Adenine and guanine - Study guides, Class notes & Summaries

Genomics Midterm Exam Questions With Complete Solutions. DNA is a polymer composed of all of the following EXCEPT: a. nitrogenous base b. 5-carbon sugar c. codon d. phosphate group c codon = 3 nucleotide sequence Which of the nitrogen-containing bases are purines? a. adenine b. cytosine c. thymine d. guanine a, d cytosine and thymine are pyrimidines In a DNA sequence, adenine nitrogen base pairs with _________, while guanine pairs with _________. a. uracil, thymine b. th...

The structure of a strand of DNA. - it is a double helix, like a twisted ladder. the ladder rings are nucleotide subunits and they have a covalent bond to the sugar phosphate backbone (made of deoxyribose and a phosphate group) What are the nucleotide subunits? - adenine, guanine, cytosine, and thymine How are the subunits held together? - through a hydrogen bond What are the nucleotide subunits compliments? - Adenine and thymine cytosine and guanine How does DNA replicate? - the parent s...

What are the 4 nitrogenous bases? Which pair together? Correct Answer-adenine (A), thymine (T), cytosine (C), guanine (G) A->T, C->G What are the issues with these combinations: 1.) Pyrimidine + Pyrimidine = 2.) Purine + Purine = 3.) Pyrimidine + Purine = Correct Answer-1.) width of DNA too narrow 2.) width of DNA too wide 3.) width of DNA consistent with X-ray model Which bases are purines and which are pyrimidines? Correct Answer-purines: A,G pyrimidines: T,C What are...

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...

BIOL 2300 Quizzes 1-7 Latest Update Graded A+ DNA is negatively charged because a. the ribose sugars of DNA are positively charged b. the ribose sugars of DNA are negatively charged c. the nitrogenous bases are negatively charged d. the phosphate backbone of DNA is negatively charged e. DNA is not acidic d. the phosphate backbone of DNA is negatively charged DNA replication is a. semi-conservative b. dispersive c. conservative d. error prone a. semi-conservative Define D...

What is DNA? Correct Answer-A linear, double-stranded structure composed of multiple units of four different nitrogenous bases, each attached to a sugar molecule Bases are nucleoprotiens created from proteins we eat. They can be single ring structures (pyrimidines) or double-ring structures (purines). What are the pyrimidines and what are purines? Correct Answer-Adenine and Guanine are purines. Thymine and cytosine are pyrimidines What is the purpose of a gene? Correct Answer-To code for t...

Chapter 1 Biochemistry and the Unity of Life Matching Questions Use the following to answer questions 1–10: Choose the correct answer from the list below. Not all of the answers will be used. a) uracil b) cytoplasm c) protein d) thymine e) carbohydrate f) sugar–phosphate units g) cell wall h) transcription i) glycogen j) lipid k) central dogma l) phagocytosis m) endoplasmic reticulum n) translation o) prokaryotes p) eukaryotes q) lysosome 1. DNA is made from the building...

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 -...

1 ---------- Exam Section 1: Item 2 of 50 National, Board of Medical Examiners Comprehensive Basic Science Self-Assessment 2. Free purine and pyrimidine bases are reutilized in normal metabolism. In children with Lesch-Nyhan syndrome who have intellectual disability, poor muscle coordination, and selfmutilation tendencies, there is a defect in the salvage of which of the following pairs of bases? A) Adenine and thymine B) Guanine and hypoxanthine C) Guanine and uric acid D) Uracil a...

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 -...