Biology 4BI1/1BR May Jun 2019

Edexcel IGCSE Biology (4BI1) Jun 2019

معلم موافق رایگان بودن است.

1. Ecology and Energy Transfer: Identifying secondary consumers in a food web, explaining energy flow in producers, discussing energy loss in trophic levels, and understanding fungal feeding mechanisms.

2. Experimental Biology: Investigating pollution effects on plant growth, plotting growth data, identifying dependent variables, understanding cell division (mitosis), and controlling abiotic factors.

3. Genetics and Inheritance: Understanding polygenic traits, analyzing human height distribution, explaining dominant and recessive inheritance in piebaldism, and distinguishing between genetic and environmental conditions.

4. Human Physiology and Health: Explaining heart disease effects, calculating artery narrowing percentages, discussing respiration impact due to blocked arteries, and understanding the role of bronchodilators.

5. Plant Biology and Photosynthesis: Writing the photosynthesis equation, investigating the need for light and CO₂, testing for starch presence, and controlling experimental variables in plant growth studies.

6. Microbiology and Biotechnology: Understanding the role of bacteria in yogurt production, identifying acids produced, analyzing factors affecting acid production, and explaining enzyme roles in genetic modification.