{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

SUMMER 2010 - BIO 1161 - QUIZ 2

SUMMER 2010 - BIO 1161 - QUIZ 2 - 1V ante)U“ I J V TA...

Info icon This preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
Image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1V ante: \)U“ I J V TA: BIOL 1161: INTRODUCTION TO BIOLOGICAL SCIENCE LABORATORY Quiz #2 on Labs 3 and 7 (90%); and Lab 4 reading (10%) Multiple Choice: circle the best answer from the choices given (2.5 pts/ea) 1. Co oared to a solution of pH 3, a solution of pH 1 is 100 times more acidic. 7. The basic structural unit of the carbohydrate is the: b. 10 times more acidic. a. Disaccharide c. 10 times more basic. b. Reducing sugar d. 100 times more basic. @ Monosaccharide . Unisaccharide 2. When sodium hydroxide (NaOH) is added to water, it ionizes, releasing OH" and Na+ ions. The resulting 8. The basic bonds joining amino acids are: solution is 4. Amine bonds acidic. ,. Q Peptide bonds basic. c. Aldehyde bonds c. neutral. d. H dro en bonds (1. abuffer. .. W90? otCAOl ’2 (61“? y g 9. Benedict’s reagent tests for the presence of: 3. Solutions that contain buffers tend to resist pH changes a. Simple sugars because buffers b. Complex sugars a. are bases. Reducing sugars change from ionic to non-ionic in solution. . Starch @ change from non-ionic to ionic in response to changes in pH and release or absorb Hi 10. Sudan IV reagent tests for the presence of: /@/ are weak acids or bases. Lipids . Aminofleids 4. The notation [H+] refers to the c. —Naeleotides Wednesday, June 9‘“, 2010. / a. number of H+ ions present in a solution. (1. Starch I qu S b. number of protons in an HJr ion. concentration of H+ ions in moles per liter. 11. Which of the following will result in a positive reaction chemical reactivity of H+ ions. when mixed with Lugol’s? — MS COiOV “4 a. Glucose W€S€HC€ (A9 Smith 5. The microscope should always be: b. Protein a. carried with the stronger hand 0. Fructose b. carried horizontally Starch 9 carried vertically upright . carried with help 12. You have learned that the old cliché "oil and water don't mix" is true. Why? 6. Total magnification is defined as: a. Oil exhibits polarity and water does not. a. working distance x objective magnification Water exhibits polarity and oil does not. a ocular magnification x objective magnification C. Oil is hydrophilic. . field of view x objective magnification (1. Water is hydrophobic. d. resolution / magnification True or False: 2 pts/each 13. T A base neunalizew SC“ Jr—JVVW 14. g It is not necessary to calibrate the pH meter if the sample has been estimated to have neutral pH. 15 T The ocular lens is also called the eyepiece. ? 16. : All monosaccharides react with Benedict’s reagent. 17. L Monomers are joined together by the process of hydrolysis. 18. l Monomers are the building blocks for polymers. 19. i Biuret reagent reacts with amino acid, but not with protein. mdmfei’ \MVH’ SDWCG Evil/K36? €166! View, SVYIUtIiOV \AgiDI/l Coctvce I fihé mdjvg’l’YYlfii/H’ 20. £ The iris diaphragm in a microscope is used to adjust the working distance. 21. E Weak acids ionize completely. 22. .1— The sum of the [HH and [OH‘] ion concentrations of any given solution is always constant. ...
View Full Document

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern