Chapter 10 Essay_e

bio

  Biology: Chapter 10 Nutrition in humansCombined Science: Chapter 8 Nutrition in humansEssays ________________________________________________________________________________________  Essays Biology:Chapter 10Nutrition in humansCombinedScience:Chapter 8Nutrition in humans |!|EEB01008001|!| #rite an essay on the $ollo%ing topic&'ipids are digested and absorbed and become part o$ human $at in a person& (escribe the processes thatchange the dietary lipids into human $ats&)1 mar*s+,, Content  )ma-imum .  mar*s+ ContentsDescriptorsMarks 1& (igestion  － /n duodenum bile and pancreatic uice help the digestion o$ lipids& － Bile %hich is secreted by the li2er contains bile salts& － 'ipids are emulsi$ied into smaller droplets by bile salts& － 3ancreatic uice secreted by the pancreas contains pancreatic lipase& － Smaller droplets are digested by pancreatic lipase into $atty acids and glycerol& － (igestion o$ $ats is under al*aline condition&)4a-& 5 mar*s+& 6bsorption  － 7atty acids and glycerol molecules pass through the epithelium o$ the 2illi by di$$usion － and recombine to $orm lipid molecules － %hich enter the lacteal － and are carried a%ay by the lymph&)4a-& 5 mar*s+5& 6ssimilation  － 6$ter entering the lacteal lipid molecules are carried by the lymph through the lymph 2essels& － hey e2entually drain into the bloodstream near the heart )into subcla2ian 2ein+& － he lipid molecules are carried by the bloodstream to di$$erent parts o$ the body － %here they di$$use into the tissue $luid and － are ta*en up by cells $or building up body substances )cell membrane+ － releasing energy － stored as adipose tissues around internal organs or subcutaneous $at under s*in or  ________________________________________________________________________________________ 9(SE Biology ; a modern approach< 00. 6risto Educational 3ress 'td&  Biology: Chapter 10 Nutrition in humansCombined Science: Chapter 8 Nutrition in humansEssays ________________________________________________________________________________________  － help transport and store $at soluble 2itamins&)4a-& 5 mar*s+ Communication  )ma-imum 5 mar*s+ Marks awardedClarity of expressionLogical and systemic presentation 5Easy to understand $luent good command o$ language#ell structured sho%ing coherence o$ thought and organisation o$ ideas'anguage used is understandable some inappropriate use o$ %ords4ost ans%ers are organised some repetitions o$ ideas14ar*ers ha2e to spend some time and e$$ort to understand6ns%ers are a bit disorganised but  paragraphing is e2ident repetitions are  prominent0'anguage used is incomprehensible=ust paragraphs sho%n ideas are not coherent and systematic& 6ns%ers are chaotic sho%ing no attempt to organise thoughts  _________  )1 mar*s+,,|!|EEB0100800|!| #rite an essay on the $ollo%ing topic& ne o$ the $unctions o$ the li2er is storage& (escribe the $ood substances stored there&)1 mar*s+,, Content  )ma-imum .  mar*s+ ContentsDescriptionsMarks 7ood substances stored by li2er  － >lycogen － /ron － 7at soluble 2itamins )2itamins 6 ( and +)4a-&  mar*s+>lycogen  － carbohydrate that is $or storage － $ormed $rom the e-cess glucose in the blood by the li2er  －  bro*en do%n to $orm glucose i$ blood glucose le2el is lo%&)4a-& 5 mar*s+/ron  － mineral needed $or producing haemoglobin － de$iciency disease: anaemia ________________________________________________________________________________________ 9(SE Biology ; a modern approach< 00. 6risto Educational 3ress 'td&  Biology: Chapter 10 Nutrition in humansCombined Science: Chapter 8 Nutrition in humansEssays ________________________________________________________________________________________ ?itamin 6  － $at@soluble 2itamin － needed $or the $ormation o$ a 2isual pigment )2isual purple+ in retina －  protects the cornea － necessary $or healthy epithelial tissues in alimentary canal and respiratory system － de$iciency disease: night blindness)4a-& A mar*s+?itamin (  － $at@soluble 2itamin －  produced in the s*in %hen e-posed to sunlight － helps the absorption o$ calcium and phosphorus ions － important $or $ormation o$ healthy bones and teeth － de$iciency disease: ric*ets in children osteoporosis in adults ?itamin    － $at@soluble 2itamin － essential $or blood clotting － de$iciency disease: poor blood clotting Communication  )ma-imum 5 mar*s+ Marks awardedClarity of expressionLogical and systemic presentation 5Easy to understand $luent good command o$ language#ell structured sho%ing coherence o$ thought and organisation o$ ideas'anguage used is understandable some inappropriate use o$ %ords4ost ans%ers are organised some repetitions o$ ideas14ar*ers ha2e to spend some time and e$$ort to understand6ns%ers are a bit disorganised but  paragraphing is e2ident repetitions are  prominent0'anguage used is incomprehensible=ust paragraphs sho%n ideas are not coherent and systematic& 6ns%ers are chaotic sho%ing no attempt to organise thoughts  _________  )1 mar*s+,, ________________________________________________________________________________________ 9(SE Biology ; a modern approach< 00. 6risto Educational 3ress 'td&