Pre mrnas - Study guides, Class notes & Summaries

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...

Ap Bio Chapter 18 Practice Test 99 Questions with Verified Answers The role of a metabolite that controls a repressible operon is to - CORRECT ANSWER e) bind to the repressor protein and activate it The tryptophan operon is a repressible operon that is - CORRECT ANSWER E) turned off whenever tryptophan is added to the growth medium. Which of the following is a protein produced by a regulatory gene? - CORRECT ANSWER D) repressor A lack of which molecule would result in the cell's ina...

BISC 440 cell and molec exam 2 questions and answers graded A+ Elongation factors check the accuracy of codon-anticodon pairing and increase the rate of translation RNA polymerase II requires general transcription factors to help position it correctly at the promoter Polyribosomes (complexes of two or more ribosomes) can be seen in the electron microscope. What is holding the ribosomes together? mRNA In eukaryotes, but not prokaryotes, ribosomes find the start site of tr...

Genetics Exam 2 practice exam 107 Questions with Verified Answers In five Hfr strains, each of which was used to build a time-of-entry map, the genes entered the recipient cells as follows: Strain 1: S L A C T F Strain 2: N P F T C A Strain 3: T F P N U Y Strain 4: S H Y U N P Strain 5: U N P F T C Which of the following represents a correct compilation of these results? A) S L A C T F P N H C U B) N P F T S L A C H U T C) T C A L S P N U Y H D) U N P F T C A L S T F E) S L A C T F...

Define biotechnology - Answer- The use of technology to improve living organism and processes for the bennifit of man Briefly state the main difference of modern from classical biotechnology - Answer- Modern BTEC involves recombinant DNA technology Selective breeding is an early form of classical biotech, where there is deliberate crossing of parent organisms with favorable traits. Name two vegetables that are products of selective breeding from one common ancestor that were shown in the l...

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...

Pre-mRNA is the initial processing byproduct of mRNA transcription and is crucial for the expression of genes in mammalian cells, since the majority of protein-coding genes are broken by intermediate regions (introns) (Han et al., 2011). Part 1 The first and initial action in the pre-mRNA processing is the addition of an mRNA cap at the 5' end. Once the RNA's initial 20–30 nucleotides have been created, capping takes place. According to Cohen, 7- methylguanosine residue is added to the...

What is the difference between the coding and non-coding region? Coding region: comprised of genes that encode proteins (instructions that determine traits) and makes up 1-2% of human DNA. • Noncoding region: makes up 98-99% of human DNA, contains STRs and is responsible for regulatory functions such as gene transcription. What are STRs? Short-tandem repeats (STRs) are unique repeating patterns of the same nucleotide sequence. They can be used to differentiate one person from another....

What is the difference between the coding and non-coding region? Coding region: comprised of genes that encode proteins (instructions that determine traits) and makes up 1-2% of human DNA. • Noncoding region: makes up 98-99% of human DNA, contains STRs and is responsible for regulatory functions such as gene transcription. What are STRs? Short-tandem repeats (STRs) are unique repeating patterns of the same nucleotide sequence. They can be used to differentiate one person from another....

Chapter 03 Cell Structure and Genetic Control     
True / False Questions
  1.  The cell is the basic structural and functional unit in the body.  
TRUE   
Blooms Level: 1. Remember
Learning Outcome: 03.01
Section: 3.01
Topic: Cells
    
Multiple Choice Questions
  2.  The _____________ is the liquid portion of the cell between the plasma membrane and nucleus.  
A.  cytoskeleton 
B.  peroxisome 
C.  cytosol 
D.  phospholipids   
Blooms ...