th C of the other to create the sugar-phosphate backbone Directionality of DNA (convention) - correc...

PATHO Test 2 - UTMB EXAM WITH COMPLETE SOLUTIONS Primary Function of Respiratory system - gas exchange with oxygen from the air being tranferred to the blood and carbon dioxide genome all of the genetic info in an organisms DNA Chromosomes Where the basic genetic info is stored. 23 pairs or 46 chromosomes. Female = XX Male = XY DNA Molecule - double stranded helix - stored within nucleus - stores genetic information Nitrogenous bases Pyrimidine bases - Thymine -...

ETS Major Field Test In Biology UPDATED Questions and CORRECT Answers Photoreactivation repair (nucleotide excision repair) - CORRECT ANSWER- Pyrimidine dimers formed in DNA due to UV radiation can be repaired by? SOS repair Double strand break repair Mismatch repair Photoreactivation repair (nucleotide excision repair) Base excision repair

ASCP Technologist In Molecular Biology Board Exam Prep UPDATED Actual Exam Questions and CORRECT Answers Pyrimidine - CORRECT ANSWER- One carbon ring Cytosine, Thymine, Uracil Purine - CORRECT ANSWER- Two carbon rings Adenine, Guanine How are nucleotides joined together? - CORRECT ANSWER- Condensation to form phosphodiester bond

Thin layer chromatography can use silica plates which are very polar. Will polar or non polar substances have lower Rf values on this plate? ANS -Polar substances - they will have a higher affinity for the silica and thus will not travel as far as the non polar substances A titration of a strong acid with a strong base or vice versa has an equivalence point around what pH? ANS -7 What type of bond is usually disrupted during denaturation of proteins? ANS -H bond Is uracil a purine or...

Pyrimidine correct answersOne carbon ring Cytosine, Thymine, Uracil What is the function of mRNA? correct answersCarries genetic info out of nucleus Transcript translated to protein What is the function of tRNA? correct answersCarries aa to ribosome Anticodon pairs with codon on mRNA strand What is the function of rRNA? correct answerspart of ribosome structure most abundant RNA coordinated coupling of tRNA to mRNA codons Feedback inhibition correct answersProduct of pathway is ...

Thin layer chromatography can use silica plates which are very polar. Will polar or non polar substances have lower Rf values on this plate? ANS -Polar substances - they will have a higher affinity for the silica and thus will not travel as far as the non polar substances A titration of a strong acid with a strong base or vice versa has an equivalence point around what pH? ANS -7 What type of bond is usually disrupted during denaturation of proteins? ANS -H bond Is uracil a purine or...

Structure of DNA CORRECT ANSWER 5'-->3' Anti-parallel 1 ring=pyrimidine 2 ring=purine A(2) + T(1) 2 H-bonds G(2)+C(1) 3 H-bonds *G and C have 3* DNA Replication CORRECT ANSWER Semi-conservative DNA Pol replicates 1000nt/second *errors only 1/10billion bp Why does the origin (oriC) have runs of A:T base pairs? CORRECT ANSWER Easy to break apart, only 2 H-bonds

USMLE Step 1 First Aid - Biochemistry 2024 Study Guide(100% Verified) Side = base + (deoxy)ribose [sugar] Tide = base + (deoxy)ribose [sugar] *Which are the purines?* "pure as gold" = Adenosine, Guanosine *Which are the pyrimidines?* "CUT the pyramid" = Cytosine, Uracil, Thymine - answerWhat is a nucleoside? What is a nucleotide? Which are the purines? Which are the pyrimidines? *Disrupt pyrimidine synthesis* *Leflunomide: *inhibits dihydroorate dehydrogenase *Methotrexatem Tri...