1. Which of these lists is in order from smallest to largest? 1. cell, atom, molecule, electron, tissue, ecosystem 2. ecosystem, organ, tissue, cell, atom, molecule, proton 3. cell, community, population, ecosystem, biome, biosphere 4. neutron, atom, molecule, organelle, cell, organ, community 5. electron, molecule, atom, cell, tissue, organ system, biome

2. Which of the following levels of classification is the most inclusive? 1.Class 2.Family 3.Order 4.Phylum 5.genus

3. Of the 20 amino acids normally found in protein, how many are “essential”? 1.5 2.10 3.all of them

4. Who discovered Natural Selection? 1.Darwin 2.Linnaeus 3.Wallace 4.Margulis 5.Both a and c

5. Of the following, which is most characteristic of science? 1.Reason 2.Logic 3.Guessing 4.Testing 5.questioning

6. Which of these elements is not found in a typical carbohydrate? 1.Carbon 2.Hydrogen 3.Oxygen 4.Nitrogen 5.all are found in all carbohydrates

7. Which of these contains more energy? 1.ATP 2.ADP

8. Members of the same species found living in the same geographic area are referred to as: 1.a community 2.an ecosystem 3.a population 4.an organism 5.a biosphere

9. In metabolism, which of the following would be used for an immediate and quick source of energy? 1.Protein 2.nucleic acid 3.Lipid 4.Water 5.carbohydrate

10. Fats and oils are referred to as triglycerides because: 1.they contain three glycerol molecules 2.they contain three fatty acids attached to a glycerol 3.they contain three amino acids 4.they contain three phospholipids 5.they contain three sterols

11. If glucose is a monomer, sucrose can be called a________. 1.dimer 2.two-mer 3.bimer 4.any of the above

12. Which of the following is not a part of the cell theory? 1.new cells arise only from preexisting cells 2.the cell is the basic unit of life 3.only eukaryotes are made of cells 4.anything smaller than a cell is not alive 5.all living things are composed of cells

13. All matter is made up of ________________________. 1.Atoms 2.Cells 3.Organelles 4.Tissues 5.molecules

14. The monomers used to make a DNA molecule are: 1.Monosaccharides 2.Amino Acids 3.Nucleotides 4.Nucleic Acids

15. A structure found in animal cells that is not found in plant cells is: 1.Mitochondrion 2.Nucleus 3.Ribosome 4.None of the above are only in animal cells.

16. Which is the smallest unit of life that can exist as a separate entity? 1.a cell 2.a molecule 3.an organ 4.a population 5.an ecosystem

17. Homeostasis provides what kind of internal environment for living things? 1.Positive 2.constant 3.Limiting 4.Changing 5.chemical and physical

18. If two amino acids make a di-peptide and three amino acids make a tri- peptide, what do 437 amino acids make? 1.a polypeptide 2.a lipid 3.a carbohydrate 4.all of the above

19. A mutation is a change in 1.Homeostasis 2.Development 3.Metabolism 4.hereditary information 5.life cycle

20. What important biological molecule has been called the “energy currency of a cell”? 1.Carbohydrate 2.Lipid 3.Nucleic Acid 4.Adenosine triphosphate 5.Glucose

21. ______a process found only in plants and some bacteria 1.Metabolism 2.Reproduction 3.Photosynthesis 4.Growth 5.homeostasis

22. Which among the following organisms is not a member of the Eukarya? 1.Bacteria 2.Protist 3.Mammal 4.Onion

23. When you have a viral infection (like a cold) and your doctor prescribes an antibiotic, they do so because: 1.viruses are killed by antibiotics 2.viruses are weakened by antibiotics 3.you might be more susceptible to bacterial infection at this time 4.antibiotics strengthen your immune system 5.antibiotics are kind of like vitamins

24. A structure found in plant cells that is not found in animal cells is: 1.Cell Wall 2.Plastid 3.Central Vacuole 4.All of the above

25. Saturated fats are 1.solid at room temperature 2.liquid at room temperature 3.the same as trans fats 4.better for you than unsaturated fats 5.all loaded with cholesterol