Chapter 3 RNA And Translation Flashcards
This paper describes the unusual situation of a polypeptide being extended by two different point mutations. How is this possible?
A) Both point mutations change the first base pair of a codon
B) Both point mutations change a nucleotide to a ‘‘C”
C) Both point mutations change the third base pair of a Serine
D) Both point mutations change the same stop codon to a non-stop codon
E) None of the above
D) Both point mutations change the same stop codon to a non-stop codon
This molecule is not required to make a polypeptide:
A) rRNA B) Helicase C) mRNA D) tRNA E) All are required to make a polypeptide
B) Helicase
You need this molecule to make microRNA:
A) DNA polymerase B) RNA polymerase C) Ribosomes D) tRNA E) mRNA
B) RNA polymerase
The process regulated my microRNA:
A) Translation B) Transcription C) Transpiration D) Meiosis II E) all of the above
A) Translation
The process interrupted by siRNA is:
A) mitosis B) transcription C) translation D) meiosis II E) All of the above
C) translation
Incorporation of amino acids into a growing polypeptide has stopped, which one of the following molecules is most likely lacking in the cell?
A) siRNA B) ribosome C) DNA polymerase D) charged tRNA E) rRNA
D) charged tRNA
Your genome of interest has a 40% G/C content. What is the percent of the genome that is Guanine?
A) 60% B) 20% C) 35% D) 30% E) 40%
B) 20%
The following is an mRNA sequence. What was the CODING sequence? 5’- AUCCAAAACGUUGA - 3’
A) 5’- ATCCAAAACGTTGA - 3’ B) 5’- TACCTTTTGCAACT - 3’ C) 3’- TACCTTTTGCAACT - 5’ D) 5’- AGTTGCAAAAGGTA - 3’ E) The sequence is not listed in A-D
A) 5’- ATCCAAAACGTTGA - 3’
Given the following DNA coding sequence 5’ - CGATGATGCCTCATTGT - 3’, what is the resulting polypeptide in single letter annotation (beginning from the start codon only)?
A) 5'-RSFLI... -3' B) 5'-MIPHC...-3' C) 5'-GCTACTAAGGAGTAACA-3' D) 5'-MMPHC...-3' E) None of the above
D) 5’-MMPHC…-3’
Which of the following carry out their functions in the cytoplasm?
A) microRNA B) siRNA C) tRNA D) mRNA E) All carry out their functions in the cytoplasm
E) All carry out their functions in the cytoplasm
Which of the following are created in the nucleus?
A) microRNA B) siRNA C) tRNA D) mRNA E) All are created in the nucleus
E) All are created in the nucleus
True or False?
Alternative splicing means an intron can be left in edited rRNA
False
True or False?
Alternative splicing means that an exon can be removed from a transcript
True
True or False?
The RNA induced silencing complex (RISC) is used with microRNA to regulate mRNA
True
True or False?
There are several exceptions to the codons used for polypeptide synthesis
True
