An experiment was carried out as follows: -2cm³of egg white suspension was placed in each test tubes labelled A,B,C and D. -Three drops of hydrochloric acid(HCI)was added...

      

An experiment was carried out as follows:
-2cm³of egg white suspension was placed in each of the test tubes labelled A,B,C and D.
-Three drops of hydrochloric acid (HCI) was added to each of test tubes labelled B,C and D.
-1cm³pepsin was added to each of test tubes labelled A, and C 1cm³ boiled pepsin to test tube labelled D.
All the test tubes were placed in a water bath at 35°C for 15 minutes.
(a)State the observations made in each of the test tubes labelled A,B,C and D.
(b)Account for the observations made in(a) above for test tubes labelled A,B,C and D.
(c)What was the role of HCI?

  

Answers


Seline
(a)A Test-tube cloudy.
B Test -tube cloudy.
C Test-tube clear.
D Test- tube cloudy.

(b)A-Medium not acidic/Not suitable medium for action of pepsin on protein.
B-No enzyme to act on protein.
C-Pepsin converted egg protein to peptides/amino acids,medium acidic.
D-Enzyme has been denatured by boiling.
(c)It provides an acidic medium for enzyme pepsin to act on the protein.

Belan answered the question on March 2, 2019 at 12:25


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