Biology 4BI1/1BR May Jun 2022

Edexcel IGCSE Biology (4BI1) Jun 2022

معلم موافق رایگان بودن است.

1. Cell Biology and Microorganisms: Identifying structures in plant root cells, comparing yeast and human cells, functions of plasmids in genetic modification, and enzymes used in recombinant DNA technology.

2. Genetics and Evolution: Investigating inheritance patterns using pedigree charts, calculating probability of genetic traits, analyzing polygenic variation in height, and explaining natural selection in high-altitude animals.

3. Human Physiology and Health: Function of the thorax in breathing, impact of exercise on ventilation, capillary regulation of body temperature, and designing an experiment to test sweating response to warm drinks.

4. Ecology and Environment: Analyzing a North American food web, effects of wolf extinction and reintroduction, calculating percentage changes in population, and methods for determining plant population sizes.

5. Plant Growth and Nutrition: Investigating the effect of fertilizers on seedlings, plotting dry mass growth graphs, role of magnesium and nitrate in plant health, and measuring seed germination response.

6. Comparative Biology and Adaptations: Differences in fish and human red blood cells, oxygen transport efficiency, adaptations of llamas to high-altitude living, and the role of hemoglobin in oxygen absorption.