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BIO 353 Exam 1 Cell Biology Questions And Answers 2024/2025 Updated Tests
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BIO 353 Exam 1 Cell Biology Questions And Answers 2024/2025 Updated Tests The three tenets of the cell theory are: A) 1. Organisms except viruses consist of one or more cells; 2. The cell is the basic unit of structure for all organism except viruses; 3. All cells arise only from existing cell...

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  • October 10, 2024
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  • 2024/2025
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  • bio 353 exam 1
  • cell biology
  • bio 353 exam 1 cell biology questions and answers
  • bio 353 exam 1 cell biology
  • the three tenets of the cell theory are a 1 o

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BIO 353 Exam 1 Cell Biology Questions And Answers
The three tenets of the cell theory are:


A) 1. Organisms except viruses consist of one or more cells; 2. The cell is the basic unit of structure
for all organism except viruses; 3. All cells arise only from existing cells


B) 1. All Organisms consist of one or more cells; 2. The cells is the basic unit of structure for all
organisms; 3. Some cells arise from preexisting cells.


C) 1. All organisms consist of one or more cells; 2. The cell is the basic unit of structure for all
organism; 3. All Cells arise from preexisting cells ANS C) 1. All organisms consist of one or
more cells; 2. The cell is the basic unit of structure for all organism; 3. All Cells arise from
preexisting cells


If you want to examine a cellular structure that is less than 0.1um, what type of microscope would
you choose to perform such study?


A) Light

B) Electron ANS B) Electron


Light: An instrument with a visible light wavelength range of 400-700 nm, the limit of resolution is
200-350 nm


(.2-.35 um)


Anything small than .2 um would be best to use electron microscope


Which of the following is NOT a fundamental property of carbon?


A) Carbon-containing molecules are stable
B) Carbon atoms are most likely to form ionic bonds with one another

,C) Carbon has a valence of 4

D) Carbon-containing molecules are diverse ANS B) Carbon atoms are most likely to form ionic
bonds with one another


Biologically, which of the following is the least important characteristic of water?


A) Water molecules are polar
B) Water is a good solvent
C) Water molecules form numerous hydrogen bonds with each other

D) Water typically contains isotopes of hydrogen ANS D) Water typically contains isotopes of
hydrogen


Hydrophobic interactions is the results of the attraction force of hydrophobic molecules for each
other


A) True

B) False ANS B) False


The "Principle of Self Assembly" states that: The information requires to specify the folding of
macromolecules and their interactions to form more complicated structures with specific biological
functions (Blank 1) inherent in the polymers themselves (Blank 2) further information or energy
input


A) (1) is; (2) but requires
B) (1) is; (2) and requires no
C) (1) is not; (2) but requires

D. none of the above ANS B) (1) is; (2) and requires no



What amino acid has a disulfide bond? ANS Cysteine

, Then secondary structure of polypeptides ( alpha helix and beta sheets) are common among proteins
because they result from (blank 1) bonds between elements of the (blank 2).


A) (1) hydrogen; (2) polypeptide backbone
B) (1) Ionic; (2) amino acid side chains
C) (1) Ionic; (2) polypeptide backbone

D) None of the above ANS A) (1) hydrogen; (2) polypeptide backbone


The function of a protein with known amino acids sequence can be predicted by searching amino
acid sequence homology with other known proteins or searching domains with known functions


A)True

B) False ANS A) True


The antigen for a specific antibody generally does not have a specific structural feature. This lack of
specificity would allow an antibody to maximize its interaction with many different antigen targets.


A) True

B)False ANS B)False


An allosteric enzyme:


A) will allow substrate-level regulation
B) Cannot be activated by an allosteric effector
C) Has two forms with the same affinity to the substrate

D) Has an active site and an effector binding site ANS D) Has an active site and an effector
binding site


Enzyematic activity may be regulated by several means. For example- an inactive for of an enzyme
becomes active after being phosphorylated. Identify the correct mode of this regulation

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