BTEC LEVEL 2 APPLIED SCIENCE - EXAMINED UNIT BIOLOGY REVISION - CELLS, TISSUES AND ORGANS, Exams of Advanced Education

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BTEC LEVEL 2 APPLIED SCIENCE - EXAMINED

UNIT BIOLOGY REVISION - CELLS, TISSUES

AND ORGANS EXAM

Give the function of the nucleus in the cell - --contains genetic information that controls the activities of the cell Give the function of the cytoplasm in the cell - --where most chemical reactions take place Give the function of the cell membrane in the cell - --allows entry and exit of substances Give the function of the chloroplasts in the plant cell - --the sites of photosynthesis Give the function of the cell wall in the plant cell - --provides structural support Give the function of the vacuole in the plant cell - --contains cell sap and provides extra support for the cell Give the function of the mitochondria in the cell - --the sites of respiration List the cell structures found in a plant cell but not found in an animal cell - -- Cell wall, vacuole and chloroplasts Give the adaptations and function of the egg cell - --Half chromosome number, larger lots of nutrients for growth of zygote, sexual reproduction

Give the adaptations and function of the red blood cell - --No nucleus to make more room for haemoglobin to carry more oxygen around the body. Biconcave shape to increase uptake of oxygen at the lungs Give the adaptations and function of the white blood - --Contain enzymes to breakdown pathogens when white blood cell engulfs it. Give the adaptations and function of the xylem and phloem cells - --Hollow tubes, no cellular structures and strong cell walls to allow them to transport water and sugars. Give the adaptations and function of the root hair cell - --Long projection to increase surface area to absorb more water and mineral ions. Give the adaptations and function of the guard cell - --Water enters and exits these cells to open and close stomata. Give the adaptations and function of the sperm cell - --Half chromosome number, tail to swim to egg during sexual reproduction Define term tissue and give an example - --Cells working together i.e. muscles Define term organ and give an example - --tissues working together i.e. artery Give an example of an organ system - --cardiovascular system Give function of plant roots - --take in water from the soil and provide anchorage

Give function of plant xylem - --carries water and mineral ions Give function of plant phloem - --carries glucose Give function of plant leaf - --photosynthesis takes place What is transpiration - --Movement of water from roots up the xylem driven by loss of water vapour from the leaves