27. Roughly how many amino acids are there in one turn of an helix? a. 1 b. 2.8

Question

27. Roughly how many amino acids are there in one turn of an helix?

a. 1 b. 2.8 c. 3.6 d. 4.2 e. 10

28. The formation of a peptide bond between two amino acids is an example of a(n) ______________ reaction.

a. cleavage b. condensation c. group transfer d. isomerization e. oxidation reduction

29. Match the description with the correct figures below: (extra credit for the correct name if it isn't already given) a. substrate for Complex l b. cytochrome oxidase c. Electrons from both NADH and FADH2 pump 4 protons (per pair of 10 H2N electrons) d. found in cytochromes e. hydrophobic mobile electron carrier f. high similarity to the a-ketoglutarate dehydrogenase complex g. Molecule that can accept 2 electrons from cytosolic NADH h. anon-reducing sugar i. used for energy, nucleic acid synthesis, cofactors O-P-O-P-O-P-O formation of this molecule is the committed step in glycolysi:s OHOH 6CH20H Cyte space le side)Cyte Hemec? OH H ?? Cytc H OH H OH OH2Q Q QH2 Heme b N side) ?? ?? 4 Cyte 4H4e CH3 CHCH3 space (p side) Cys- Heme a CH3 CH3 Cun Heme a N-Fe-N OPO32- CH2 OH CH3 CH2CH2CoO N side) CH3 HO HiC CH2 DPO32- CoA-SH CH3-C-S-CoA CH3-c-c Pyruvate NADH+H FAD Cho Hydroxyethyl FADH2 Oxidized lipoyllysine NAD

Explanation / Answer

Answer-27 (C)

alpha helix has rise per amino acid-1.5 A and 3.6 amino acid/turn

Answer-28 (b)

The carboxyl group of one amino acid reacts with the amino group of the second amino acid, with the release of water (H2O) molecule. This is known as a condensation reaction.

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