PEBC Part I sample questions with answers 100% correct 2023

PEBC Part I sample questions with answers 100% correct 20231 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. - correct answer 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. - correct answer b 3 β-Carotene is the precursor of: a. retinol. b. thiamine. c. calciferol. d. riboflavin. e. retinoic acid - correct answer a 4 True statements regarding transcription include which of the following? a. The enzyme responsible for initiating transcription is RNA polymerase. b. The enzyme responsible for initiating transcription is DNA polymerase. c. During transcription, the genetic information contained in the nucleotide sequence of tRNA is translated into a protein structure. d. The process of transcription includes the splicing of exons. e. Following initiation, the next stage of transcription is termination. - correct answer a 5 Diphtheria is caused by: a. Plasmodium. b. Vibrio. c. Shigella. d. Neisseria. e. Corynebacterium. - correct answer e 6 Which of the following blood vessels transports nutrient rich blood from the intestines to the liver? a. Hepatic artery b. Hepatic portal vein c. Great saphenous vein d. Inferior vena cava e. Superior vena cava - correct answer b 7 The blood volume of the average adult is approximately: a. 5 L. b. 10 L. c. 15 L. d. 20 L. e. 25 L. - correct answer a 8 In adults, community-acquired pneumonia caused by which of the following organisms is associated with the highest mortality rate?