Question 1
RESPIRATION
Objectives:
In this experiment you will determine the respiration rates of sprout
Materials:
1\. long sprout
2\. scalled plastic straw
3\. plasticin
4\. reaction tubes
5\. Tissue/filter paper
6\. short sprout
7\. timer
8\. KOH
9\. dye solution
Procedures:
1\. Prepared 2 tubes and give label to the tubes (A and B)
2\. Put 14 long sprout in tube A and 18 short spout in tube B
3\. Covered the tube with plasticin and straw (Arranged the equipment as seen in the
picture above).
KOH Plasticin
Sprout Scalled straw
(filled with dye solution)
4\. Observe how far dye solution move in every two minutes for 5 times.
5\. Put your result on the table
6\. Assume that 1 scale is 1 ml of oxygen consumed, calculate the respiration rates of
long sprout and short sprout in each minutes.
Table 1. Respiration rates in two different sprouts
| Time (per 2 mins) | Volume O₂ (ml): Sprout A | Volume O₂ (ml): Sprout B |
| --- | --- | --- |
| I | | |
| II | | |
| III | | |
| IV | | |
| V | | |
| Respiration rates | … ml/min | … ml/min |
Answer the following Questions:
1\. Which sprout has a higher respiration rates?
2\. Explain why the respiration of sprout A and sprout B is different?
3\. Change the table of your data into the graph. Respiration rates on the horizontal axis and
time in the vertical axis.
4\. Write down the conclusion of the experiment
Objectives:
In this experiment you will determine the respiration rates of sprout
Materials:
1\. long sprout
2\. scalled plastic straw
3\. plasticin
4\. reaction tubes
5\. Tissue/filter paper
6\. short sprout
7\. timer
8\. KOH
9\. dye solution
Procedures:
1\. Prepared 2 tubes and give label to the tubes (A and B)
2\. Put 14 long sprout in tube A and 18 short spout in tube B
3\. Covered the tube with plasticin and straw (Arranged the equipment as seen in the
picture above).
KOH Plasticin
Sprout Scalled straw
(filled with dye solution)
4\. Observe how far dye solution move in every two minutes for 5 times.
5\. Put your result on the table
6\. Assume that 1 scale is 1 ml of oxygen consumed, calculate the respiration rates of
long sprout and short sprout in each minutes.
Table 1. Respiration rates in two different sprouts
| Time (per 2 mins) | Volume O₂ (ml): Sprout A | Volume O₂ (ml): Sprout B |
| --- | --- | --- |
| I | | |
| II | | |
| III | | |
| IV | | |
| V | | |
| Respiration rates | … ml/min | … ml/min |
Answer the following Questions:
1\. Which sprout has a higher respiration rates?
2\. Explain why the respiration of sprout A and sprout B is different?
3\. Change the table of your data into the graph. Respiration rates on the horizontal axis and
time in the vertical axis.
4\. Write down the conclusion of the experiment