1. EXPERIENCE AT GENERAL
BIOLOGY I LABORATORY
By Jose A. Cruz Arzon

2. CHEMISTRY OF LIFE

3. SOLUTION PREPARATION
Glucose Stock Solution
Stock solution at different
concentrations

4. DETECTING MACROMOLECULES
Benedict Test: positive to carbohydrates are red,
orange, yellow and green.
Unknown
Glucose
Milk
Coconut
Onion
Juice

5. Biuret Test: positive to proteins are presented in
violet.
Casein
Milk
Coconut
Albumin

6. Lugol Test: postive to starch are presented in
black.
Starch

7. TRANSPORT IN THE CELL
MEMBRANE

8. Inside the cell: glucose and starch. Glucose
stays inside the cell after an hour.

9. Inside the cell: no protein (albumin).
Albumin stays outside the cell after an hour.

10. Inside the cell: Starch. Starch stays inside
the cell after an hour.

11. Outside the cell: no glucose. Glucose
can cross the lipid bilayer

12. Outside the cell: albumin. Albumin stays
outside the cell.

13. Outside the cell: Lugol. Lugol can cross
the lipid bilayer, since it detected the
starch that was inside.

14. ENZYME ACTIVITY

15. Enzyme activity of celobiase at different substrate concentrations

16. PHOTOSYNTHESIS

17. Coleus sp. (plant used)

18. Polar and non-polar pigments extraction from Coleus leaf

19. Chromatography for the separation of
pigments

20. Light dependent and Light independent reaction in Elodea using phenol red.

21. CELLULAR RESPIRATION

22. Measuring respiration rate in a water snail and a goldfish using the
Principle of Tritation

23. Fermentation of yeast in substances like water, corn syrup and sucrose

24. MOLECULAR GENETICS

25. DNA samples for Agarose Gel Electrophoresis

26. Results of my first Agarose Gel
Electrophoresis

27. DNA extraction from a strawberry

28. MENDELIAN GENETICS

29. Corn used to measure the rate of
dominant and recessive alleles

30. P.T.C Paper to see how many students are dominant for bitter flavor
and recessive for tasteless.