IB DP Biology Mock Exam SL Paper 1A Set 3 - 2025 Syllabus
IB DP Biology Mock Exam SL Paper 1A Set 3
Prepare for the IB DP Biology Exam with our comprehensive IB DP Biology Exam Mock Exam SL Paper 1A Set 3. Test your knowledge and understanding of key concepts with challenging questions covering all essential topics. Identify areas for improvement and boost your confidence for the real exam
▶️ Answer/Explanation
Label A points to a glycoprotein with an attached carbohydrate chain. These carbohydrate side groups act as identification markers on the cell surface and are essential for cell recognition and communication. Therefore, the structure that enables recognition between cells is A.
✅ Answer: (A)
▶️ Answer/Explanation
This separation of sister chromatids is characteristic of anaphase, when spindle fibers shorten and move the chromatids apart.
✅ Answer: (D) Anaphase
▶️ Answer/Explanation
In the pedigree, two unaffected parents produce an affected offspring. This situation is only possible if both parents are carriers of a recessive allele. Additionally, both males and females appear unaffected/affected in a pattern consistent with a non-sex-linked trait. Therefore, the most likely inheritance pattern is autosomal recessive.
✅ Answer: (C)