BSC 1010 Final Exam 2027 | FSW (Florida
South Western State College) | 150 Practice
Questions & Correct Answers | Complete
Biology Study Guide & Exam Prep
1. What is dehydration synthesis?
A) Formation of a covalent bond between two molecules by loss of water
B) Breakdown of polymers by adding water
C) Transfer of electrons between atoms
D) Movement of water across a membrane
Answer A: Formation of a covalent bond between two molecules by loss of water
Rationale: Dehydration synthesis (condensation) joins monomers by removing water.
2. What is a consumer/heterotroph?
A) Organism eating another organism for energy/nutrients
B) Organism that makes its own food
C) Organism that decomposes dead matter
D) Organism that photosynthesizes
Answer A: Organism eating another organism for energy/nutrients
Rationale: Heterotrophs obtain energy by consuming other organisms.
3. What is a primary producer/autotroph?
A) Organism that extracts energy and nutrients from the nonliving environment
B) Organism that eats other organisms
C) Organism that decomposes dead matter
D) Organism that lives in water
Answer A: Organism that extracts energy and nutrients from the nonliving environment
Rationale: Autotrophs synthesize organic compounds from inorganic sources.
4. The atomic number of an element is the number of:
A) Neutrons in the nucleus
B) Protons in the nucleus
C) Electrons in the outer shell
D) Protons and neutrons combined
Answer B: Protons in the nucleus
Rationale: Atomic number equals the number of protons, defining the element.
5. In a covalent bond, atoms:
A) Transfer electrons
,B) Share electrons
C) Attract opposite charges
D) Form hydrogen bonds
Answer B: Share electrons
Rationale: Covalent bonds involve sharing electron pairs between atoms.
6. In living cells, a process by which cells break polymers down into monomers with the
addition of water is:
A) Dehydration synthesis
B) Hydrolysis
C) Oxidation
D) Reduction
Answer B: Hydrolysis
Rationale: Hydrolysis uses water to break covalent bonds in polymers.
7. The primary building block of proteins is:
A) Nucleotide
B) Monosaccharide
C) Amino acid
D) Fatty acid
Answer C: Amino acid
Rationale: Amino acids are the monomers of proteins.
8. Cohesion is a property of water in which water molecules tend to stick together.
A) True
B) False
C) Only in ice
D) Only in salt water
Answer A: True
Rationale: Cohesion is due to hydrogen bonding between water molecules.
9. A carbohydrate polymer limited to two monomer units is called a:
A) Monosaccharide
B) Disaccharide
C) Polysaccharide
D) Oligosaccharide
Answer B: Disaccharide
Rationale: Disaccharides consist of two monosaccharides linked together.
10. Smaller than an organelle is a:
A) Cell
B) Molecule
C) Tissue
D) Organ
, Answer B: Molecule
Rationale: The order is atom → molecule → organelle → cell → tissue → organ.
11. Plants extract minerals from soil, so they are considered:
A) Heterotrophs
B) Autotrophs
C) Decomposers
D) Consumers
Answer B: Autotrophs
Rationale: Plants are autotrophs that use photosynthesis to make food.
12. The correct order of organization is:
A) Atom, molecule, organelle, cell, tissue, organ
B) Cell, atom, molecule, tissue, organ
C) Molecule, atom, cell, organ, tissue
D) Organ, tissue, cell, molecule, atom
Answer A: Atom, molecule, organelle, cell, tissue, organ
Rationale: This is the hierarchical organization of living things.
13. The three domains of life are:
A) Bacteria, Archaea, Eukarya
B) Animalia, Plantae, Fungi
C) Prokaryotes, Eukaryotes, Viruses
D) Plants, Animals, Protists
Answer A: Bacteria, Archaea, Eukarya
Rationale: The three domains are Bacteria, Archaea, and Eukarya.
14. Oxygen has an atomic number of 8. An uncharged oxygen atom has how many
electrons in its outer shell?
A) 2
B) *6*
C) 8
D) 4
Answer B: 6
Rationale: Oxygen has 6 valence electrons (needs 2 more to fill its outer shell).
15. A weak bond between water molecules is a:
A) Covalent bond
B) Ionic bond
C) Hydrogen bond
D) Peptide bond
Answer C: Hydrogen bond
Rationale: Hydrogen bonds form between slightly positive H and slightly negative O atoms.
