Biology: Exam-Style Questions (Y9T1)

Question 1

What do plant cell have but animal cells don’t?

Answer 1

Vacuole, Cell Wall, Chloroplast

Question 2

If a cell requires a lot of energy, is more mitochondria needed? Give an example.

Answer 2

Yes, muscle cells are packed full of mitochondria

Question 3

Which part of a mesophyll cell of a leaf is partially permeable?

Answer 3

Cell membrane

Question 4

Which 2 organelles are present in large numbers in cells that produce insulin (protein)?

Answer 4

Ribosomes and mitochondria

Question 5

Which structure would be present in a root hair cell but not a sperm cell?

Answer 5

cell wall

Question 6

GIve 2 similarities and 1 difference between a molecule of starch and a molecule of cellulose

Answer 6

S: both are made out of C,H, O
Made out of manny glucose combined to form
long chains
D: Cellulose forms in straight line, Starch coils into a Spiral shape

Question 7

What must be included in a 6 marks investigation question?

Answer 7

1. Independent Variable (change to get result)
2. Dependent Variable (observe)
3. Control Variable (2)
4. Procedure (brief)
5. Safety Precautions (1)

Question 8

What happens when a plant cell is placed in pure water?

Answer 8

• water enters the cell by osmosis
• as water have higher water potential and will diffuse into a region of lower water potential
• through a partially permeable cell membrane
  -cytoplasm and vacuole will swell and push outwards against cell wall
• cell wall prevents it from bursting
  -turgid