Edexcel IGCSE Biology 復習筆記 2.7.1 Diffusion in Gas Exchange
Edexcel IGCSE Biology 復習筆記 2.7.1 Diffusion in Gas Exchange Diffusion in Gas Exchange Diffusion is the?movement of molecules?from a region of its?higher?concentration to a region of its?l...
AQA A Level Biology復習筆記7.4.2 Abiotic & Biotic Factors
Abiotic & Biotic Conditions Niche The place where a species lives within an ecosystem is its?habitat The role that a species plays within its habitat is known as its?niche, including: Th...
Edexcel IGCSE Biology 復習筆記 2.6.3 Practical: Investigating Respiration
Edexcel IGCSE Biology 復習筆記 2.6.3 Practical: Investigating Respiration Practical: Investigating Respiration We can investigate the production of carbon dioxide and heat from respiration through ...
AQA A Level Biology復習筆記7.3.8 Investigating the Effects of Random Sampling on Allele Frequencies
Practical Skill: Investigating the Effects of Random Sampling on Allele Frequencies Investigations to mimic the effects of?random sampling?on?allele frequencies?in a population can be devised using...
Edexcel IGCSE Biology 復習筆記 2.6.2 Types of Respiration
Edexcel IGCSE Biology 復習筆記 2.6.2 Types of Respiration Aerobic Respiration Aerobic respiration requires oxygen It is defined as the chemical reaction in cells that uses oxygen to break down nutr...
AQA A Level Biology復習筆記7.3.7 Types of Speciation
Allopatric & Sympatric Speciation Evolution?causes?speciation: the formation of?new species?from pre-existing species over time, as a result of?changes to gene pools?from generation to g...
AQA A Level Biology復習筆記7.3.6 Reproductive Separation
Reproductive Separation Reproductive separation In order for evolution to occur the new species population must be?genetically?and?reproductively separated?from the pre-existing species popu...
AQA A Level Biology復習筆記7.3.5 Evolution
Evolution The?allele frequencies?(within the gene pool) of a population can?change?over time due to processes such as natural selection When the?allele frequencies?of a population change?suf...
AQA A Level Biology復習筆記7.3.4 Types of Selection
Types of Selection & Their Effects Environmental factors that affect the chance of survival of an organism are referred to as?selection pressures For example, there could be high levels ...
Edexcel IGCSE Biology 復習筆記 2.6.1 Energy
Edexcel IGCSE Biology 復習筆記 2.6.1 Energy ATP Organisms need energy for things such as: Chemical reactions?to build larger molecules from smaller molecules Muscle contraction?to allow move...
AQA A Level Biology復習筆記7.3.3 Selective Advantage
Selective Advantage Every individual within a species population has the?potential to reproduce?and have offspring In reality, however, there are many?environmental factors?that?prevent?ever...
AQA A Level Biology復習筆記7.3.2 Natural Selection
Natural Selection Every individual within a species population has the?potential to reproduce?and have offspring which contribute to population growth If all the offspring of every individua...
