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The peptide bond in proteins is a) nonpolar, and fixed in a trans conformation. b) nonpolar, but rotates to three preferred dihedral angles. c) planar, and usually found in a trans conformation. d) planar, but rotates to three preferred dihedral angles.
1 4084If the enthalpy change for a reaction is zero, DG? is equal to: a) DH? b) lnKeq c) TDS? d) -TDS?
1 3925The nucleophile in the first stage of the serine protease mechanism is a) H2O b) the carboxyl of Asp 102 c) the hydroxyl of Ser 195 d) the imidazole of His 57
1 2208The elution volume of an enzyme on a gel filtration column can be predicted from a) its enzyme activity b) its protein absorbance at 280 nm c) subunit composition and monomer molecular mass(es) d) Choices a) and b) are both correct.
1 3342DNA binding by proteins with the helix-turn-helix (HTH) motif does not involve a) altered stacking of the DNA at the center of symmetry. b) hydrogen bonds, salt bridges, and van der Waals contacts. c) interactions with base pairs in the major groove of DNA. d) interactions with the sugar-phosphate backbone of DNA.
1 2192The two exonuclease activities of DNA polymerase I a) are coupled during the formation of "gapped DNA". b) degrade DNA in a 5' --> 3' direction. c) degrade DNA in a 3' --> 5' direction. d) occur at two different active sites.
1 3412A principal difference between prokaryotic and eukaryotic DNA replication is a) completely different proteins/enzymes in eukaryotes b) multiple origins in eukaryotes c) no requirement for topoisomerase activity in prokaryotes d) the absence of a nucleus in prokaryotes
9 37191When s subunit dissociates from an initiated RNA polymerase, a) it can bind a core enzyme to reform holoenzyme. b) it hydrolyzes ATP until rebound by core enzyme. c) it leaves behind an elongating species complexed with Rho factor. d) it remains bound to the promoter consensus sequence.
1 3896The junction between the two helical portions of tRNA is stabilized by many non-standard base-base interactions between residues in the a) anticodon and CCA ends. b) helical stems of the D and Anticodon stems. c) loops of the Anticodon and Acceptor stem. d) loops of the TYC and D arms.
1 4102On the ribosome, mRNA binds ____; the peptidyl transferase reaction occurs ____. a) to the large subunit; on the small subunit. b) to the small subunit; on the large subunit. c) between the subunits; on the large subunit. d) between the subunits; on the small subunit.
2 6301According to the fluid mosaic model of cell membranes, which type of molecule spans the membrane from its inner to outer surface? a) cholesterol b) phospholipid c) protein d) triacylglycerol
1 5587
Why did you want to become an astronomer?
can you email me because I have a report and I need you to answer these questions if you would like to if not I completely under stand.
What types of math do you use? Re: calculus, algebra, fractions?
how do you get on with your current boss
I am doing my m.sc biotechnology.but i don't know about the interview questions of various company and how i have to face.can you please anyone send that placement papers?thank you
can you send me the previous years drug inspector exam model papers of andhrapradesh
dear sir i need rrb chennai Section engineer S & T for last 2 year question papers. Plz send my email id is gsmaliniraj@yahoo.co.in, malinisankaram@gmail.com
can any one give me the question bank for Lab Technician to appear for my HAAD exam . Please send me the Qs. my mail Id is abdullahraj10@yahoo.com Please help. thks.
What do you enjoy most being an Astronomer?
mention few medical representative companies around mysore
if u've any queries or need more info about biocon interviews. u jus mail to raaju_kaarthikeyan@yahoo.co.in
Have you learned any new math tactics or shortcuts with your job?
i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me
Tell me do you hold active wa dental assistant registration?
meron po bang minerals ang astoroids po ba?
