topic 1 0.0 / 5 ? Biologykey conceptsGCSEEdexcel Created by: bertie321Created on: 16-02-22 15:20 what is a prokaryote they are smaller simpler cells eg: bacteria 1 of 25 what is a eukaryote they are more complex cells eg: animal and plant cells 2 of 25 what does a animal and plant cells have nucleus, cytoplasm, cell membrane, mitochondria and ribosomes 3 of 25 what does only a plant cell have cell wall, vacuole and chloroplasts 4 of 25 what does bacteria have chromosomal DNA, ribosomes, plasmid DNA and a flagellum 5 of 25 what are multicellular organisms contains lots of different types of cells 6 of 25 what are specialised cells a cell that is adapted to their function 7 of 25 what type of cell is a sperm or an egg epithelial cells 8 of 25 what are egg and sperm cells specialised for reproduction 9 of 25 how are egg cells specialised after fertilisation the egg changes structure to not allow any more sperm in 10 of 25 how are sperm cells specialised lots of mitochondria to provide energy 11 of 25 what is cilia used for it is used to move substances 12 of 25 how do you study cells by using microscopes 13 of 25 what is magnification it is how many times bigger the image is 14 of 25 total magnification= eyepiece magnification lens x objective lens magnification 15 of 25 magnification= image size/ actual size 16 of 25 0.0005 in standard form = 5 x 10^-4 17 of 25 what is an enzyme they are natural catalysts 18 of 25 how do enzymes work there is a specific substrate to react with the specific enzymes to catalyse a reaction 19 of 25 what do enzymes needs to work effectively the right temperature, PH and substrate concentration 20 of 25 rate of reaction = 1000/time 21 of 25 what do enzymes break down starch, proteins and lipids 22 of 25 what is diffusion gradual movement of particles from a high to low concentration 23 of 25 what is active transport movement of particles from a low to high concentration 24 of 25 what is osmosis movement of water from a high to low concentration 25 of 25
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