TEST A 1. Which of the following is the usable form of energy for all known orga

Question

TEST A 1. Which of the following is the usable form of energy for all known organisms a) ATEp b) glucose c) light d) all oxidizable carbohydrates, lipids, & amino acids e) depends upon the specific organism 2· The following statements are true A bacteria is unable to grow on the sugar xylose ie. use xylose as a source of carbon & energy This bacteria spontaneoushy develops mutations that gives it the ability to grow on xylose ie. the mutation allows the bacteria to use xylose as a source of carbon & energy The question is about the mutant bacteria when it is grown as follows. When the mutant bacteria is grown in the complete absence of xylose (it never is exposed to xylose), the mutation is called: a) beneficial b) conditional c) lethal d) silent e) mortal 3. The appearance of an organism is the: a) phenotype b) genotype o) allotype d diotype 4. The genetic composition (makeup) of an organism is a)phenotype b)igenotype 5. Which of the following is a polar covalent bond: a) CC b) C-O c) ?? d) none of c) allotype d) idiotype these 6. Which of the following is a nonpolar covalent bond: a) CH b) CAN c) CO d) none 7. In a well-designed experiment the expected result based upon extensive previous experience is called the: ay experimental group b/ extended group c) control group d) discographic group e) none of these 8. A mutated form of a heritable trait whose frequency in a population will increase because of natural selection would be characterized as: a) beneficial b) conditional c) lethal d) silent e) mortal 9. Which of these has an electrical charge of (-1) a) neutrino b) electron c) proton d) quark 10. HCl is a strong acid. 2.0 x 10 moles of HCl is added to 2.0 liter of pure water What is the pH for the solution after the addition of the HCI to the water: a) 0 b) 1 c) 2 d) 3 e) 4 11. A buffer is a) a weak acid b) a weak base c) both a weak acid and weak base d) 12.All covalent bonds are of the same strength. a) True b) False 13. lonic bonds are always strong. a) True b) False 14. The observation that all life today employs ATP as the only usable enea none evidence for: a) intelligent design of life b) common ancestry for all life c) Lamarckian evolution d) biochemical diversity 15.If a molecule has a molecular weight (mw) of 340 daltons (Da), then how many 16. An ionic bond between two atoms result from: a) a homozygous e shell b) a shared grams are required to make 0.1 mole: a)1000 g b) 340 g c) 34g d) 3.4g e pair where each partner contributes one e to the pair c) one atom donates an e and the other accepts the e d) electrostatic repulsion orbitals with partial charge properties e) none (a,b,c,d) are correct

Explanation / Answer

Question Answer 1 a. ATP 2 b. conditional 3 a 4 b 5 b 6 a 7 c 8 b 9 b 10 d 11 c 12 b 13 b 14 d 15 c 16 c 17 e 18 a 19 d 20 b 21 c 22 d 23 a 24 a 25 c 26 b 27 b 28 b 29 c 30 b

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