Pyrimidine Study guides, Class notes & Summaries

PEBC Part I sample questions and answers already passed 1 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. b 3 β-Carotene is the precursor of: a. r...

This is the whole class notes for metabolic biochemistry. Some of the concepts it contains are: Glycolysis, Citric Acid Cycle/Kreb's cycle, Oxidative phosphorylation, Electron transport chain, Ketone bodies, Lipolysis, lipid synthesis, purine & pyrimidine synthesis & more.

Both are purines - ANSWER Which is true regarding adenine and guanine? Adenine is a purine and guanine is a pyrimidine Both are pyrimidines Adenine is a pyrimidine and guanine is a purine Both are purines Metabolism - ANSWER The combination of all reactions (catabolic + anabolic) within a cell is termed______ Enzymes - ANSWER ___ is a biological catalyst catalyst - ANSWER An enzyme acts as a ____ that alters the rate of a reaction without being changed by the reaction. activation...

Cohesion, surface tension, and adhesion are the properties of water molecules that a) increase when temperature increases b) results of ionic bonding c) results of hydrogen bonding d) results of polar covalent bonding Answer C : hydrogen bonding Starch, cellulose, and glycogen are long chains of a)amino acids b) glucose c) fatty acids d) nucleotides Answer B : glucose A nucleotide is made of a) a sugar and a purine or pyrimidine b) a nitrogenous base and a sugar c) a nitro...

1 Folic acid has tetrahydrofolate coenzyme activity which is based on the: a. pyrimidine ring. b. purine ring. c. pyrazine ring. d. pteridine ring. e. pyridine ring. d 2 Enkephalins are peptides that: a. have narcotic antagonist activity. b. exert actions resembling those of opioids. c. are found only in the central nervous system. d. cause blood vessel wall relaxation. e. transmit pain impulses. b 3 β-Carotene is the precursor of: a. retinol. b. thiamine. c. calcif...

This nucleotide is not incorporated into the structure of the DNA helix. a. Guanine b. Cytosine c. pyrimidine d. Thymine e. Uracil -e. Uracil

NBME - NEW TESTS (POSSIBLE 2024 QUESTIONS AND ANSWERS)-A 2 year old girl who is exposed to the sun has progressive development of dryness of the skin, excessive freckling, and keratoses. Skin fibroblasts cultured from this child are most likely to be defective in which of the following? - Nuclear excision repair of pyrimidine dimers a 65 year old man has a radical prostacetomy and lymph node dissection for adenocarcinoma of the prostate. which of the following features is involved in the gr...

Trinucleotide Repeat Expansion correct answer: Mutation that results in expansion of the number of trinucleotide repeats Trinucleotide Repeat (TNR) correct answer: Sequence of three nucleotides repeated several times in tandem Chromosomal Alteration correct answer: Mutation that involves >100 bp Spontaneous Mutation correct answer: A mutation that arises in the absence of a mutagenic agent. Unavoidable, happens in the natural process Hydrolysis correct answer: The process of...

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...

What is the difference between a nucleoside and nucleotide? A nucleotide consist of a sugar, nitrogenous base and phosphate group. A Nucleoside has a sugar and nitrogenous base only. A nucleoside is formed from the covalent bonding of a base, purine or pyrimidine, to either ribose or 2-deoxyribose. Nucleotides are built from a nitrogen-containing organic base, a monosaccharide, and phosphate. Ques 0 / 0 pts tion 2 Your Answer: What characteristic makes purines and pyrimidine heterocycli...