Exam (6) - 1. Which of the following is/are true concerning...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
1. Which of the following is/are true concerning introns? (A) The sequence of nucleotides found in introns are not known to represent anything usable by the cell. (B) All the choices are true except for saying that introns do not represent anything usable by the cell. (C) Introns can function to regulate gene expression. (D) Introns are sections of nucleotides found on a mRNA transcript. (E) RNA splicing usually removes introns from a mRNA molecule. 2. During the elongation of a polypeptide chain, _________ occurs when the mRNA moves to the next site on the ribosome to read the next codon. (A) translation (B) transcription (C) translocation (D) transference 3. Which of the following would be transcribed into a piece of mRNA? (A) a noncoding gene (B) a ribozyme (C) a promoter (D) a protein-coding gene 4. The idea that a single gene coded for a polypeptide rather than an enzyme was evident from the (A) presence of a mutation in one chain of hemoglobin but not in the other. (B) transformation of bacteria from rough and non-virulent to smooth and virulent. (C) use of X rays to make nutritional mutants in bread mold. (D) finding that some genes in eukaryotes are split by introns. (E) discovery that mutated genes changed enzymes in a biochemical pathway. 5. Today, it is most appropriate to state that a gene controls (A) one enzyme. (B) one amino acid. (C) one starch, amino acid or lipid molecule. (D) one protein. (E) one polypeptide chain. 6. The use of electrophoresis in hemoglobin was important because it showed that (A) normal hemoglobin is shorter than sickle-cell hemoglobin. (B) human hemoglobin is missing in sickle-cell anemia patients. (C) normal hemoglobin has a different electrical charge than sickle-cell hemoglobin. (D) normal hemoglobin is longer than sickle-cell hemoglobin. (E) human hemoglobin is different from mouse hemoglobin. 7. Which of the classes of RNA molecules carries the genetic information as it is needed for the construction of a protein? (A) messenger RNA (B) transfer RNA (C) ribosomal RNA (D) primary mRNA transcript 8. Which of the classes of RNA molecules carries the amino acids that are added to the growing polypeptide chain? (A) ribosomal RNA (B) primary mRNA transcript (C) messenger RNA (D) transfer RNA 9. Which of the classes of RNA molecules is linked with proteins in forming the large and small subunits of a cytoplasmic structure? (A) ribosomal RNA (B) primary mRNA transcript (C) messenger RNA (D) transfer RNA 10. Prior to protein synthesis, the DNA (A) contains anticodons that must become codons. (B) serves as a template for the production of mRNA. (C) attracts tRNAs with appropriate amino acids. (D) must first undergo replication. (E) adheres to ribosomes for protein synthesis. 11.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/18/2012 for the course ECE 333 taught by Professor Overby during the Spring '09 term at University of Illinois, Urbana Champaign.

Page1 / 11

Exam (6) - 1. Which of the following is/are true concerning...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online