1|Page
ASU BIO 181 EXAM 1 PRACTICE UPDATED
QUESTIONS AND 100% CORRECT ANSWERS
WITH A GUARANTEED A+|| 2025-2026 LATEST
AND COMPLETE UPDATE WITH VERIFIED
SOLUTIONS|| GUARANTEED PASS!!
Which six elements are most important for the survival of life? - ANSWER: H, C,
N, O, P, S
The shared biochemistry of all life is often considered evidence for: - ANSWER:
Shared common descent of all life on earth.
Water has which property or properties? - ANSWER: Hydrophilic
Forms hydrogen bonds
Ocean acidification is resulting due to - ANSWER: Global release of CO2 through
the use of fossil fuels
Which other element (besides Carbon) is often suggested as having potential for
life - ANSWER: Silicon
Which kind of organic compound is pictured? - ANSWER: Amino acid
What kind of molecule is pictured? - ANSWER: RNA
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Which kind of organic compound is pictured? - ANSWER: phospholipid
All things being equal which fatty acid will have a lower melting point? -
ANSWER: Short-chain fatty acid
What kind of molecule is pictured? - ANSWER: polypeptide
Saturated or unsaturated fat? - ANSWER: saturated(top)
Which type of molecular interaction is strongest? - ANSWER: Covalent bond
Water is a... - ANSWER: polar molecule
A low pH is typical of - ANSWER: acids
What element is called the 'backbone of life'? - ANSWER: carbon
DNA or RNA? - ANSWER: DNA
This amino acid is capable of forming disulfide bridges - ANSWER: Cysteine
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Name this compound... - ANSWER: Cholesterol
Exothermic or Endothermic? - ANSWER: exothermic
Which level of protein structure? - ANSWER: Quaternary
The name of a conceptual model for enzyme action - ANSWER: Lock and Key,
Induced Fit
Which level of protein structure is shown in the picture below? - ANSWER:
Primary
Which level of protein structure is shown in the picture below for the two proteins?
- ANSWER: tertiary
Would the subsitution (due to a mutation) of alanine (hydrophobic amino acid) for
serine (a polar and hydrophobic amino acid) have a large or small effect on the
structure of a protein? - ANSWER: Yes, likely a large effect. The substitution of
two chemically very different amino acids could have a large effect on protein
structure.
ASU BIO 181 EXAM 1 PRACTICE UPDATED
QUESTIONS AND 100% CORRECT ANSWERS
WITH A GUARANTEED A+|| 2025-2026 LATEST
AND COMPLETE UPDATE WITH VERIFIED
SOLUTIONS|| GUARANTEED PASS!!
Which six elements are most important for the survival of life? - ANSWER: H, C,
N, O, P, S
The shared biochemistry of all life is often considered evidence for: - ANSWER:
Shared common descent of all life on earth.
Water has which property or properties? - ANSWER: Hydrophilic
Forms hydrogen bonds
Ocean acidification is resulting due to - ANSWER: Global release of CO2 through
the use of fossil fuels
Which other element (besides Carbon) is often suggested as having potential for
life - ANSWER: Silicon
Which kind of organic compound is pictured? - ANSWER: Amino acid
What kind of molecule is pictured? - ANSWER: RNA
,2|Page
Which kind of organic compound is pictured? - ANSWER: phospholipid
All things being equal which fatty acid will have a lower melting point? -
ANSWER: Short-chain fatty acid
What kind of molecule is pictured? - ANSWER: polypeptide
Saturated or unsaturated fat? - ANSWER: saturated(top)
Which type of molecular interaction is strongest? - ANSWER: Covalent bond
Water is a... - ANSWER: polar molecule
A low pH is typical of - ANSWER: acids
What element is called the 'backbone of life'? - ANSWER: carbon
DNA or RNA? - ANSWER: DNA
This amino acid is capable of forming disulfide bridges - ANSWER: Cysteine
, 3|Page
Name this compound... - ANSWER: Cholesterol
Exothermic or Endothermic? - ANSWER: exothermic
Which level of protein structure? - ANSWER: Quaternary
The name of a conceptual model for enzyme action - ANSWER: Lock and Key,
Induced Fit
Which level of protein structure is shown in the picture below? - ANSWER:
Primary
Which level of protein structure is shown in the picture below for the two proteins?
- ANSWER: tertiary
Would the subsitution (due to a mutation) of alanine (hydrophobic amino acid) for
serine (a polar and hydrophobic amino acid) have a large or small effect on the
structure of a protein? - ANSWER: Yes, likely a large effect. The substitution of
two chemically very different amino acids could have a large effect on protein
structure.
