18:3 omega-3 is an essential fatty acid O True O False

1. Below are two isomers of mannose. Classify this sugar based on sugar number. Is this sugar an aldose or a ketose? Indicate which sugar is in the D conformation and which is in the L confirmation. Are these sugars enantiomers or diastereomers? H но-н НО- -Н Н- -ОН Н -ОН CH2OH Н- ІІ НО НО I OH -ОН Н– -Н CH₂OH =1

aavail po ulit ako pagkanov 17 sir

identify both L-amino acids

1. The figure below shows the Fischer projection of an L-aldohexose. T or F O. НО H- Но H- Но- ČH2OH Naturally occurring saturated long-chain fatty acids are usually in trans- configuration. 2. T or F 3. N-acetylglucosamine is commonly found in glycosaminoglycans. T or F 4. The isoelectric point of isoleucine is lower than that of histidine. T or F 5.. At pH 7, all amino acids stop migrating in isoelectric focusing. T or F 6. The following amino acid is a L-valine. T or F СООН H-NH2 CH-CH3 CH3 7. Salting out is a process to remove salts from proteins. T or F 8. There are five carbons in a pyranose ring. T or F 9. Hydrophobic interaction can be found in protein and DNA. T or F RNA is a polymer consisting of nucleosides joined together by phosphodiester bonds. 10. T or F 11. There are 3.6 base pairs in one turn of DNA helix. T or F

The Nitrogen atom participating in a glycosidic bond in inosinate is donated by glutamine Glycine N5-formimino THF Aspartate O Carbamoyl phosphate Ammonia

Options are equatorial or axial.

Give explanation

Y,G,I,F,L,Y  what is the biochemical propities of this residues.

What are the glycosidic linkages of the trisaccharide shown?     α1→6, α1→6     α1→6, β1→6     α1→6, β1→5     α1→6, α1→5