digestion

Question 1

how are amino acids/glucose absorbed into blood

Answer 1

by contrasnport
Na+ actively transported from ileum into blood
maintains diffusion gradient for na+ to diffuse into cell with glucose/amino acids
glucose/amino acid enter blood by facilitated diffusion

Question 2

how are lipids aborbed?

Answer 2

In presence of bile salts monoglycerises and fatty acids forms—micelle
Reaches epithelial cell membrane-micelle releases fatty acids + monoglycerides
they are lipid soluble and can diffuse across into epithelial cell

Question 3

how are lipids processed?

Answer 3

In epithelial cell Triglycerides reformed in ER (from MG and FA)
In golgi proteins are added to TG to form lipoproteins
Lipoproteins are packaged into vesicles for exocytosis into blood

Question 4

what is the role of endopeptideases

Answer 4

hydrolyse internal peptide bonds, breaking peptides into shorter chains

Question 5

what is the role of exopeptideases

Answer 5

Remove terminal amino acids, by hydrolysing the bonds at the ends