Mirna - Study guides, Revision notes & Summaries

nucleotides correct answers monomeric unit for nucleic acids and are composed of nitrogenous base, 5-carbon sugar and a phosphate nucleic acids are biopolymers of correct answers nucleotide monomers DNA correct answers -more stable - carrier of genetic information - double stranded RNA correct answers - less stable - intermediate in expression of genetic information - can form secondary structure (as in tRNA) by hydrogen bonding with itself - not all forms of RNA are intermediates ...

What does every gene require for activation of transcript by RNA poly II? - answer-Non specific proteins (PIC) and elements (TATA) Right time and place? - answer-specific proteins and elements RNA poly II has - answer-a lot of binding sites for splicing to occur and synthesize RNA HDAC inhibitors increase or decrease fetal HgB expression - answer-increases but does not directly interact w polymer Which of the following could inhibit transcription? - answer-DNA binding proteins that l...

ACS BIOCHEMISTRY EXAM QUESTIONS AND ANSWERS 2024 what are nucleotides? nucleotides are the monomer unit for nucleic acids and are composed of nitrogenous bases, 5 carbon sugars and a phosphate group. nucleic acids are bipolymers of _____ nucleotide monomers what is DNA and what is its stability? DNA is more stable than RNA and carries genetic information, and is double stranded. what is RNA and what is its stability? RNA is less stable and is an intermediate in expression of genetic in...

GNRS 515 Advanced Pathophysiology Exam Questions with Correct Answers DNA replication - Answer-untwisted and zipped by hydrogen bonds being broken between two pairs DNA polymerase - Answer-pairs new bases, aka complementary base pairing (ATCG) Chromosome aberrations occur where? - Answer-occurs among number or structure Explain base pair substitution - Answer-mutation where ATCG base pairing is mixed Missense mutation - Answer-A base-pair substitution that results in a codon that codes ...

BIO 2120 Exam 2 - Questions and Answers RNA secondary and tertiary structure Defined by base pairing that forms stem-loops, critical for fitting onto the ribosome Genetic code collection of codons of mRNA, each of which directs the incorporation of a particular amino acid into a protein during protein synthesis In vitro translation Protein synthesis in a cell-free extract. How many possible codons are there? 64 61 specify an amino acid 3 are stop codons that signal the termination of protein sy...

• A patient with scalp seborrhea , what pharmacological treatment in a shampoo a. Salicylic acid b. Selenium dioxide c. Coal tar d. triclosan In mild cases, a topical antifungal cream or medicated shampoo (such as ketoconazole, selenium sulfide and dioxide, coal tar, and zinc pyrithione) may be enough to control symptoms. • Where is the anticodon a. tRNA b. mRNA c. DNA d. MiRNA Each tRNA contains a distinct anticodon triplet sequence that can form 3 complementary base pairs to o...

What is the first mRNA processing step? - ANSWER 5' capping Different mRNAs are made from the same initial pre-mRNA by ________. - ANSWER alternative splicing RNA transcription begins at a ________. - ANSWER promoter ________ protect(s) the pre-mRNA molecule. - ANSWER the 3' poly-a tail The process of pre-mRNA splicing removes ________. - ANSWER introns Spliced ________ differ in their exons. - ANSWER mRNAs Identify the three phases of transcription. - ANSWER initiation, elongation, te...

MMSC 490 Exam 2 Questions and Answers All Correct The genomes of salamanders contain ten times more DNA than the genomes of humans because salamanders - Answer-have more noncoding DNA than humans have. A gene can be defined as a segment of DNA that codes for - Answer-functional product. Introns in mRNA-coding genes are the transcribed sequences - Answer-between protein-coding sequences. In the nucleus, introns are removed from transcripts by - Answer-splicing introns can encode - Ans...

Biochemistry ACS Test Questions and Answers What are nucleotides? - ANSWER the monomer unit for nucleic acids and are composed of nitrogenous base, 5-carbon sugar & phosphate group Nucleic Acids are biopolymers categorized as: - ANSWER DNA RNA DNA - ANSWER carrier of genetic information RNA - ANSWER intermediate in gene expression (not all) can form secondary structure - tRNA 4 types of RNA - ANSWER tRNA rRNA siR...

activators - TFs that increase the levels of transcription initiation Adaptive mutations - evolutionary change and adaptation to new environments, stressful conditions darwins birbs AP - activator proteins ARE - AP2 response elements Base analogs (chem induced - 5-bromouracil resembles thymine, except that it has bromine atom in place of methyl on 5' C base excision repair (BER) - repairs damaged base by using AP endonuclease to cleave damage on 5' side and DNA polymerase add new base...