Practice IB Biology Topic 1.4 Membrane Transport with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for 1.4 Membrane Transport and mirrors Paper 1A, 1B, 2 style where relevant.
Get instant solutions, detailed explanations, and build confidence with questions aligned to IB examiner expectations.
Which of the following characteristics found in a structure necessarily indicates that it is alive?
The data below shows the concentrations of three ions in a frog.
| Ion | Concentration / mmol dm | |
|---|---|---|
| Extracellular fluid | Cytoplasm | |
| 110.0 | 13.0 | |
| 138.0 | 2.5 | |
| 3.0 | 90.0 |
What best explains the distribution of ions?
What can the extracellular matrix of cells be made of?
I. Polysaccharide II. Glycoprotein III. Phospholipid
Describe the genetic code and its relationship to polypeptides and proteins.
Outline the role of proteins in active and passive transport of molecules through membranes.
Many cell functions, like synthesis of macromolecules and transport, require energy in the form of ATP. Explain how ATP is generated in animal cells.
The diagram is a model of one type of movement across a membrane.
[Source: CAMPBELL, NEIL A.; REECE, JANE B., BIOLOGY, 7th, ©2005, p. 134. Reprinted by permission of Pearson Education, Inc., New York, New York.]
What is this type of movement?