Science_Flashcards_Brainscape
(10 cards)
1
Q
What is the purpose of a quadrat in estimating tea plants in a large area?
A
- Samples a small section
- Count plants in the quadrat
- Multiply to estimate total in the area
2
Q
What does the ‘C’ in CORMMSS stand for in an experiment?
A
Change — the factor you are testing (e.g., leaf position: top vs bottom)
3
Q
What are the 2 ‘M’s in CORMMSS and what could you measure in a leaf greenness experiment?
A
- M1: Chlorophyll (using colorimeter or SPAD meter)
- M2: Height/position of leaf taken
4
Q
What are the elements found in carbohydrates?
A
Carbon (C), Hydrogen (H), Oxygen (O)
5
Q
Is glucose soluble in water?
A
Yes – glucose is water-soluble.
6
Q
Is starch soluble in water?
A
No – starch is insoluble in cold water.
7
Q
What test is used to identify proteins?
A
Biuret test – turns purple if protein is present.
8
Q
Why does an egg gain weight in distilled water?
A
- Water moves into egg by osmosis
- Distilled water is hypotonic
- Egg gains water and weight
9
Q
Name 4 abiotic factors that affect photosynthesis.
A
- Light intensity
- CO₂ concentration
- Temperature
- Water availability
10
Q
Why do lipase and bile not show visible change in oil and water?
A
- Oil and water don’t mix
- Bile emulsifies fat (not visible)
- Lipase breaks fat down chemically
- No obvious visual change
