2: CELLS - DIFFERENTIATION

Question 1

What is a zygote?

Answer 1

a single cell

Question 2

How does differentiation occur?

Answer 2

• genes which are switched on will then form proteins which will shape how the cell looks and determine the cell’s function
• this leads to differentiation

Question 3

What are some examples of specialised cells?

Answer 3

• muscle cells
• nerve cells
• sperm cells
• root hair cells
• xylem cells
• phloem cells
• neutrophil
• erythrocyte

Question 4

What are neutrophil?

Answer 4

cells that perform phagocytosis

Question 5

What are the adaptations of neutrophil?

Answer 5

many lysosomes to secrete digestive enzymes used in phagocytosis

Question 6

What is an erythrocyte?

Answer 6

a red blood cell

Question 7

What are the adaptations of an erythrocyte?

Answer 7

• biconcave
• no nucleus
• haemoglobin