Pyrimidines - Study guides, Class notes & Summaries
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Biochem Module 6 (Portage Learning), CHEM 210 Biochemistry Questions and Answers 100% Graded A+ Updated 2024
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Biochem Module 6 (Portage Learning), CHEM 210 Biochemistry Questions and Answers 100% Graded A+ Updated 2024 
 
In DNA, adenine always pairs with ________. 
 
- Thymine 
- Guanine 
- Uracil 
- Cytosine - CORRECT ANSWER-- Thymine 
 
DNA is built from which of the following? 
 
- Nucleosides 
- Genes 
- Purines 
- Nucleotide 
- Codons - CORRECT ANSWER-- Nucleotide 
 
The double helix of DNA is stabilized mainly by __________. 
 
- Ionic bonds 
- Covalent bonds 
- Ion-dipole bonds 
- Hydroge...
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Pathophysiology Introductory Concepts and Clinical Perspectives 2nd Edition Capriotti Test Bank
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1. Which statement regarding the sodium-potassium pump is correct? 
1.	The cell’s plasma membrane is more soluble to sodium ions than potassium ions. 
2.	The concentration of sodium ions should be higher inside the cell compartment. 
3.	The concentration of potassium ions should be higher outside the cell compartment. 
4.	The active transport involves pumping out three sodium ions and pumping in two potassium ions. 
 		2. What is the process in which glucose is used to create energy? 
1.	Autol...
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CPPS 403 Pre-Midterm exam 2023 with 100% correct answers
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Central Dogma - correct answerDNA-(Transcription) - RNA- (Translation) -Protein 
 
DNA Structure - correct answer1. Deoxyribose: 5 Carbon atoms are numbered 1' to 5' . Hydrogen attached to 2'. Sugar 
2. Phosphate group 
Sugar-Phosphate backbone is asymmetric because PO4 groups connect the C5' of a sugar with the C3' of neighbouring sugar. = Asymmetric ends because the C5' end is attached to a PO4 and the C3' end is simply a hydroxyl group of the sugar. 
3. Nucleic Acid: No-covalently bon...
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USMLE STEP 1 BIOCHEMISTRY Questions and Answers with Complete Solutions 2024
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USMLE STEP 1 BIOCHEMISTRY 
Questions and Answers with 
Complete Solutions 2024 
histones are rich in which 2 AA's - ANSlysine & argenine 
Barr bodies (what, type of chromatin) - ANSinactive X chromosomes 
heterochromatin (highly condensed, sterically inaccessible) 
less condensed, transcriptionally active, sterically accessible chromatin - 
ANSeuchromatin 
DNA methylation at CpG islands - ANSrepresses transcription 
"CpG Methylation makes DNA Mute" 
DNA methylation (what is methylated and why...
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Lab 7 Microbial Genetics & Genetic Engineering BIO250L/ 2024 Updates. VERIFIED.
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Lab 7 Microbial Genetics & Genetic Engineering BIO250L 
Student Name: GILBBIN 
Access Code (located on the lid of your lab kit): AC-X6 
Lab Report Format Expectations 
Utilize college level grammar and professional formatting when completing this worksheet. 
Submissions without proper formatting, all required photos or sufficient responses will be rejected. 
Pre-lab Questions 
1. Why are the concepts in Lab 7 important in the field of microbiology? 
Microbial genetics forms the cornerstone of un...
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(MB) ASCP Practice Exam Questions and Answers
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(MB) ASCP Practice Exam Questions and Answers 
 
Which of the following is not a component of a nucleotide? 
Phosphate group 
Anti-codon 
Ribose sugar 
Nitrogen base - ANSWER Anti-codon 
 
According to Chargaff's rule of base pairing, adenine pairs with: - ANSWER Thymine 
 
What genes would be screened in a breast cancer panel? - ANSWER HER2, ERBB2, BRCA1 
 
Next Generation Sequencing uses: - ANSWER Short sequence reads 
 
Purines and pyrimidines differ from each other in that: - ANSWER Purine...
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BIOD101: Module 4 Pyrimidines and DNA Questions and Correct Answers 2023/2024
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BIOD101: Module 4 Pyrimidines and DNA Questions and Correct Answers 2023/2024 
Compare and contrast purines and pyrimidines and provide examples of each. - Correct Answer Purines have 2 Carbon nitrogen rings and 4 nitrogen atoms 
(Ex: Adenine [A], Guanine [G]) 
 
Pyrimidines have 1 Carbon nitrogen ring and 2 nitrogen atoms. (Ex: Thymine [T], Cytosine [C]) 
 
Describe the structure and arrangement of DNA. - Correct Answer 
 - DNA is a double helix 
 
- It has 2 strands held together by "rungs" ...
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BioMG 3320 Final Questions with Complete Solutions
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Central dogma Correct Answer-DNA -> RNA -> Protein 
 
Avery-MacLeod-McCarty experiment Correct Answer-demonstrated that DNA is the genetic material because degradation of DNA led to a cessation of bacterial transformation 
 
Nucleotides Correct Answer-Basic units of DNA molecule, composed of a sugar, a phosphate, and one of 4 DNA bases 
 
Key bonds in nucleotides Correct Answer-Glycosidic and ester bonds 
 
glycosidic bond Correct Answer-Between the base and the sugar forms at 1' 
 
Ester...
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NUR4160 Genetics for Nursing Practice FINAL Questions with complete solutions
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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...
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PCOL 838 EXAM 1
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What are the purines and pyrimidines? - Answer-purines: adenine, guanine 
pyrimidines: cytosine, uracil, thymine 
 
What are some examples of the cause of mutations in DNA? - Answer-cellular metabolism, UV light exposure, ionizing radiation, chemical exposure, replication errors 
 
What happens when the DNA is damaged/a mutation occurs? - Answer-cell cycle checkpoint activation, transcriptional program activation, DNA repair, apoptosis 
 
What is the definition of a gene? - Answer-A segment of D...
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MCAT Biology Exam Questions and Answers 100% CorrectMCAT Biology Exam Questions and Answers 100% CorrectMCAT Biology Exam Questions and Answers 100% CorrectMCAT Biology Exam Questions and Answers 100% CorrectMCAT Biology Exam Questions and Answers 100% Co
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Central Dogma - ANSWER - DNA → RNA → Protein 
 
Purines 
- which bases? 
- how many rings? - ANSWER - 
 
Pyrimidines 
- which bases? 
- how many rings? - ANSWER - Remember: "Pyrimidine" has a "y" in it; so does "cytosine" and "thymine."
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