DP Biology (first assessment 2025)

Test builder »

Question 21N.1A.SL.TZ0.25

Select a Test
Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1A.SL.TZ0.25
Level SL Paper 1A Time zone TZ0
Command term Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
21N.1A.SL.TZ0.25

What occurs as a result of a cut in the skin of a finger?

A. Prothrombin is transformed into thrombin.

B. Fibrin is converted to insoluble fibrinogen.

C. Platelets produce antibodies to prevent infection.

D. Clotting factors are released from red blood cells.

[1]

Markscheme

A

Examiners report

A high discrimination index and fewer than 30 % of candidates answering correctly show that only best-prepared candidates had studied this topic carefully enough.

Syllabus sections