Living Organisms

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Across
  1. 3. Your heart, blood and blood vessels, including veins, arteries and capillaries
  2. 5. The chemical in red blood cells in which oxygen binds to be carried from the lungs to the rest of the body.
  3. 10. Body system that includes the brain, spinal cord and nerves.
  4. 12. cells Cells which have a particular adaptation to allow them to complete a specific function
  5. 14. A tough, flexible material found in the nose and ears, but also between bones in your spine, knees and around your trachea.
  6. 15. A chemical reaction that occur in the mitochondria of cells in which glucose and oxygen react to produce carbon dioxide and water, releasing energy
  7. 18. The part of the female reproductive system where a fertilised egg cell develops into an embryo and then a fetus. Also called the womb.
  8. 19. A food group that cannot be broken down in the digestive system . Foods like cereals, pasta, bread, fruits and vegetables are high in fibre.
  9. 22. Structures found in plant cells which have a green pigment called chlorophyll in them. Photosynthesis occurs here.
  10. 26. A fertilised ovum (egg cell) before it has divided into an embryo.
  11. 28. The spongy material inside your large bones like those in your legs and hips, in which other cells are made.
  12. 30. The regions of plants at their root and shoot tips where stem cells divide.
  13. 33. Offspring genetically identical to their parent.
  14. 35. Living organisms which can only be seen with a microscope. Some bacteria cause disease, others are useful
  15. 36. A chemical reaction that occurs in the chloroplasts of plants in which the energy in light is stored in glucose
  16. 37. A strong cord-like tissue which connects bones on either side of joints together.
  17. 39. Another word for 'bump into’.
  18. 40. Muscles get shorter by contracting and return to their original length when they relax. Muscles pull on bones for movement.
  19. 42. Bacteria, fungi and viruses that cause disease.
  20. 43. The overall movement of particles of gas or liquid from an area of higher to lower concentration.
  21. 44. The tiny hairs found on the top of ciliated cells which beat.
  22. 45. A group of the same specialised cells in the same place in the body with the same function.
  23. 46. A strong cord-like tissue which connects muscles to bones
  24. 48. A cell component found in most cells which contains the genetic material (DNA) of the organism and controls the cell’s activities.
Down
  1. 1. The yellow fluid that carries your blood cells, platelets and dissolved substances around your body.
  2. 2. The tissue surrounding the root of a hair.
  3. 3. This surrounds the outside of animal cells and controls what can enter and exit it.
  4. 4. A pair of muscles that act on a joint. As one muscle contracts the other relaxes.
  5. 6. Stem cells found in children and adults that can only differentiate into one or several cell types.
  6. 7. An expert in the scientific study of plants.
  7. 8. Chemical messages produced by glands. They travel in the blood to a target organ where they take effect.
  8. 9. The part of your digestive system in which digested food is absorbed into the blood.
  9. 11. The turning effect of a force.
  10. 13. Tubes in the female reproductive system which join the two ovaries to the uterus. Also called fallopian tubes.
  11. 16. The time that a teenager becomes sexually mature and physically able to have a baby.
  12. 17. The joining of male and female gametes (sperm and ova or eggs).
  13. 20. Stem cells found in embryos that can differentiate into all cell types.
  14. 21. A part of a cell - it surrounds the cell and lets substances in and out
  15. 23. A bundle of several hundred cells that has developed from a fertilised ovum.
  16. 24. Backbones that surround and protect the spinal cord. Plural: vertebrae, singular: vertebra. Vertebrates are animals with a backbone.
  17. 25. Green pigment found within chloroplast that enables the process of photosynthesis to occur.
  18. 27. A sugar produced by plants in photosynthesis and used by all living organisms to release energy during respiration
  19. 28. A measure of the range of living organisms within a habitat.
  20. 29. Tiny parts of cells floating in the cytoplasm where energy is released from glucose. The glucose comes from food.
  21. 30. A scientific instrument used to see tiny objects, such as cells, magnified several hundred times or more
  22. 31. The number of particles of one substance in a specific volume of another substance.
  23. 32. A cell which contains half the number of chromosomes compared to other cells in the organism. Eg gametes.
  24. 34. Part of the body which allows movement including the neck, elbows, hips and knees.
  25. 38. Another word for slope.
  26. 41. The part of your digestive system in which water from food and drink is absorbed into the blood.
  27. 47. Biological molecules called catalysts which speed up reactions.