Biomolecules Questions and Answers

15. Origins of replication are the a. sites where DNA transcription starts. b. binding sites for the protein complex that initiates DNA synthesis. c. loops with two replication forks seen in replicating DNA d. forks where DNA replication is occurring.

Which of the following is NOT true of protein folding? in the process of folding, a protein passes through a number of intermediate states the "native state" of the protein is the final destination of all polypeptides proteins start in a state of maximum entropy hydrophobic interactions are important drivers of protein folding

What is a half-life, in reference to dating fossils? the amount of volcanic rock in a fossil the amount of time it takes for half of carbon-14 to decay the amount of fossils that made it to half their life expectancy the time is takes for a fossil to form

The series of reactions that release glucose monomers from glycogen is... O Glycocalyx O Glycogenesis O Glycogenolysis O Gluconeogenesis O Glycolysis

Which of the following is a primary participant in cloning an isolated gene? Restriction endonuclease Host organism a vector all of these

Which of the following is best to sterilize heat labile (heat unstable) solution? autoclave dry heat gamma rays UV rays deep freezing

An enzyme that recognizes a specific (palindromic) sequence and cuts within a DNA molecule is called a(n): Orestriction endonuclease Omodification enzyme Omethylase Oexonuclease

Draw the condensed structural formula for Val-Ala-Leu. (16.1, 16.2, 16.3) Would you expect to find this segment at the center or at the surface of a protein? Why?

Which of the following is NOT a desired characteristic of DNA vectors used in gene cloning procedures? a. self-replication b. copied using reverse transcriptase c. has a selectable marker d. circular form of DNA or integrates into the host chromosome e. may replicate in several species.

DNA is wrapped around proteins to form fibers called chromatin. True False

The half-life of a reaction of compound A to give compounds D and Eis 35.5 min when the initial concentration of A is 0.150 M. How long will it take in min for the concentration to drop to 0.0375 M if the reaction is first order with respect to A. Where as, In[A] - = - kt + In[A], for a first order reaction. Report your answer to 1 decimal place

Which sentence below has incorrect subject/verb agreement? A. Playing games are something that will keep you entertained. B. Playing games is something that will keep you entertained. C. Playing games is something to do in your free time. D. Playing games was something we did when we were kids.

What is the type of RNA that is involved in transcription? Select one: O Messenger RNA (mRNA). O Ribosomal RNA (rRNA). O Transfer RNA (TRNA) O Transport RNA (tRNA).

Inheritance and Expression of Traits:Question 8 What are the building blocks of proteins? Glucose molecules. Nucleotides. Fatty acids. Amino acids.

Hydrophobic molecules precipitate ALL OF THESE NONE OF THESE aggregate dissolve in water.

Which of the following is the least important role of proteins in biological systems? O catalysts Csignal molecules structural elements receptors for signal molecules long-term information storage

Secondary metabolites are organic compounds that are produced outside of the primary metabolic processes that create the materials for structure and growth. Based on this information, which of the following is an example of a secondary metabolite? O steroids. O carbohydrates. ODNA & RNA. O proteins. O lipids.

What ion gradient is used as the energy input for gradient driven pumps in plants and fungi? A. K+ B. H+ C. Ca²+ D. None of these. Only animals have gradient driven pumps.