AQA GCSE (HIGHER) B2 - Cells, Tissues and Organs 4.0 / 5 based on 1 rating ? BiologyCells, tissues and organsGCSEAQA Created by: Saphire AmselCreated on: 04-05-13 14:10 Plant and animal cells both have: a nucleus, cyptoplasm, a cell membrane, mitochondria, ribosomes 1 of 41 Animal and algal cells have: a cell wall, chloroplasts, a permanent vacuole 2 of 41 What does the nucleus do? It controles the cell's activities. 3 of 41 What happens in cytoplasm? Chemical reations take place. 4 of 41 What does the cell membrane do? Controles the movement of substances in and out of a cell 5 of 41 What does the mitochondria do? It releases energy from aerobic respiration. 6 of 41 What happens in the ribosomes? Protein synthesis. 7 of 41 What does the cell wall contain and do? It contains cellulose for support. 8 of 41 What do chloroplasts do and contain? They contain chlorophyll for photosynthesis, they absorb light energy to make food 9 of 41 What does the permanent vacuole contain? Cell Sap. 10 of 41 How are Bacterial Colonies formed? By multiplying bacteria. 11 of 41 Which contains genetic material instead of a nucleus the yeast or the bacteria cell? The bacteria cell. 12 of 41 If a specialised cell needs a lot of energy what will it need? Give some examples of a cell it could be. It will need lots of mitochondria. e.g a muscle cell, a sperm cell 13 of 41 Why might a gland cell need lots of ribosomes? To create protein to produce enzymes. 14 of 41 Why might a sperm cell need a tail? To move to the egg cell. 15 of 41 Why might a root hair cell have a big surface area? To absorb water and minerals from the soil. 16 of 41 Why do red blood cells not have a nucleus? So there is more space for haemoglobin to absorb oxygen. 17 of 41 Why do sperm cells have an enzyme in the head? To break through the ovuum. 18 of 41 Give a definition of diffusion. the spreading out of particals in a gas or substance in a solution from high to low concentration. 19 of 41 What is the concentration gradient? The differance between two areas in concentration. 20 of 41 The larger the difference in concentration... the faster the rate of diffusion. 21 of 41 What does the mitochondria do? It releases energy from aerobic respiration. 22 of 41 What happens in the ribosomes? Protein synthesis. 23 of 41 What does the cell wall contain and do? It contains cellulose for support. 24 of 41 What do chloroplasts do and contain? They contain chlorophyll for photosynthesis, they absorb light energy to make food 25 of 41 What does the permanent vacuole contain? Cell Sap. 26 of 41 How are Bacterial Colonies formed? By multiplying bacteria. 27 of 41 Which contains genetic material instead of a nucleus the yeast or the bacteria cell? The bacteria cell. 28 of 41 If a specialised cell needs a lot of energy what will it need? Give some examples of a cell it could be. It will need lots of mitochondria. e.g a muscle cell, a sperm cell 29 of 41 Why might a gland cell need lots of ribosomes? To create protein to produce enzymes. 30 of 41 Why might a sperm cell need a tail? To move to the egg cell. 31 of 41 Why might a root hair cell have a big surface area? To absorb water and minerals from the soil. 32 of 41 Why do red blood cells not have a nucleus? So there is more space for haemoglobin to absorb oxygen. 33 of 41 Why do sperm cells have an enzyme in the head? To break through the ovuum. 34 of 41 Give a definition of diffusion. the spreading out of particals in a gas or substance in a solution from high to low concentration. 35 of 41 What is the concentration gradient? The differance between two areas in concentration. 36 of 41 The larger the difference in concentration... the faster the rate of diffusion. 37 of 41 Give an example of diffusion in the body. The diffusion of oxygen in bloodstream to body cells 38 of 41 During the development of multiellular organisms the cells do what? Differentiate to do different functions. 39 of 41 What is a tissue? A group of cells with a simular structure/ function. 40 of 41 Give two examples of body tissues and what they do? muscle tissue- can contract to bring about movement. 41 of 41
Comments
No comments have yet been made