excretion Flashcards
1
Q
define excretion
A
the removal of metabolic waste from the body
2
Q
what is the process by which amino acids are broken down
A
deamination
3
Q
how does the build up of metabolic products affect the body
A
some metabolic products such as CO2 and ammonia are toxic. they interfere with cell processes by altering the PH
other metabolic products may act as inhibitors and reduce activity of essential enzymes
4
Q
how is most CO2 transported in the blood
A
as hydrogencarbonate ions
5
Q
how are hydrogencarbonate ions formed
A
CO2 +H20->H2CO3
H2CO3->H(positive)+HCO3(negative)
