IGCSE Biology Mock – Set 2 Paper 1-Updated 2026
IGCSE Biology Mock – Set 2 Paper 1 – Updated 2026
Preparing for your CIE IGCSE Biology exam can be daunting, but with the right approach, you can achieve your goals with CIE iGCSE Biology Mock test.
Ace your CIE iGCSE Biology exam! Find exam-style questions, detailed notes, and helpful resources to boost your understanding.
iGCSE Practice Questions, Past Papers, Flashcards and notes available for iGCSE Students at IITian Academy.
▶️ Answer/Explanation
In biological classification, the binomial nomenclature system developed by Carl Linnaeus uses two parts to name every species:
- The First Name: This is the Genus. It is always capitalized and written in italics (or underlined if handwritten).
- The Second Name: This is the Specific Epithet (often referred to simply as the species name). It is always lowercase and also written in italics.
▶️ Answer/Explanation
The correct answer is B.
Identification:
The image displays a transmission electron micrograph (TEM) of an organelle with a distinct double membrane structure. The label \(X\) points to the inner membrane, which is folded inwards to form finger-like projections called cristae. This folded structure is the hallmark characteristic of a mitochondrion. The cristae serve to increase the surface area available for the electron transport chain and ATP synthesis during aerobic respiration.
▶️ Answer/Explanation
The correct answer is D.
Magnification is a measure of how much larger a specimen appears compared to its real size. The general formula for calculating magnification is:
$$ \text{Magnification} = \frac{\text{Image size}}{\text{Actual size}} $$
This can also be written as image size \(\div\) actual size.