Practice D - Continuity and Change with authentic IB Biology exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like cell biology, genetics, and ecology. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
Paper
Level
Question 1
SLPaper 1A
What is the role of meiosis in sexual reproduction?
Question 2
SLPaper 1A
What happens to animal cells in a hypotonic solution?
Question 3
SLPaper 1A
In osmosis, water moves:
Question 4
SLPaper 1A
Mutations are considered random even when mutagens are present. Which of the following explains why?
Question 5
SLPaper 1A
What is the end product of translation?
Question 6
SLPaper 1A
A cell in prophase would show which of the following features?
Question 7
HLPaper 1A
The Punnett square shown represents a cross between a red-flowered plant (RR) and a white-flowered plant (rr), producing all heterozygous offspring (Rr) with pink flowers.
If one of these pink-flowered (Rr) offspring is self-pollinated, what would be the expected phenotypes of the second-generation (F2) offspring and in what proportion?
Question 8
SLPaper 1A
Which inheritance pattern best describes a trait that is only expressed in males, despite females carrying the allele?
Question 9
HLPaper 1A
What human action could have an impact on the whole biosphere?