Is it Alive - Observation of Substances on Wet Cotton Wool

Part 3

Table 3

Substance A, B and C (clockwise) after 10 minutes

Substance D after 10 minutes

Substance E after 10 minutes

Substance A, B and C (anti-clockwise) after 24 h

Substance B after 24 h

Substance E after 24 h

Substance A after 36 h

Substance B after 26 h

Substance C after 36 h

Substance D after 36 h

Substance E after 36 h

Is it Alive - Observations of Substances in Glucose

    Part 2

Substance A and B at 0 minutes

Substance C and D at 0 minutes

Substance E at 0 minutes

Substance A, B and C after 10 minutes

Substance D and E after 10 minutes

Is it Alive - Observation of Substances in Water

 Table 1 

1. Label the tube A, B, C, D and E.
2. Carefully transfer 1 spatula full of each of the substances A, B , C, D and E into the respective test tube. 
3. Add 3ml of water to each of the tube. Mix well using the wooden splinter.
4. Start your stopwatch.
5. Observe. Write your observations in table 1. Take readings if you have to.
6. After 10 mins, record the observation again.
7. What is your inference for each of the substance? Is there any evidence of life?

Pictures taken from Park Jiwon at 

Source: http://parkjiwon24106biologyjournal.blogspot.sg/ 

Substances A, B, C, D and E (from left to right) at 0 minutes

Substances A, B, C, D and E (from left to right) at 10 minutes

Is it Alive - Liquids Chosen

Three different types of liquids - water, glucose and salt water are also provided to test the reactions of the substances to these liquids. 

Why were these liquids chosen? 

Water: 

The substances may also breathe. If air bubbles are seen coming out from the water, this proves that the substance might be breathing. If the water level decreases, it also means that the substance is a living thing as it needs water to survive. 

Glucose:

The substance might take in the glucose and reproduce, therefore proving that it is a living thing.

Salt Water: 

The substance may need salt water to survive.

Is it Alive? - Physical Appearances

Physical Appearance of Substance A, B, C, D and E