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Bio 311C Midterm Exam 1 Questions And 100% Complete Correct Answers.
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  • BIO 311C

What are the essential elements for life on Earth? - Answer "SCHNOP" -sulfur -carbon -hydrogen -nitrogen -oxygen -phosphorus Rank hydrogen, oxygen, nitrogen, and carbon in order of decreasing electronegativity. - Answer O, N, C, H Water has surface tension because ___________. - A...

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  • October 17, 2024
  • 14
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • essential elements

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  • BIO 311C
  • BIO 311C

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Bio 311C Midterm Exam 1 Questions
And 100% Complete Correct Answers.
What are the essential elements for life on Earth? - Answer "SCHNOP"

-sulfur

-carbon

-hydrogen

-nitrogen

-oxygen

-phosphorus



Rank hydrogen, oxygen, nitrogen, and carbon in order of decreasing electronegativity. - Answer O, N, C,
H



Water has surface tension because ___________. - Answer hydrogen bonds between surface water
molecules resist being stretched



Though you add heat, the temperature of boiling water remains constant because _________________.
- Answer it takes energy to break hydrogen bonds



List the three domains. Which two are more closely related? - Answer Archaea, Bacteria, Eukarya;



Archaea & Eukarya are more closely related



What name is given to the bond between water molecules? - Answer hydrogen bond



Distinguish between adhesion and cohesion. - Answer Adhesion

-attraction between different molecules

, Cohesion

-attraction between the same molecule



Differentiate between anabolism and catabolism. - Answer Catabolism

-release energy (break down)



Anabolism

-require energy (build up)



Why does water have high specific heat? - Answer a water molecule can form 4 hydrogen bonds



Importance of Hershey-Chase experiment. - Answer showed that when bacteriophages, which are
composed of DNA and protein, infect bacteria, their DNA enters the host bacterial cell, but most of their
protein does not.



In the experiment, the radioactive isotope 32-P labels the T2 phage's _____. - Answer DNA



Hershey and Chase used _____ to radioactively label the T2 phage's proteins. - Answer 35-S



What is the process by which monomers are linked together to form polymers? - Answer dehydration
reaction (condensation)



In a hydrolysis reaction, __________, and in this process water is __________. - Answer polymers are
broken up into monomers...consumed.



How many molecules of water are used to completely hydrolyze a polymer that is 11 monomers long? -
Answer 10 (11 monomers: 10 bonds)



The type of bond that forms to join monomers (such as sugars and amino acids) into polymers (such as
starch and proteins) is a(n) __________ bond. - Answer covalent

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