BIO 201 Exam 1 Frampton UNCW Complete Review 2026
| Accurate Answers
1. What is the first step in the scientific inquiry process?
Observation
Data collection
Hypothesis formulation
Experimentation
2. Describe the significance of hydrocarbons in biological reactions.
Hydrocarbons are essential for the synthesis of nucleic acids.
Hydrocarbons are involved in the transport of oxygen in the blood.
Hydrocarbons can release a large amount of energy during
reactions.
Hydrocarbons are primarily used for structural support in cells.
3. In plant cells, chloroplasts:
serve the same purpose that mitochondria serve in animal cells
are the site where light energy is converted into chemical energy
are a useless remnant of evolution, much like the appendix in humans
play an important role in the breakdown of plant toxins
sit around worrying about what other organelles think of them
4. Tertiary structure is determined by interactions between R groups such as:
Hydrophobic interactions
, Ionic bonds
Hydrogen bonds
All of the above
5. Describe how carbon's tetravalence contributes to the complexity of
biological molecules.
Carbon's tetravalence makes it unable to bond with other elements.
Carbon's tetravalence is irrelevant to biological molecules.
Carbon's tetravalence allows it to form four covalent bonds,
enabling the creation of complex structures.
Carbon's tetravalence limits its bonding to only two other atoms.
6. Describe the significance of equal electron sharing in a nonpolar covalent
bond.
Equal electron sharing increases the reactivity of the molecule.
Equal electron sharing leads to the formation of ionic bonds.
Equal electron sharing results in no charge separation across the
molecule.
Equal electron sharing creates a polar molecule.
7. What are the three main types of chemical bonds?
Hydrogen, covalent, and hydrophobic interactions.
Covalent, metallic, and van der Waals forces.
Covalent, ionic, and hydrogen bonding.
Ionic, hydrogen, and dipole-dipole interactions.
,8. The sequence 'atom → molecule → cell → organism → population →
community → ecosystem → biosphere' is known as what?
Photosynthesis
Levels of the earth
Levels of organization
9. What are the components that make up hemoglobin?
One alpha chain and three beta chains
Four alpha chains
Two alpha and two beta chains
Two beta chains and one gamma chain
10. In a biological system, how might the presence of hydrogen bonds affect
the structure of proteins?
Hydrogen bonds prevent proteins from folding properly.
Hydrogen bonds are irrelevant to protein structure.
Hydrogen bonds only affect the primary structure of proteins.
Hydrogen bonds help stabilize the secondary and tertiary
structures of proteins.
11. If water's cohesion is disrupted, what effect might this have on the movement
of water in plants?
It would increase the rate of photosynthesis.
It would promote faster growth of the plant.
It would hinder the movement of water through the plant.
, It would enhance nutrient absorption.
12. About twenty-five of the ninety two natural elements are known to be
essential to life. Which four of these make up about 96 percent of living
matter?
carbon, oxygen, phosphorus, hydrogen
carbon, hydrogen, nitrogen, oxygen
oxygen, hydrogen, calcium, nitrogen
carbon, sodium, hydrogen, nitrogen
13. What property of carbon allows it to form diverse molecules?
Trivalence
Monovalence
Tetravalence
Divalence
14. If a mutation in a protein disrupts covalent bonding, what effect might this
have on the protein's function?
It will have no effect on the protein's function.
It will enhance the protein's ability to bind to other molecules.
It may lead to a loss of structural stability and function.
It will increase the protein's solubility in water.
15. If a new compound is discovered that contains only carbon and hydrogen,
what can be inferred about its potential energy release during reactions?
It may release a large amount of energy during reactions.
| Accurate Answers
1. What is the first step in the scientific inquiry process?
Observation
Data collection
Hypothesis formulation
Experimentation
2. Describe the significance of hydrocarbons in biological reactions.
Hydrocarbons are essential for the synthesis of nucleic acids.
Hydrocarbons are involved in the transport of oxygen in the blood.
Hydrocarbons can release a large amount of energy during
reactions.
Hydrocarbons are primarily used for structural support in cells.
3. In plant cells, chloroplasts:
serve the same purpose that mitochondria serve in animal cells
are the site where light energy is converted into chemical energy
are a useless remnant of evolution, much like the appendix in humans
play an important role in the breakdown of plant toxins
sit around worrying about what other organelles think of them
4. Tertiary structure is determined by interactions between R groups such as:
Hydrophobic interactions
, Ionic bonds
Hydrogen bonds
All of the above
5. Describe how carbon's tetravalence contributes to the complexity of
biological molecules.
Carbon's tetravalence makes it unable to bond with other elements.
Carbon's tetravalence is irrelevant to biological molecules.
Carbon's tetravalence allows it to form four covalent bonds,
enabling the creation of complex structures.
Carbon's tetravalence limits its bonding to only two other atoms.
6. Describe the significance of equal electron sharing in a nonpolar covalent
bond.
Equal electron sharing increases the reactivity of the molecule.
Equal electron sharing leads to the formation of ionic bonds.
Equal electron sharing results in no charge separation across the
molecule.
Equal electron sharing creates a polar molecule.
7. What are the three main types of chemical bonds?
Hydrogen, covalent, and hydrophobic interactions.
Covalent, metallic, and van der Waals forces.
Covalent, ionic, and hydrogen bonding.
Ionic, hydrogen, and dipole-dipole interactions.
,8. The sequence 'atom → molecule → cell → organism → population →
community → ecosystem → biosphere' is known as what?
Photosynthesis
Levels of the earth
Levels of organization
9. What are the components that make up hemoglobin?
One alpha chain and three beta chains
Four alpha chains
Two alpha and two beta chains
Two beta chains and one gamma chain
10. In a biological system, how might the presence of hydrogen bonds affect
the structure of proteins?
Hydrogen bonds prevent proteins from folding properly.
Hydrogen bonds are irrelevant to protein structure.
Hydrogen bonds only affect the primary structure of proteins.
Hydrogen bonds help stabilize the secondary and tertiary
structures of proteins.
11. If water's cohesion is disrupted, what effect might this have on the movement
of water in plants?
It would increase the rate of photosynthesis.
It would promote faster growth of the plant.
It would hinder the movement of water through the plant.
, It would enhance nutrient absorption.
12. About twenty-five of the ninety two natural elements are known to be
essential to life. Which four of these make up about 96 percent of living
matter?
carbon, oxygen, phosphorus, hydrogen
carbon, hydrogen, nitrogen, oxygen
oxygen, hydrogen, calcium, nitrogen
carbon, sodium, hydrogen, nitrogen
13. What property of carbon allows it to form diverse molecules?
Trivalence
Monovalence
Tetravalence
Divalence
14. If a mutation in a protein disrupts covalent bonding, what effect might this
have on the protein's function?
It will have no effect on the protein's function.
It will enhance the protein's ability to bind to other molecules.
It may lead to a loss of structural stability and function.
It will increase the protein's solubility in water.
15. If a new compound is discovered that contains only carbon and hydrogen,
what can be inferred about its potential energy release during reactions?
It may release a large amount of energy during reactions.
