1
Bio 411 Exam 1 Questions with Answers (100% Correct
Answers)
What are the four major types of biomolecules? Answer: Nucleic acids,
proteins, polysaccharides, lipids
How are lipids different from the other 3 types of molecules? Answer:
They are hydrophobic, share a property rather than a structure
List the biological functions of nucleic acids. Answer: Encode genetic
information
energy exchange ATP & GTP
metabolic regulation
catalytic (some)
List the biological functions of proteins. Answer: "workhorses" of the
cell
structure
movement
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,2
catalysis
antibodies
List the biological functions of carbohydrates. Answer: Energy cycle in
the biosphere
structural: cellulose in woody plants, exoskeletons in insects
molecular recognition
List the biological functions of lipids. Answer: Structural- membranes
energy storage & insulation- fats
Vitamins- A, D, E, K
steroid hormones and eicosanoids
Describe the Scientific Method. Answer: A system where observations
lead to a hypothesis which then leads to an experiement yielding
results that either support or don't support the hypothesis, which in
return leads to a different or modified hypothesis
Define hypothesis. Answer: a tentative explanation of observations
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, 3
What are the possible outcomes of an experiment (relative to the
hyposthesis)? Answer: Supported and results are consistent after many
trials, it is considered a theory.
Disproven- the hypothesis must be rejected and a new one constructed
What are the four characteristics of life? Answer: Complexity
Change and respond to environment
Reproduction
Evolution
What characteristics do the living and nonliving world share? Answer:
Both are made of chemical elements
Both obey the laws of chemistry and physics
What is thermodynamics? Answer: The study of energy and its
transformations
State the first law of thermodynamics. Answer: Energy cant be created
or destroyed, it changes form, total energy in the universe is constant,
living organisms are energy transformers
© 2025 All rights reserved
Bio 411 Exam 1 Questions with Answers (100% Correct
Answers)
What are the four major types of biomolecules? Answer: Nucleic acids,
proteins, polysaccharides, lipids
How are lipids different from the other 3 types of molecules? Answer:
They are hydrophobic, share a property rather than a structure
List the biological functions of nucleic acids. Answer: Encode genetic
information
energy exchange ATP & GTP
metabolic regulation
catalytic (some)
List the biological functions of proteins. Answer: "workhorses" of the
cell
structure
movement
© 2025 All rights reserved
,2
catalysis
antibodies
List the biological functions of carbohydrates. Answer: Energy cycle in
the biosphere
structural: cellulose in woody plants, exoskeletons in insects
molecular recognition
List the biological functions of lipids. Answer: Structural- membranes
energy storage & insulation- fats
Vitamins- A, D, E, K
steroid hormones and eicosanoids
Describe the Scientific Method. Answer: A system where observations
lead to a hypothesis which then leads to an experiement yielding
results that either support or don't support the hypothesis, which in
return leads to a different or modified hypothesis
Define hypothesis. Answer: a tentative explanation of observations
© 2025 All rights reserved
, 3
What are the possible outcomes of an experiment (relative to the
hyposthesis)? Answer: Supported and results are consistent after many
trials, it is considered a theory.
Disproven- the hypothesis must be rejected and a new one constructed
What are the four characteristics of life? Answer: Complexity
Change and respond to environment
Reproduction
Evolution
What characteristics do the living and nonliving world share? Answer:
Both are made of chemical elements
Both obey the laws of chemistry and physics
What is thermodynamics? Answer: The study of energy and its
transformations
State the first law of thermodynamics. Answer: Energy cant be created
or destroyed, it changes form, total energy in the universe is constant,
living organisms are energy transformers
© 2025 All rights reserved
