Specimen

Question 1

Describe how water moves from roots into leaves

Answer 1

By transpiration stream in the xylem

Question 2

Explain why having few stomata on upper surface on leaf is an advantage to leaf

Answer 2

Less water lost so plant doesn’t wilt

Question 3

Describe how glucose moves from small intestine into muscle cell

Answer 3

Glucose moves into bloodstream by diffusion. Blood delivers glucose to muscles in capillaries

Question 4

Explain why a person with coeliac disease has poor growth ( damaged villi)

Answer 4

Damaged villi reduces surface area for absorption. Therefore, fewer amino acids and glucose absorbed into bloodstream. Less glucose means fewer amino acids and therefore proteins available for growth