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Incorrect IB Biology SL Year 12 June Exam Multiple Choice Question


kiwi97

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Hey guys,

i need your help.

 

Which of the following will contribute to the cell theory?

 

I. Living organisms are composed of cells

II. All cells come from pre-existing cells by mitosis.

III. Cells are the smallest units of life.

 

A.I only

B.II only

C.I and III only

D.I,II and III

 

The markscheme says its D. 

What do you think guys?

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2.1.1 Outline the cell theory.    

The cell theory states that: 

  • All living organisms are composed of cells. Multicellular organisms (example: humans) are composed of many cells while unicellular organisms (example: bacteria) are composed of only one cell. Cells are the basic unit of structure in all organisms. 

  • Cells are the smallest unit of life. They are the smallest structures capable of surviving on their own.

  • Cells come from pre-exsisting cells and cannot be created from non-living material. For example, new cells arise from cell division and a zygote (the very first cell formed when an organism is produced) arises from the fusion of an egg cell and a sperm cell. 

IBQuestionBanks answer is C. :) 

Edited by a_djoko
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