Biology igcse edexcel - Study guides, Class notes & Summaries

What are the characteristics of living things? - AnsMove, respire, sensitivity, grow, respire, excrete, nutrition, control Describe eukaryotic cells Example - AnsComplex large cell Contain Nucleus Any mammal/insect cell Describe prokaryotic cells Example - AnsSmall simple cell No nucleus Floating DNA Amoeba/Chlorella Animal cell: Structure Carbohydrate store Example - AnsMulticellular Contain: No cell wall Store carbs as Glycogen Any mammal/insect Plant cell: Structure Carb...

iGCSE Biology Pearson Edexcel Quick Fire Revision Questions and Answers

iGCSE Biology Pearson Edexcel Topic 2 Structure and Function of Living Organisms Complete Notes

Active Transport - correct answer When a substance moves against/up a concentration gradient, from a region where they are of lower concentration to a region where they are of higher concentration. Adaption - correct answer Any characteristic of an organism that improves its chances of surviving in its environment. Aerobic respiration - correct answer ...

pituitary gland - correct answer a gland located at the base of the brain. It secretes a number of different hormones into the blood, including those that regulate reproduction. hypothalamus - correct answer A region of the brain that coordinates the activity of the pituitary gland pancreas - correct answer the organ that helps control blood sugar by ...

Investigate food samples for the presence of glucose - correct answer - add benedict's solution and sample of food to a test tube - heat in 60-70 degree water for 5 minutes - observe colour GLUCOSE = orange / brick red NO GLUCOSE = blue Investigate food samples for the presence of starch - correct answer - add a few drops of iodine solution to the sample STARCH = blue/black NO STARCH = bro...

iGCSE Biology Pearson Edexcel Topic 5 Biological Resources (excluding genetic modification) Complete Notes

Pathogens - Ans (an organism that) causes disease Describe how a non-resistant Staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin (3) - Ans1. mutation; 2. (involves) gene / DNA / allele / genetic material 3. random / chance / rare/spontaneous Explain how a vaccination will protect a human from having an infection. - Ans1. antigen OR dead/weakened / attenuated/inactive pathogen bacterium/virus; 2. memory cells/memory lymphocytes; 3. antibody; 4. ...

iGCSE Biology Pearson Edexcel Topic 4 Ecology and the Environment Complete Notes