Nucleoside - Study guides, Class notes & Summaries

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?) ...

IB Biology Paper 2 Section B Questions and Answers Already Passed Draw a labelled diagram of the human adult male reproductive system. [5 marks] a. scrotum - shown around testes; b. testes/testis/testicles - shown inside scrotum; c. epididymis - shown adjacent to testis and connected to sperm duct; d. sperm duct/vas deferens - double line connecting testis/epididymis to urethra; e. seminal vesicle - sac shown branched off sperm duct (not off the urethra); f. prostate gland - shown positi...

Module 4 Exam - Requires Respondus LockDown Browser + Webcam ● Due No due date ● Points 100 ● Questions 25 ● Time Limit 60 Minutes ● Requires Respondus LockDown Browser Question 1 4 / 4 pts Fill-in-the-Blank: A nitrogenous base plus a deoxyribose is called a ________, and a base plus deoxyribose plus a phosphate group is called a _________. Answer: nucleoside, nucleotide (See section 4.1 in module). Question 2 4 / 4 pts Describe the function of the checkpoints in the ce...

Organic Chemistry 10th Edition by Francis Carey - Test Bank

Biology 116 Final Exam Questions And Answers Graded A+ Determination of what DNA is made of ANS Hershey and Chase marked Virus's with two different radioactive molecules (32p labels DNA, 35s labels protein) 32p was found only inside of infected cells 35s was found in ghost shells Nucleic Acid ANS polymer of nucleotide monomer Nucleotide ANS phosphate group+ sugar+ base synthesized from nucleoside triphosphates (NTPs) Nucleoside ANS sugar + base Ribose ANS found in RNA ...

NUR 355 Exam 2 1. Active Natural Immunity: Received by exposure to a pathogen (e.g. getting COVID through exposure) a. Longest acting 2. Active artificial immunity: Vaccines 3. Innate: Natural (what your born with) 4. Natural passive: Breastfeed babies acquiring antibodies through breast milk 5. Artificial Passive: Immune serum 6. Type 1: Allergic (IgE) i. Anaphylaxis ii. Emergency b. Symptoms: i. Facial swelling ii. Auditory wheezing iii. Stridor iv. Maintain airway 7. Type 2: C...

Binds to phospholipids in the fungal cell membrane, which increases permeability and allows leakage of essential cellular constituents. a. Ketoconazole b. Nystatin c. Fluconazole d. Clotrimazole Clotrimazole Punctures cell membrane Binds to sterols in the fungal cell membrane, which increases permeability and allows leakage of essential cellular constituents. a. Ketoconazole b. Nystatin c. Fluconazole d. Clotrimazole Nystatin Punctures cell membrane Alteration of cell membrane perm...

Nonselective Beta-Adrenergic Blocking Agent (Alfa Beta Blocker) (Propranolol) Actions: Competitively blocks receptors in heart (= decreased HR contractility, excitability, membrane stabilization, decrease arrhyth., decrease heart workload, decrease O2 use) & in juxtaglomerular app. in nephron (no renin released = further decrease in BP. Indication: *HTN, angina, migraine headaches Re-infarction after MI's Prevention of stage fright Essential tremors Nucleoside inhibitors (Zidovudine) Indicatio...

Histones are rich in what AAs? - ANSWER ☑☑Lysine and arginine (both + charge) When does histone synthesis occur? - ANSWER ☑☑S phase (along with DNA getting synthesized) Heterochromatin is _________, euchromatin is _________ - ANSWER ☑☑Inactive/condensed; active/accessible What allows mismatch repair enzymes to distinguish between old and new DNA strands in prokaryotes? - ANSWER ☑☑Methylation; old/template strands are methylated, new/daughter strands are unmethylated ...

TTCNUR161Test2ExamStudyGuide. Nonselective Beta-Adrenergic Blocking Agent (Alfa Beta Blocker) (Propranolol) - Actions: Competitively blocks receptors in heart (= decreased HR contractility, excitability, membrane stabilization, decrease arrhyth., decrease heart workload, decrease O2 use) & in juxtaglomerular app. in nephron (no renin released = further decrease in BP. Indication: *HTN, angina, migraine headaches Re-infarction after MI's Prevention of stage fright Essential tremors ...