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
SLPaper 1A
In Mirabilis jalapa, red flowers (RR) crossed with white (WW) produce pink (RW) offspring. Which best explains why not all RW plants are the same shade of pink?
Question 10
SLPaper 1A
Which statement describes why DNA must replicate before mitosis or meiosis?