341fall08exam1a

341fall08exam1a - BIO 341 Principles of Cell Biology...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
BIO 341 Principles of Cell Biology Your Name ____________________ Examination 1, October 3, 2008 All marks on the answer sheet must be completed with a number 2 pencil. You must enter your full name, last name first , in the columns on the back of the answer sheet. Enter your student number in the section entitled Identification Number. Enter the version number 1 in circle 1 in the section entitled Grade or Education below the name columns. It is not necessary to fill out the other boxes. You must turn in this examination containing the multiple choice questions. Choose the answer that is most correct in the following questions and enter your answer on the front of the answer sheet: (2.5 points each) 1. RNA polymerase found in procaryotic cells a) synthesizes RNA in the 3' 5' direction (referring to the ends of the RNA molecule) b) synthesizes RNA in the 5' 3' direction (referring to the ends of the RNA molecule) c) couples formation of each new phosphodiester bond in the RNA molecule to hydrolysis of an ATP molecule to ADP and phosphate d) a and c are true e) b and c are true 2. Which of the following are procaryotic organisms? a) all species of fungi b) all species of archaea c) all species of eubacteria d) the members of both b and c are procaryotic organisms e) the members of a, b and c are all procaryotic organisms 3. The eucaryotic genes encoding ribosomal RNA are transcribed in the same area of the cell in which the ribosomal subunits are assembled. This location is a) within the heterochromatin b) within the nuclear lamina c) within the nucleolus d) within the less dense, more fluid nucleoplasm areas of the nucleus e) within the cytosol of the cell 4. Which of the following is true? a) an A-T basepair is stronger than a G-C basepair because the A-T basepair contains three hydrogen bonds b) an A-T basepair is stronger than a G-C basepair because the A-T basepair contains four hydrogen bonds c) A-T and G-C basepairs are equivalent in strength, each containing three hydrogen bonds d) an A-T basepair is weaker than a G-C basepair because the G-C basepair contains three hydrogen bonds e) an A-T basepair is weaker than a G-C basepair because the G-C basepair contains four hydrogen bonds
Background image of page 1

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

View Full DocumentRight Arrow Icon
5. Which of the following is true, when comparing procaryotic gene expression in eubacteria to gene expression in eucaryotic cells? a) most procaryotic transcripts require no processing, allowing translation to begin as soon as the 5′-end of the mRNA is available for ribosome binding b) most procaryotic transcripts contain no introns, but must be covalently modified at both the 5′-end and 3′-end of the mRNA before translation can begin c) most procaryotic transcripts require covalent attachment of a ribosome-binding sequence at the 5′-end, but no other processing events are required before translation begins d) most procaryotic transcripts require covalent attachment of a ribosome-binding sequence at the 3′-end, but no other processing events are required before translation begins
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

341fall08exam1a - BIO 341 Principles of Cell Biology...

This preview shows document pages 1 - 3. Sign up to view the full document.

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