Structures and Functions in Living Organisms 0.0 / 5 ? BiologySection 1: Revision GuideIGCSEEdexcel Created by: katy_d_3Created on: 12-03-14 19:32 What are the 8 basic characteristics that all living organisms share? Nutrition, Respire, Excrete their waste, respond to their surroundings, move, control internal conditions, reproduce, grow and develop 1 of 19 Name the three organelles that are found in both animal and plant cells Nucleus, Cell membrane, Cytoplasm 2 of 19 Name three organelles that are only found in a plant cell chloroplasts, cell wall, vacuole 3 of 19 What is a tissue? A tissue is a group of similar cells that work together to carry out a particular function. 4 of 19 What is an organ? An organ is a group of different tissues that work together to perform a function. 5 of 19 What is an organ system? Organs work together to form organ systems. Each system does a different job. 6 of 19 What are plant cell walls made of? Cellulose. 7 of 19 How do plants store carbohydrates? As sucrose or starch 8 of 19 By having chloroplasts, what are plants able to do? Photosynthesis. 9 of 19 How do animals store carbohydrates? Glycogen 10 of 19 Give two examples of fungi Yeast and Mucor 11 of 19 What is saprotrophic nutrition? They secret extracellular enzymes into the area outside their body to dissolve their food, so they can then absorb the nutrients. 12 of 19 Give two examples of protoctists Chlorella and Amoeba 13 of 19 Give three features of viruses They have a protein coat around some genetic material. They have DNA or RNA 14 of 19 What are pathogens? Pathogens are organisms that cause disease. 15 of 19 Name two pathogens. Plasmodium and Pneumococcus 16 of 19 What is the name given to biological catalysts? Enzymes 17 of 19 What is a catalyst A catalyst is a substance which increases the speed of a reaction without being changed or used up in the reaction. 18 of 19 What happens if the enzyme is heated past it's optimum temperature? Some of the bonds holding the enzyme together will break. It will lose it's shape and will therefore not be able to function. The enzyme is denatured. 19 of 19
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