Transcription factors tfs - Study guides, Class notes & Summaries

LIFE 120 UNL Biology Practice Exam 4|33 Questions with Verified Answers Transcription in eukaryotes requires which of the following in addition to RNA polymerase? A) the protein product of the promoter B) ribosomes and tRNA C) aminoacyl synthetase D) start and stop codons E) several transcription factors (TFs) - CORRECT ANSWER E During splicing, which molecular component of the spliceosome catalyzes the excision reaction? A) RNA B) DNA C) protein D) sugar E) lipid - CORRECT ANSW...

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...

AP Bio Genetics, RNA, and DNA Practice Exam 110 Questions with Verified Answers In his transformation experiments, what did Griffith observe? a. Mutant mice were resistant to bacterial infections. b. Mixing a heat-killed pathogenic strain of bacteria with a living nonpathogenic strain can convert some of the living cells into the pathogenic form. c. Mixing a heat-killed nonpathogenic strain of bacteria with a living pathogenic strain makes the pathogenic strain nonpathogenic. d. Infecti...

. Proteins that influence the ability of the RNA polymerase to transcribe a gene are called -Answer Transcription factor General transcription factors bind the _____ to the core promoter. -Answer RNA polymerase Regulatory transcription factors regulate the rate of ____? -Answer Gene transcription Transcription factors recognize what type of sequence elements? -Answer Cis regulatory sequence elements cis regulatory elements -Answer A non-coding DNA sequence in or near a...

Transcription synthesis of RNA from DNA Transcription results in mRNA RNA polymerase makes mRNA mRNA makes proteins RNA polymerase binds to DNA Transcription factors (TFs) A regulatory protein that binds to DNA and affects transcription of specific genes. Can wither activate or repress expression of genes Termination of transcription RNA polymerase reaches a terminator sequence (Stop codon) and detaches from the template

BIO 230 FINAL EXAM ADDITIONAL REVIEW QUESTIONS 1. What are the two components of the proton-motive force? a)pH gradient and equilibrium b) pH gradient and voltage c)voltage and ATP d) voltage and lipid-soluble agents 2. Which molecule is responsible for unwinding DNA supercoils before replication in E. coli? a. DNA helicase b. DNA ligase c. DNA polymerase III d. Gyrase e. Topoisomerase I/II 3. What is the likely cause of an operon that is normally inducible switching to always on, re...

Transcription - correct answersynthesis of RNA from DNA Transcription results in - correct answermRNA RNA polymerase makes - correct answermRNA mRNA - correct answermakes proteins RNA polymerase - correct answerbinds to DNA Transcription factors (TFs) - correct answerA regulatory protein that binds to DNA and affects transcription of specific genes. Can wither activate or repress expression of genes Termination of transcription - correct answerRNA polymerase reaches a terminator sequence (...

A specific sequence of three bases on a strand of DNA or RNA that provides genetic code information for a amino acid Amino acids are building blocks of proteins tRNA An RNA molecule that functions as an interpreter between nucleic acid and protein language by picking up specific amino acids and recognizing the appropriate codons in the mRNA Codons allow for DNA and RNA to communicate Gene Regulation the process of turning genes on and off Gene Regulation occurs during transcription ...

ADVANCED PATHOPHYSIOLOGY- UTMB 5355 EXAM #1 2023/2024 With Questions & Answers (A+ Graded 100% Verified)

5. Compare and contrast the functions of bacterial sigma factor and eukaryotic TFIID. What properties and functions do they have in common? How do they differ? Solution Prokaryotic sigma factors confer specific promoter recognition to RNAP via Sigma subunit 1.1, which acts as a DNA 'mimic' - occupying the downstream DNA binding site. This interaction is displaced only when the promoter region is bound, hence conferring the specificity. Note that Sigma factor on its own cannot ...