Representative Questions: Exam 1 Please note: we are covering more material this year in exam one,
There will undoubtedy be questions similar to those in the assigned problem sets, as well, so be sure to
Please choose the best answer for each question, 1 to 50. Score=2 points/correct answer.
1.Which of the following is FALSE, regarding prokaryotes?
Prokaryote genomic DNA is comprised of one double-stranded circular molecule.
Prokaryote DNA is contained in a region called the nucleoid.
Archaebacteria and Eubacteria are prokaryotes.
The bacterium, E. coli, and the yeast, S. cerevisiae are prokaryotes
2.The four major groups of macromolecules are:
DNA, RNA, proteins and lipids
Acids, bases, proteins and carbohydrates
Proteins, water, lipids and carbohydrates
Proteins, nucleic acids, carbohydrates and lipids
3. All chiral amino acids have (L) stereochemical designation
4. The following mRNA AAAU
, when translated, will yield the
peptide : ______Met.Leu.Gly.Glu.Trp________________
5. Which of the following is TRUE?
DNA is used as a template by the ribosome during translation.
RNA is transcribed by the ribosome during the synthesis of protein.
DNA is used as a template during transcription of RNA.
DNA is used as a template during translation of RNA.
6.Which of the following, regarding lipids, is FALSE?
Lipids are largely non-polar in nature.
Cell membranes are made up of lipid polymers.
Lipids provide structure.
Lipids act as signaling molecules.
7.Which of the following is FALSE?
Proteins are polymers of amino acids joined together by ionic bonds
In aqueous solution, proteins are surrounded by a hydration shell of water molecules
In aqueous solution, proteins form hydrogen bonds with water molecules.
In aqueous solution, polar amino acids are most commonly on the outside of a protein,
and interact with the solution.
8.Which of the following are TRUE regarding covalent bonds:
Bonding valence electrons are attracted by both nuclei in the bond
Bond length depends on the nature of the atoms bonded and the number of electrons
participating in the bond.
Electrons are shared between the bonding pair of atoms.
All the above are true
Only a. and c. are true