Biology: 2

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Created by
Japhne Lee

Cards (25)

  • An animal cell consists of:
    1. Cytoplasm
    2. Nucleus
    3. Vacuole
    4. Ribosome
    5. Cell membrane
    6. Mitochondrion
    7. Chromosome
    8. Nuclear membrane
  • The cytoplasm is where most cell activity takes place in a cell
  • The nucleus controls cell activity and is needed for cell division
  • Chromosome is genetic material found inside nucleus
  • Nuclear membrane surrounds the nucleus
  • Ribosomes are attached to membrane of the endoplasmic reticulum or lie free in the cytoplasm
  • Cell membranes are partially permeable
  • The mitochondrion is the site of aerobic respiration and is the site of most of the energy production in the cell
  • Chloroplasts are green pigments that contain chlorophyll which captures sunlight energy to break water molecules
  • Bacteria cells have:
    1. Circular DNA
    2. Plasmids which contain genetic information
    3. Flagellum to swim
  • The 6 specialised cells:
    1. Nerve cell (neurone)
    2. Palisade mesophyll cell
    3. Root hair cell
    4. Egg and Sperm cells
    5. Red blood cell
    6. Ciliated cell
  • The nerve cell has a: nucleus and myelin sheath (nerve fibre); for the transmission of electrical impulses (thoughts)
  • The palisade mesophyll is an elongated cell which contains the most chloroplasts and is where photosynthesis takes place
  • The more surface are a root hair cell has, the more it absorbs water and minerals
  • The egg cell is coated in a jelly coat which hardens immediately after 1 sperm cell enters
  • The sperm cell has mitochondria as it needs a lot of energy to swim
  • The red blood cell is the only cell without a nucleus
  • The red blood cell is concave, giving it more surface area to carry more oxygen
  • Haemoglobin makes the red blood cell red
  • The ciliated cell is found in the trachea, bronchi, and oviduct
  • The ciliated cell helps the movement of mucus and eggs
  • Tissues are groups of cells with similar structures
  • Organs are more than 1 kind of tissue working together to do 1 thing
  • Organ systems contains several organs working for 1 common purpose
  • Organisms are various organ systems working together