BioChemistry > QUESTIONS & ANSWERS > BIOCHEMISTRY SECTION-USMLE STEP 1|QUESTIONS WITH CORRECT ANSWERS (All)

BIOCHEMISTRY SECTION-USMLE STEP 1|QUESTIONS WITH CORRECT ANSWERS

Document Content and Description Below

which histone ties DNA-histone nucleosome beads into more condensed structures? Correct Answer H1 is DNA acidic or basic? Correct Answer acidic what type of aa are histones made of? are they aci... dic or basic? Correct Answer lysine and arginine; basic is heterochromatic more accessible or less accessible to TF? euchromatin? Correct Answer less; more if a cell has a hyperchromatic or condensed nucleus is it undergoing transcription etc? Correct Answer no what are chromosomes? during what part of the cell cycle are they found? in what pathologic state would you see a lot of chromosomes? Correct Answer highly condensed forms of DNA; mitosis; neoplasia- highly dividing and thus hyperchromatic what experiment is chromosomes used for? Correct Answer karyotyping are histones in heterochromatin or euchromatin more methylated? which had more acetylated histones? Correct Answer heterochromatin; euchromatin what does guanine have on it? Correct Answer a ketone what does thymine have on it? Correct Answer a methyl deamination of what pyrimidine makes what? Correct Answer cytosine to uracil in what genetic code is uracil found in? in replace of what? Correct Answer uracil; thymine how many bonds does a G-C connection have? what type of bonds? how about a A-T? Correct Answer 3 hydrogen bonds; 2 hydrogen bonds what amino acids are required in purine synthesis? which of these does pyrimidine synthesis require also? Correct Answer glutamine, aspartate, glycine; aspartate what is the difference between a nucleotide and a nucleoside? Correct Answer nucleoside is just the ribose plus the base; nucleotide is the ribose plus the base but the phosphate bond [Show More]

Last updated: 2 years ago

Preview 1 out of 61 pages

Buy Now

Instant download

We Accept: