BIO211 FINAL EXAM Medgar Evers College-CUNY School of Science, Health, & Technol

Question

BIO211 FINAL EXAM Medgar Evers College-CUNY School of Science, Health, & Technology Department of Biology PARTI (Ch. 1 "What is Life?" Ch.3 Biomolecules) statements to make circle for True and E for alse". For extra credit, correct false them true or explain why they are false. 1. The use of fermentation to make products such as cheese and tofu is an example of biotechnology. T 2. The history of biotechnology begins with the discovery of the DNA double helix. T /F 3. There are three domains of life on this planet, Bacteria, Archaea and Animalia. TIF 4. Fungi are multicellular prokaryotes. TIF 5. Decomposers are heterotrophs. T/F 6. All eukaryotes are multicellular organisms. TIF ("biological fuel" from inorganic materials. T 7. Aproducer is an organism that makes its own food 8. Energy cannot be created nor destroyed, but it can be transferred. TI F 9. As complexity increases so does potential (stored) energy. hypothesis. T /F 10. A scientist's suggested explanation for a natural event is called a 11. In an ecosystem, a. energy flows and nutrients cycle b. energy cycles and nutrients flow c. energy and nutrients cycle d. energy and nutrients flow 12. All of the chemical reactions that occur in a cell are called c. cytoplasm d. entropy a. homeostasis b. metabolism 13-18. Match each term with the appropriate category A. Proteins B. Nucleic Acids C. Carbohydrates D. Lipids Purines & Pyrimidines Starch Base pairing B D Cholesterol C Cellulose D Unsaturated Steroid Monosaccharide A Amino Acid D Triglyceride B Sugar-phosphate backbone Enzyme

Explanation / Answer

1. False (the use of biotechnology to make products as cheese and tofu is an example of fermentation)

2. False (the history begins with zymology)

3. False (Archea, bacteria, and Eukarya )

4. False (Fungi are multicellular eukaryotes)

5. True (because they get their energy from organic substrate )

6. False (All multicellular organisms are eukaryotes or unicellular eukaryotes example are ameba, paramoecium)

7. True

8. True

9. True

10. False (A scientific explanation for a natural event is called hypothesis)

11. A. (Energy flows and nutrient cycles)

12. Metabolism

13.

Purines and pyrimidines are nucleic acids (A,T,C & G)

Steroids are lipids because they are hydrophobic and insoluble in water

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