Intron splicing - 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...

BIOCHEM406 Practice Exam 3|103 Questions with Verified Answers Pick the best answer. A) The ratio of purine to pyrimidine 2 ́-deoxyribonucleotides in cells is always very close to 1. B) The ratio of (A+T) to (G+C) in cellular RNA polymers is always very close to 1. C) The ratio of (A+T) to (G+C) in cellular DNApolymersis always very close to 1. D) Answers B and C. E) Answers A and B and C. - CORRECT ANSWER A) The ratio of purine to pyrimidine 2 ́-deoxyribonucleotides in cells is alwa...

AAMC FL 1 FULL REVIEW 2024 - Bio-Biochem Exam Based on the data presented in the passage, which statement best describes the HSP110ΔE9 allele? A.Cancer-promoting and dominant to HSP110WT B.Cancer-promoting and recessive to HSP110WT C.Cancer-suppressing and dominant to HSP110WT D.Cancer-suppressing and recessive to HSP110WT -Answer-Cross out A and B. LOOK AT THE FIGURE! Tumor volume is DOWN. Table 2 shows that HSP110ΔE9 allele when mixed with HSP110WT there is more apoptotic cells. So ...

B-B AAMC FL 1 Exam Questions and Answers Based on the data presented in the passage, which statement best describes the HSP110ΔE9 allele? -Answer-According to Figure 1, as compared to HSP110WT, HSP110ΔE9 slows tumor growth, and thus, it is cancer-suppressing. According to the data in Table 2, HSP110ΔE9 counteracts the ability of HSP110WT to prevent protein aggregation and prevent apoptosis; thus, the HSP110ΔE9 allele is dominant to the HSP110WT allele. Based on the passage, in MSI CRC ...

Lesch-Nyhan Syndrome: what causes it and what are manifestations? - ***HGPRT deficiency in purine salvage pathway (this enzyme normally converts hypoxanthine to IMP and guanine to GMP). This deficiency leads to excessive Uric acid production and de novo purine synthesis. It is X linked recessive. Symptoms: hyperuricemia, gout, aggression / self mutilation, mental retardation, dystonia. 2. Treatment for Lesch-Nyhan? - ***Allopurinol / febuxostat second line. Both of these drugs inhibit...

Which of the following mutations would be most likely to have a harmful effect on an organism? -a single nucleotide insertion downstream of, and close to, the start of the coding sequence -a single nucleotide deletion near the end of the coding sequence -a deletion of three nucleotides near the middle of a gene -a single nucleotide deletion in the middle of an intron a single nucleotide insertion downstream of, and close to, the start of the coding sequence Which of the following methods is NOT...

Genetics Second Exam Practice Test 150 Questions with Verified Answers Which organism has polycistronic mRNA? (eukaryotic or prokaryotic) - CORRECT ANSWER Prokaryotic Do prokaryotes undergo splicing/processing? - CORRECT ANSWER No Where are attenuater sequences found? (what type of organism and what class of operons?) - CORRECT ANSWER In prokaryotic amino acid operons Do prokaryotic mRNA ALWAYs encode trans-acting factors? - CORRECT ANSWER No Which of the following statements is t...

SI Practice Exam 4 |57 Questions with Verified Answers Which of the following statements is FALSE of the spliceosome and splicing mechanism? a. U1 snRNA base pairs with the 5' splice site b. The active spliceosome is produced when U1 and U3 snRNP exit c. U2 snRNA and U6 snRNA base pair to each other for the 1st reaction to occur d. U2 snRNA anneals to the branch site in the intron - CORRECT ANSWER b. The active spliceosome is produced when U1 and U3 snRNP exit Where are SR protein...

Module 2 Exam Practice 113 Questions with Verified Answers What does RNA Pol I transcribe? - CORRECT ANSWER rRNA What does RNA Pol II transcribe? - CORRECT ANSWER mRNA snRNA What does RNA Pol III transcribe? - CORRECT ANSWER tRNA rRNA snRNA What is wrong with this definition of a gene? "A gene consists of DNA sequences that encode a single polypeptide" - CORRECT ANSWER 1. Not all genes are DNA sequences (RNA viruses) 2. Not all RNA molecules encode for a single polypeptide L...

which of the following statements regarding a DNA double helix is always true? - the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine working in a coroner's office, you are investigating the mysterious death of a person found in the wooded area in the spring of the year. during a cellular analysis of this body, you learn that the levels of mRNA that can be obtained from critical tissues are very low, and you find mushrooms in...