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6. how many amino acids make a protein?

  • 40
  • 30
  • 20
  • 10

7. what are long sugar chains called?

  • polysaccarides
  • monosaccarides
  • diasaccarides

8. what is an isotope?

  • same number of protons, different number of neutrons
  • same number of neutrons, different number of protons

9. what are two sugars called?

  • diasaccarides
  • polysaccarides
  • monosaccarides

10. an element is..

  • a chemical substance, all atoms are the same type
  • smallest part of an element and can exist as a stable entity

11. what are amino acids?

  • carbon, oxygen, sulphur, nitrogen and enzymes
  • carbon, hydrogen, oxygen, nitrogen and sulphur
  • carbon, hydrogen, oxygen, water and sulphur

12. what are lipids?

  • carbon, h2o, proteins
  • carbon, hydrogen, oxygen
  • carbon, oxygen, phosphates

13. what are carbohydrates (sugars) made of

  • carbon, oxygen and hydrogen
  • carbon, starch and glucose
  • carbon, water and hydrogen

14. protons..

  • no electrical charge
  • 1 unit negative charge
  • 1 unit of positive charge, 1 atomic mass unit
  • 1 unit of positive charge, 0 atomic mass unit

15. what are nucleic acids made from?

  • proteins and amino acids
  • nucleotides
  • amino acids and carbon ions

16. when the PH is below 7 the body is

  • acidic
  • alkaline

17. what does adenine pair with in DNA

  • thymine
  • guanine
  • cytosine

18. electrons..

  • 1 unit of positive charge, 0 atomic mass unit
  • 1 unit of positive charge, 1 atomic mass unit
  • 1 unit negative charge
  • no electrical charge, 1 atomic mass unit

19. what is it called when sugars link and a molecule of H2o is released?

  • glycosidic linkage
  • glycolic linkage
  • glycolipid linkage

20. the body is a variety of

  • carbon hydrogen oxygen and nitrogen
  • carbon hydrogen and nitrogen
  • carbon hydrogen and oxygen