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Download 1 Underline which of these are true about all living things: A they
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Transcript
M Test yourself Cells ? Unit A 1 Underline which of these are true about all living things: A they think B they move C they grow D they chew E they are made of cells 2 Complete the sentences by crossing out the wrong words: T a Magnification means to make a specimen look bigger/smaller. b The magnification of your eyepiece lens is 10. The magnification of your objective lens is 10. The total magnification is 10/100. 3 Label the diagram of the animal cell and plant cell using these words: nucleus cytoplasm cell wall chloroplast cell membrane 4 By drawing lines, match up the features with their function in a cell: Feature Nucleus Cytoplasm Cell wall Chloroplast Vacuole Cell membrane Function chemical reactions happen here makes food using light controls what happens in the cell stops the cell bursting or collapsing controls what goes into and out of the cell stores water, salt and sugar 5 Different cells have different structures to help them carry out different functions. By drawing lines, match the type of cell to its function and then to the feature which helps it carry out its function. Type of cell Sperm cell Egg cell Nerve cell Red blood cell Epithelium cell Root hair cells Function To take in water from the soil To carry as much oxygen as possible To cover the surface of organs To feed developing young To carry messages To swim to egg Feature Flat and in sheets Very long Long tail Long and very thin Large food stores No nucleus Continued ! 369 q I Bradley, C Tear, M Winterbottom, S Young, 2001, The Heinemann Science Scheme M Test yourself Cells continued ? T Unit A 6 Complete the sentences by crossing out the wrong words: a b c d e A tissue is made of lots of cells/organs. An organ is made of lots of tissues/keys. Muscle is a tissue/organ. The heart is a cell/tissue/organ. Xylem is a tissue/organ. 7 New cells are made by cell division. Which part of the cell divides first during cell division? A cytoplasm B nucleus C cell membrane 8 Choose from these words to fill in the gaps in the sentences. You may use the words once, more than once, or not at all. pollen tube style egg cell pollen cell stigma a Pollination happens when a pollen grain lands on the of another plant. b The pollen grain grows a which grows down through the style to the ovary. c The moves down the pollen tube into the ovary. d When fertilisation happens in plants a with an . 370 q I Bradley, C Tear, M Winterbottom, S Young, 2001, The Heinemann Science Scheme joins together