9. (a) (i) What is meant by the term digestion?
______________________________________________
(ii) Name a carbohydrate that is stored in a seed - Leaving Cert Biology - Question 9 - 2018
Question 9
9.
(a) (i) What is meant by the term digestion?
______________________________________________
(ii) Name a carbohydrate that is stored in a seed.
___________... show full transcript
Worked Solution & Example Answer:9. (a) (i) What is meant by the term digestion?
______________________________________________
(ii) Name a carbohydrate that is stored in a seed - Leaving Cert Biology - Question 9 - 2018
Step 1
What is meant by the term digestion?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Digestion is the process of breaking down food into smaller, absorbable components.
Step 2
Name a carbohydrate that is stored in a seed.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The carbohydrate that is stored in a seed is starch.
Step 3
Which type of agar did you use in this investigation?
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
I used starch (agar) in this investigation.
Step 4
How did you treat the other batch of seeds (batch B) before using them in the investigation?
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Batch B seeds were boiled.
Step 5
Why was such treatment necessary?
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Boiling was necessary to kill the seeds or to denature enzymes, preventing them from being active during the experiment.
Step 6
Why were they placed cut-face-down on the agar?
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
They were placed cut-face-down on the agar to allow enzymes to diffuse into the agar.
Step 7
Name this solution.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The solution poured over the agar was iodine or biuret.
Step 8
Which substance is shown to be present by the solution named in (v)?
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The substance is starch or protein.
Step 9
Give the results of your investigation.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Untreated seeds = Clear under seeds (Plate A). Treated seeds = Blue-black or violet-purple under seeds (Plate B).
Join the Leaving Cert students using SimpleStudy...
