Give two reasons why water is important for all living organisms - Leaving Cert Biology - Question 9 - 2016
Question 9
Give two reasons why water is important for all living organisms.
(i) ................................................................................................. show full transcript
Worked Solution & Example Answer:Give two reasons why water is important for all living organisms - Leaving Cert Biology - Question 9 - 2016
Step 1
Give two reasons why water is important for all living organisms.
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
Transport Solvent: Water serves as a crucial transport solvent in biological systems. It facilitates the movement of nutrients, gases, and waste products within organisms, ensuring that metabolic processes occur efficiently.
Temperature Control: Water has a high specific heat capacity, which allows it to stabilize temperatures within organisms. This property is essential for maintaining homeostasis, as it helps regulate the internal conditions, especially in fluctuating external temperatures.
Step 2
For what purpose did you use each of the following in the course of your practical activities?
(i) Anaerobic jar.
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
To provide an environment without oxygen.
Step 3
For what purpose did you use each of the following in the course of your practical activities?
(ii) Backed blade.
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
To avoid injury or to cut thin slices.
Step 4
For what purpose did you use each of the following in the course of your practical activities?
(iii) Sodium alginate.
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
To immobilise enzyme (or yeast).
Step 5
For what purpose did you use each of the following in the course of your practical activities?
(iv) Pooter.
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
To collect small organisms e.g., insects, spiders.
Step 6
For what purpose did you use each of the following in the course of your practical activities?
(v) Freezer-cold ethanol.
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
To precipitate DNA (to make it insoluble or to make it come out of solution).
Step 7
For what purpose did you use each of the following in the course of your practical activities?
(vi) IAA.
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
To cause (or inhibit) root growth or to cause (or inhibit) stem growth.
Step 8
For what purpose did you use each of the following in the course of your practical activities?
(vii) Starch agar or milk agar.
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
To show digestive activity during germination (in seeds).
Step 9
For what purpose did you use each of the following in the course of your practical activities?
(viii) Limewater.
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
To test for carbon dioxide.
Join the Leaving Cert students using SimpleStudy...
