DP Biology (first assessment 2025)

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Question 19N.2.SL.TZ0.a

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Date November 2019 Marks available [Maximum mark: 2] Reference code 19N.2.SL.TZ0.a
Level SL Paper 2 Time zone TZ0
Command term Outline Question number a Adapted from N/A
a.
[Maximum mark: 2]
19N.2.SL.TZ0.a

Outline the cell theory.

[2]

Markscheme

a. cells can only arise from preexisting cells ✔

b. living organisms are composed of cells/smallest unit of life ✔

c. organisms consisting of only one cell carry out all functions of life in that cell/cells perform life functions «at some point in their existence» ✔

d. although most organisms conform to cell theory, there are exceptions ✔