South Western State College) | 150 Practice
Questions & Correct Answers | Complete
Biology Study Guide & Exam Prep
1. What is dehydration synthesis?
A) Formation of a covalent bond between two molecules by loss of water
B) Breakdown of polymers by adding water
C) Transfer of electrons between atoms
D) Movement of water across a membrane
Answer A: Formation of a covalent bond between two molecules by loss of water
Rationale: Dehydration synthesis (condensation) joins monomers by removing water.
2. What is a consumer/heterotroph?
A) Organism eating another organism for energy/nutrients
B) Organism that makes its own food
C) Organism that decomposes dead matter
D) Organism that photosynthesizes
Answer A: Organism eating another organism for energy/nutrients
Rationale: Heterotrophs obtain energy by consuming other organisms.
3. What is a primary producer/autotroph?
A) Organism that extracts energy and nutrients from the nonliving environment
B) Organism that eats other organisms
C) Organism that decomposes dead matter
D) Organism that lives in water
Answer A: Organism that extracts energy and nutrients from the nonliving environment
Rationale: Autotrophs synthesize organic compounds from inorganic sources.
4. The atomic number of an element is the number of:
A) Neutrons in the nucleus
B) Protons in the nucleus
C) Electrons in the outer shell
D) Protons and neutrons combined
Answer B: Protons in the nucleus
Rationale: Atomic number equals the number of protons, defining the element.
5. In a covalent bond, atoms:
A) Transfer electrons
,B) Share electrons
C) Attract opposite charges
D) Form hydrogen bonds
Answer B: Share electrons
Rationale: Covalent bonds involve sharing electron pairs between atoms.
6. In living cells, a process by which cells break polymers down into monomers with the
addition of water is:
A) Dehydration synthesis
B) Hydrolysis
C) Oxidation
D) Reduction
Answer B: Hydrolysis
Rationale: Hydrolysis uses water to break covalent bonds in polymers.
7. The primary building block of proteins is:
A) Nucleotide
B) Monosaccharide
C) Amino acid
D) Fatty acid
Answer C: Amino acid
Rationale: Amino acids are the monomers of proteins.
8. Cohesion is a property of water in which water molecules tend to stick together.
A) True
B) False
C) Only in ice
D) Only in salt water
Answer A: True
Rationale: Cohesion is due to hydrogen bonding between water molecules.
9. A carbohydrate polymer limited to two monomer units is called a:
A) Monosaccharide
B) Disaccharide
C) Polysaccharide
D) Oligosaccharide
Answer B: Disaccharide
Rationale: Disaccharides consist of two monosaccharides linked together.
10. Smaller than an organelle is a:
A) Cell
B) Molecule
C) Tissue
D) Organ
, Answer B: Molecule
Rationale: The order is atom → molecule → organelle → cell → tissue → organ.
11. Plants extract minerals from soil, so they are considered:
A) Heterotrophs
B) Autotrophs
C) Decomposers
D) Consumers
Answer B: Autotrophs
Rationale: Plants are autotrophs that use photosynthesis to make food.
12. The correct order of organization is:
A) Atom, molecule, organelle, cell, tissue, organ
B) Cell, atom, molecule, tissue, organ
C) Molecule, atom, cell, organ, tissue
D) Organ, tissue, cell, molecule, atom
Answer A: Atom, molecule, organelle, cell, tissue, organ
Rationale: This is the hierarchical organization of living things.
13. The three domains of life are:
A) Bacteria, Archaea, Eukarya
B) Animalia, Plantae, Fungi
C) Prokaryotes, Eukaryotes, Viruses
D) Plants, Animals, Protists
Answer A: Bacteria, Archaea, Eukarya
Rationale: The three domains are Bacteria, Archaea, and Eukarya.
14. Oxygen has an atomic number of 8. An uncharged oxygen atom has how many
electrons in its outer shell?
A) 2
B) *6*
C) 8
D) 4
Answer B: 6
Rationale: Oxygen has 6 valence electrons (needs 2 more to fill its outer shell).
15. A weak bond between water molecules is a:
A) Covalent bond
B) Ionic bond
C) Hydrogen bond
D) Peptide bond
Answer C: Hydrogen bond
Rationale: Hydrogen bonds form between slightly positive H and slightly negative O atoms.
