Pre mrnas - Study guides, Class notes & Summaries

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...

RNA nucleotide base pairings - Cytosine (C) pairs to Guanine (G) Adenine (A) pairs to Uracil (U) DNA Sructure - because of this complementary base pairing, the order of the bases in one strand determines the order of the bases in the other strand Griffith's Experiment - in the 1920's, Frederick Griffith worked with two strains of Streptococcus pneumoniae bacteria. It was discovered that DNA was transmitted between the toxic and the harmless bacteria. DNA - -deoxyribonucleic acid -store...

• DNA = phosphate + deoxyribose sugar + A/T/C/G o Contains two strands. The strands are antiparallel (opposite each other). o 5’ → 3’ 3’ ← 5’ • RNA = phosphate + ribose sugar + A/U/C/G o Single strand, can fold back onto itself and form pairs between itself (stem‐loop). • Each nucleic acid is made up of polymers (many monomers) that are called nucleotides. o Nucleotides contain one or more phosphates, a five‐carbon sugar, and a nitrogen base. o Nucleotides are alway...

Bio Core II Exam 1 | Actual Exam Questions | 100% Correct Answers | Verified 2024 Version 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...

alternative splicing - - Splicing of introns in a pre-mRNA that occurs in different ways - leads to different mRNAs that code for different proteins - Increases the diversity of proteins. dna transcription vs replication - - replication synthesizes new (daughter) DNA - transcription of DNA forms RNA does the structure of the DNA (nucleosomes) impact the ability of the RNA polymerase to transcribe genes? - - yes - tightly bound nucleosomes, it's harder to get to the DNA so there is less e...

RNA pol II transcripts are processed (1 point): - ANSWERS: co-transcriptionally An unprocessed mRNA is known as a (1 point): - ANSWERS: primary transcript (also known as pre-mRNA) Name three processing steps that occur on eukaryotic mRNA - ANSWERS: Addition of 5' cap, addition of 3' poly A tail, removal of introns (splicing) The 'Shatkin experiment' used radio-labeled capped and uncapped mRNA to show that in addition to protection, the 5' cap is also required for - ANSWERS: Require...

Eukaryotic pre-mRNAs undergo three processing steps to become mRNA. What are they? 1. 5' cap addition 2. 3' poly-A tail addition 3. Splicing What stimulates resting B-cells to become plasma cells, divide and secrete antibody? Finding its target/binding of antigen to the antibody displayed on its surface How many different polypeptide chains are in a IgG-antibody Two (two copies of heavy chain & two copies of light chain) If a heavy chain gene has 50 V segments, 25 D segments, and 6...

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 ...

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 ...

Biology Exam 4 Practice Test 41 Questions with Verified Answers For this pair of items, choose the option that best describes their relationship. (A) The probability that amino acids with polar side chains are hydrophobic. (B) The probability that amino acids with side chains containing an -OH group are hydrophilic. A) Item (A) is greater than item (B). B) Item (A) is less than item (B). C) Item (A) is exactly or very approximately equal to item (B). D) Item (A) may stand...