Biology 101 Unit 1 Practice Exam Questions and
Answers
What is NOT a characteristic shared by all living things? - -Ability to generate energy
through photosynthesis
-What is the best illustrate the hierarchical organization of living systems? - -chloroplast,
plant cell, tree
-In biology, a theory is best described as - -a scientifically accepted explanation based
accumulated evidence
-In the process of scientific inquiry, the next step after generating a hypothesis is usually to
- -make one or more predictions.
-Charles Darwin's key contribution to our understanding of evolution was introducing the
concept that - -natural selection was the mechanism of evolutionary change.
-What about natural selection is true? - -There must be heritable variation in a trait for it
to evolve by natural selection
-What observation provides evidence that whales evolved from terrestrial mammals? - -
The forelimbs of whales are made up of the same arrangement of bones as other animals.
-What is an example of a nucleic acid? - -Uracil
-What is an example of a carbohydrate? - -Cellulose
-True or False: All proteins have quarternary structure? - -False
-What characteristic would allow you to determine if a fatty acid was in cis or trans
configuration? - -The arrangement of the hydrogen atoms
-The _____ structure of a protein refers to the presence of hydrogen bonds resulting in
helices and pleated sheet structures. - -Secondary
-In what molecule would you find a fatty acid? - -Phosoplipid
-Trans fats are a health concern because eating trans fats - -increases LDL and lowers HDL
cholesterol levels
-What statement regarding a protein denaturation is NOT true? - -Denaturation does not
usually affect protein function
Answers
What is NOT a characteristic shared by all living things? - -Ability to generate energy
through photosynthesis
-What is the best illustrate the hierarchical organization of living systems? - -chloroplast,
plant cell, tree
-In biology, a theory is best described as - -a scientifically accepted explanation based
accumulated evidence
-In the process of scientific inquiry, the next step after generating a hypothesis is usually to
- -make one or more predictions.
-Charles Darwin's key contribution to our understanding of evolution was introducing the
concept that - -natural selection was the mechanism of evolutionary change.
-What about natural selection is true? - -There must be heritable variation in a trait for it
to evolve by natural selection
-What observation provides evidence that whales evolved from terrestrial mammals? - -
The forelimbs of whales are made up of the same arrangement of bones as other animals.
-What is an example of a nucleic acid? - -Uracil
-What is an example of a carbohydrate? - -Cellulose
-True or False: All proteins have quarternary structure? - -False
-What characteristic would allow you to determine if a fatty acid was in cis or trans
configuration? - -The arrangement of the hydrogen atoms
-The _____ structure of a protein refers to the presence of hydrogen bonds resulting in
helices and pleated sheet structures. - -Secondary
-In what molecule would you find a fatty acid? - -Phosoplipid
-Trans fats are a health concern because eating trans fats - -increases LDL and lowers HDL
cholesterol levels
-What statement regarding a protein denaturation is NOT true? - -Denaturation does not
usually affect protein function
