Test your basic knowledge |

Biology: Essential Nutrients

Subjects : science, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Phospholipids have a _______ head - and a _____________ tail.






2. _____________ is when a protein changes shape temporarily.






3. _____________ _____________ _____________- coils of amino acids.






4. ______ are energy storage compounds.






5. Nucleic acids are composed of _______ - ____________ - and _____________ bases.






6. ___________: combining two things together to make something new.






7. The three types of Polysaccharides are starch - _____________ - and cellulose.






8. _____________ are found in plant cell walls.






9. _____________ is when a protein changes shape permanently.






10. __________ _____ ___________ help in chemical reactions.






11. __________ are the structural components of the cell.






12. Breakdown of more complex substances into simpler ones with release of energy.






13. Monosaccharides are also called ________ __________.






14. _________________ are made of a single sugar unit.






15. Some examples of Monosaccharides are Glucose - ___________ - Fructose.






16. ___________ are important for long-term storage of energy.






17. All _____________ have different proteins (amino acids)






18. ____________ creates cholesterol - estrogen and pheromones.






19. ________ are very stable insoluble molecules. Used for waterproofing/ protection. Ex. Candles etc -.






20. _______________ ______________: double bonds exist between carbons - they are unstable and easy to break down. plant sources






21. _____________ is when a protein changes shape permanently.






22. Macronutrients consists of carbohydrates - __________ - and lipids.






23. The three types of Polysaccharides are starch - _____________ - and cellulose.






24. _______________ is the primary energy source for cells.






25. Some examples of Monosaccharides are Glucose - Galactose - __________.






26. Macronutrients consists of carbohydrates - __________ - and lipids.






27. ____________ _______ are genetic material that directs cell activity.






28. ________________ usually have a molecular formula ratio of C:H:O in 1:2:1.






29. Micronutrients consists of __________ _____ _________ - and Nucleic Acids.






30. Lipids are used to make _____________.






31. ______________ are made of two monosaccharides combined together.






32. Proteins are composed of ______ ______.






33. _____________ contain up to 1000-6000 glucose molecules linked together.






34. Proteins __________ ligaments - tendons - and skin.






35. Synthesis of more complex substances from simpler ones.






36. _______________ are made of all sugar molecules.






37. ________ are used to maintain a body temperature.






38. ______________ _______________ : single bonds exist between carbons - they are stable and hard to break down so they will remain in our body longer. animal sources






39. There are __________ different kinds of Amino acids. __________ can be made in our bodies - while ________ is acquired through eating food.






40. There are ______ kinds of lipids.






41. _____________ ________ _____ are the eight amino acids our body cannot make.






42. _______________ consists of carbohydrates - proteins - and lipids.






43. ____________: when molecules have the same chemical formula but different structures.






44. ___________: to lose a water molecule.






45. Lipids are _____________ (does not dissolve in water).






46. _____________ are made of one glycerol and three fatty acid chains.






47. Nucleic acids are composed of sugar - phosphate - and _____________ bases.






48. ______________ _______________ : single bonds exist between carbons - they are stable and hard to break down so they will remain in our body longer. animal sources






49. 100 g of fat = __________ of energy.






50. The 200 000 chemical reactions that takes place in the cells of your body is called _____________.