Purine or pyrimidine Study guides, Class notes & Summaries

PRELIMS LEC Exam Questions and Answers 2024 b. Ribose, deoxyribose - Answer-The sugar component in RNA is______, while ______in DNA. a. Ribose, bases b. Ribose, deoxyribose c. Deoxyribose, ribose d. Phosphate, ribose c. Both covalently and hydrogen bonded to a sugar - Answer-Nucleoside is a pyrimidine or purine base a. Ionically bonded to a sugar b. Hydrogen bonded to a sugar c. Both covalently and hydrogen bonded to a sugar d. Covalently bonded to a sugar b. Connect the sugar to th...

USMLE- BIOCHEMISTRY- EXAM 3 REVIEW | WITH 100% CORRECT ANSWERS | LATEST UPDATE | GRADED A+ 1 Q Which of the following statements about Purine and Pyrimidine biosynthesis and metabolism is correct (or True)? (Select all that apply) A: Antifolate drugs and Glutamine analogs block purine nucleotide biosynthesis. B: PRPP (phosphoribosylpyrophosphate) synthase phosphorylates the anomeric OH group of Ribose 5’-phosphate. C: cAMP and cGMP feedback regulate their formation from IMP (Ino...

Macromolecules: Carbohydrate, Lipid, Nucleic Acid, Protein, Enzyme Carbohydrate: Sugars and starches which body breaks down to glucose ● Structural function: cellulose and chitin ● Energy storage: amylose, amylopectin, glycogen ● Recognition molecules: glycoproteins and glycolipids Lipids: Fatty acids and their derivatives that are soluble in water ● H and C and main components ● Fats ● Hydrophobic- thus help separate aqueous compartments ● Store energy (fats, oils, adip...

PMC exam 5 questions & answers 2024/2025 Nucleoside/Nucleotide Reverse Transcriptase Inhibitors (NRTIs) - ANSWERSHas two active (catalytic) sites: The RNase H (RNA-cleaving) active site and the DNA polymerase (DNA-synthesizing) active site. Both activities are needed to reverse-transcribe HIV's RNA-based genomic material into DNA. either purine or pyrimidine derivatives of natural DNA monomers. bind to the DNA polymerase catalytic site of the reverse transcriptase enzyme. As a result...

Bio 107 Exam 1 Questions with Correct Answers Graded A+ What does a nucleotide structure have? Nitrogenous base Sugar Phosphate group What do nucleotides form when they are chemically connected together? DNA strand What are the two nitrogenous bases? Pyrimidine and Purine What is included in the pyrimidine group? Cytosine (C) Thymine (T) Uracil (U) What is included in the purine group? Adenine (A) Guanine (G) Which of the following is only included in the DNA group C, T, U, A, or G?...

Are the R groups non polar, polar, or it depends on the type of amino acid? depends How many amino acids are there? How many are essential? How many are nonessential? 20 total. 10 essential. 10 nonessential. What basic elements are usually found in all carbohydrate examples? Carbon, hydrogen, oxygen Fructose and Glucose are very similar but what is the difference? Fructose has 5 rings Glucose has 6 rings Which molecule or elements are missing from maltose versus ...

USLME – Biochemistry Exam Questions With Accurate Answers. Amino acids necessary for purine synthesis - answerGlycine Aspartate Glutamine Leflunomide MOA - answerinhibits dihydroorotate dehydrogenase 5-fluorouracil and capecitabine (its prodrug) MOA - answerForm 5-F-dUMP which inhibits thymidylate synthase (therefore decreasing dTMP) Adenosine deaminase deficiency (Pathogenesis, presentation) - answerADA needed for degradation of adenosine Deficiency causes: excess ATP and dATP --&gt...

Molecular Diagnostics EXAM GRADED A+ nucleoside vs nucleotide - ANSWERnucleoside: base + sugar (A,G,C,T) - sine/dine nucletide: base + sugar + phosphate(s) (AMP,GMP,etc) -ylate components required for synthesis of pyrimidine - ANSWERN1, C4, C5, C6: aspartate C2: CO2 N3: glutamine does not require much energy components required for synthesis of purine - ANSWER3NH3's: 2 glutamine, 1 fumarate N¹⁰ formyl-THF, CO2 glycine requires 7 or 8 ATP's degredation of pyrimidines - ANSWER*...

MMSC 491 EXAM 1 /WELL STRUCTURED QUESTIONS AND CORRECT ANSWERS 2024/2025 GRADED A+. 2 / 6 1. Epigenetic: Changes in phenotypeHeritable Not due to changes in DNA sequence DNA methylation or histone modification 2. Collective term for all different DNA molecules within a cell or organism: - Genome 3. DNA protein complex: Chromosome 4. How many DNA molecules does a male have? female have?: Male 25Female 24 5. Single ring based on carbon and nitrogen atoms C,T: Pyrimidine 6. Double rin...

Helix Practice Test Questions & Answers 2024/2025 Avery's experiments would show that - ANSWERSall genes were composed of DNA Luria's experiments largely dealt with the - ANSWERSmultiplication of bacterial viruses After first talking to Crick, he and Watson decided DNA could be solved - ANSWERSin a simple way in the alpha helix, a single polypeptide chain folds into a - ANSWERShelical arrangement held together by hydrogen bonds between groups on the same chain Maurice told Fra...