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CIE AS LEVEL Biology: Infectious disease Questions with Complete Solutions.
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7

mei 2026

2025/2026

A+
What is a disease - Answer A disease is an illness or disorder of the body or mind that leads to poor health.Each disease is associated with a set of signs and symptoms What is an infectious disease - Answer Infectious diseases are caused by pathogens and are transmissible (can be spread between individuals within a population) e.g cholera, malaria, HIV/AIDS and tuberculosis What are non infectious diseases - Answer They are diseases that aren't caused by a pathogen an...
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CIE a level biology-Genetic Technology Study Guide Questions with Actual Answers 2025-2026 Updated.
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11

mei 2026

2025/2026

A+
What is the genetic code - Answer The genetic code is universal, its used by all organisms. What are somatic cells? - Answer They're body cells and they have 46 chromosomes (23 pairs) How many chromosomes do gametes have - Answer 23 chromosomes What is recombinant DNA? - Answer The altered DNA formed when nucleotides from different sources are lengthened What is a transgenic organism? - Answer An organism that contains nucleotide sequences from a diff...
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CIE A Level Biology: Homeostasis Test Questions and All Correct Answers.
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13

mei 2026

2025/2026

A+
Homeostasis - Answer Homeostasis is the regulation of the internal conditions of a cell or organism to maintain optimum conditions for function, in response to internal and external changes. Why is homeostasis important - Answer Homeostasis is critically important for organisms as it ensures the maintenance of optimal conditions for enzyme action and cell function What sensory cells do - Answer Sensory cells can detect information about the conditions inside and outside o...
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CIE A level Biology - Energy and respiration Study Guide
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3

mei 2026

2025/2026

A+
Features of ATP that make it suitable as the universal energy currency - Answer -Small and water soluble so is easily transported around the cell -releases small manageable quantities of energy -easily hydrolysed (only requires one bond to break) The need for energy in living organisms - Answer -Anabolic reactions : protein synthesis form amino acids -Active transport -Muscle contraction -Maintenance of body temperature in endotherms Synthesis of ATP - Answer -Oxid...
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CIE A Level Biology: Classification, Biodiversity and Conservation Latest Exam and All Correct Answers 2025-2026 Updated.
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18

mei 2026

2025/2026

A+
What are species - Answer A group of organisms with similar morphological and physiological features that able to breed together and produce fertile offspring Morphological species concept - Answer In the past, most scientists described organisms by their physical features (morphology) as these can be more easily observed, They group together organisms that share many physical features that distinguish them from other species, This is the morphological species concept Ecologica...
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