quiz 1 review
Download
Skip this Video
Download Presentation
Quiz #1 review

Loading in 2 Seconds...

play fullscreen
1 / 8

Quiz #1 review - PowerPoint PPT Presentation


  • 389 Views
  • Uploaded on

Quiz #1 review . A pharmaceutical company hires a chemist to analyze the purity of the water being used in its drug preparations. If the water is pure, the chemist would expect to find A) only molecules of H2O. B)H2O molecules and H + ions. C) H2O molecules and OH – ions.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Quiz #1 review' - nate


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2
A pharmaceutical company hires a chemist to analyze the purity of the water being used in its drug preparations. If the water is pure, the chemist would expect to find

A) only molecules of H2O.

B)H2O molecules and H+ ions.

C) H2O molecules and OH– ions.

D) H2O molecules, H+ ions, and OH– ions.

E) only H+ ions and OH– ions.

water also forms ions sometimes
Water also forms ions sometimes

H2O ↔ H+ + OH-

  • Spontaneously happens to water molecules
  • 1/ 107 water molecules are ionized in distilled water
  • In dH2O, [H+]= [OH-]

salt - neutral molecule releases ions

acid releases hydrogen H+, burns

base releases hydroxide OH–, slimy

a protein containing more than one polypeptide chain exhibits the level of protein structure
A protein containing more than one polypeptide chain exhibits the __________ level of protein structure.
  • primary
  • secondary
  • tertiary
  • quaternary
  • infinite
proteins have four levels of structure
Proteins have four levels of structure
  • Primary
  • Secondary
  • Tertiary
  • Quaternary
  • Protein structure depends on all these levels of interaction
slide6
Which one of the following cells would have the greatest surface-to-volume ratio?  

A) bacterium  

B) human red blood cell  

C) human muscle cell  

D) frog egg  

E) ostrich egg

cells are small for good reason
Cells are small for good reason
  • Surface area: volume ratio
  • Rate of food/oxygen entering the cell depends on surface area
  • For large volumes, this rate would approach zero
the rest of the answers so you can practice
The rest of the answers so you can practice

1. B

2. A

3. C

4. A

5. C

6. C

7. D

8. C

9. D

10. D

11. B

12. C

13. A

14. B

15. D

16. B

17. A

18. A

19. A

20. A

ad