BMAT SECTION 2 BIOLOGY PRACTICE QUESTIONS AND ANSWERS

What is the structure and function of the cell membrane? -phospholipid bilayer -it regulates the transport of substances in and out of the cell What is the structure and function of the cytoplasm? -contains enzymes responsible for breaking down waste and aid in metabolic activities. -responsible for giving the cell it's shape What is the structure and function of the nuclues? -contains cell's DNA -controls its growth and reproduction What is the structure and function of the mitochondrion? -powerhouse of the cell What is the structure and function of the cell wall? -provides structure, support and protection for the cell What is the structure and function of the chloroplast? -contains chlorophyll for photosynthesis What is the structure and function of the vacuole? -storage, protection and growth What is the level of organisation? cells, tissue, organ, organ system, and the organism What is diffusion? The movement of particles from an area of high concentration to an area of low concentration. What is osmosis? Diffusion of water through a selectively permeable membrane What is active transport? the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy. What is mitosis? cell division that produces diploid cells What are the stages of mitosis? prophase, metaphase, anaphase, telophase What is interphase? when the cell grows and DNA is copied