Biol 101S07-1.exm

Biol 101S07-1.exm - Biol. 101 DeSaix Jan. 30, 2007 Name_...

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Biol. 101 – DeSaix Jan. 30, 2007 Name________________________ Print your name, last name first, and your PID number legibly on your answer sheet. Bubble in both below. Each answer is worth 2 points. Always choose one best answer and use only number 2 pencils to fill in your answers. Be sure to sign the pledge on your answer sheet. The last question will be used only if another question has to be deleted. Turn in your answer sheet in alphabetical order at the front of the room. Keep your test paper with answers to check against the key so that you will know what you have missed. The key will be posted after the test. ____ 1. What are the basic “building blocks” of DNA? 1) protein 2) carbohydrates and lipids 3) 20 amino acids 4) 26 nucleotides 5) four nucleotides. ____ 2. Which is a monomer of carbohydrates? 1) Glycerol 2) Nucleotide 3) Cellulose 4) Monosaccharide 5) Both 3 and 4. ____ 3. Glycogen: 1) contains glucose molecules. 2) contains C, H, and O atoms. 3) is a polysaccharide. 4) is a storage molecule for sugar in animals. 5) all of the above. ____ 4. Peptide bonds: 1) are used to form amino acids. 2) form between fatty acids. 3) are formed by a hydrolysis reaction. 4) link amino acids. 5) None of the choices are correct. ____ 5. You are told that the cells on a microscope slide are plant, animal, or bacterial. You look at them through a microscope and see cell walls and membrane-bound organelles. You conclude that the cells: 1) are plant cells. 2) are animal cells. 3) are bacteria. 4) could either be plant or bacterial. 5) could be plant, animal or bacterial. ____ 6. A cell that can be classified as prokaryotic is: 1) liver cell 2) bacteria 3) amoeba 4) all of the above. ____ 7. Which of these cell features is absent in a prokaryote cell? 1) Plasma membrane 2) Nucleoid 3) Cytoplasm 4) Nucleus 5) DNA. ____ 8. If nucleotides and nucleic acids were suddenly eliminated from your body, how would it affect you? 1) you would be unable to reproduce. 2) you could no longer use energy. 3) your cells could not divide. 4) your cells could not make proteins. 5) all of the above. ____ 9. Proteins may function as: 1) structural building materials. 2) hormones. 3) transport molecules. 4) enzymes. 5) all of the above. ___ 10. The following metabolic pathway is switched off by feedback inhibition. The end product, “Z”, most likely inhibits which enzyme? 1) 1 2) 2 3) 3 4) All of these. Enzyme 1 enzyme 2 enzyme 3 W --------------------→ X-------------------------→ Y ----------------------→ Z ___ 11. The fluid mosaic model refers to: 1) the arrangement of swimming pool tiles. 2) the arrangement of organelles inside cells. 3) the arrangement of components in plasma membranes. 4) the arrangement of cells in cork. 5) the arrangement of monomers in a protein polymer. ___ 12.
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Biol 101S07-1.exm - Biol. 101 DeSaix Jan. 30, 2007 Name_...

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