BSC 2027 Exam 1 | 200+ Questions & Correct
Answers | Detailed Rationales | Complete
Biology Exam Prep
1. Which of the following is an attribute of living things?
A) They must be capable of acquiring adaptations through evolution.
B) They must all require oxygen.
C) They must all be multicellular.
D) They must all photosynthesize.
Answer: A
Rationale: Evolution and adaptation are universal attributes of living things. Not all organisms require
oxygen or are multicellular.
2. Which of the following is NOT an attribute of living things?
A) Ability to reproduce
B) *All living things require oxygen
C) Response to stimuli
D) Ability to evolve
Answer: B
Rationale: Many organisms (anaerobes) live without oxygen, so oxygen is not a universal requirement.
3. Which of the following statements best describes the phenomenon of "emergence"?
A) Living things are made of cells.
B) *The whole is greater than the sum of the parts.
C) All life requires energy.
D) Organisms evolve over time.
,Answer: B
Rationale: Emergence refers to novel properties arising from interactions among components.
4. Which of the following domains is prokaryotic?
A) Eukarya
B) *Archaea
C) Protista
D) Fungi
Answer: B
Rationale: Archaea and Bacteria are prokaryotic domains; Eukarya is eukaryotic.
5. Which type of organisms within the domain Eukarya is composed of organisms that are
generally unicellular?
A) Fungi
B) Plantae
C) *Protists
D) Animalia
Answer: C
Rationale: Protists are primarily unicellular eukaryotes; fungi, plants, and animals are mostly multicellular.
6. Eukaryotic organisms that decompose dead organisms and absorb the nutrients are generally
found in which kingdom?
A) Plantae
B) Animalia
C) *Fungi
D) Protista
Answer: C
Rationale: Fungi are decomposers that absorb nutrients from dead organic matter.
,7. Evolution tends to act at which of the following levels?
A) Individual organism
B) Cell
C) *Population
D) Ecosystem
Answer: C
Rationale: Evolution acts on populations through changes in allele frequencies over generations.
8. Which of the following statements most clearly demonstrates inductive reasoning?
A) *If the animals observed require organic molecules as nutrients, then it can be concluded that all
animals require organic molecules as nutrients.
B) All mammals have hair; therefore, a dog has hair.
C) If it rains, the ground gets wet.
D) A hypothesis is tested by experiment.
Answer: A
Rationale: Inductive reasoning draws general conclusions from specific observations.
9. At which point in a study is a scientific investigator most likely to use deductive reasoning?
A) In making observations
B) *In establishing a test of a hypothesis
C) In forming a hypothesis
D) In publishing results
Answer: B
Rationale: Deductive reasoning predicts specific outcomes from general principles to test hypotheses.
10. Which statement is true regarding essential elements and living organisms?
, A) All organisms require the same essential elements.
B) *Although all forms of life require iron, other elements are required only by certain species.
C) Only carbon and oxygen are essential.
D) Trace elements are never essential.
Answer: B
Rationale: Some elements like iron are universally required; others are species-specific.
11. Consider this statement: Concentrations of trace elements above what is required generally
have no effect on organisms. Which is a valid response?
A) True; trace elements are harmless.
B) *False. Elevated concentrations of some trace elements such as cobalt and chromium can be toxic.
C) True; only macronutrients matter.
D) False; trace elements are never toxic.
Answer: B
Rationale: Some trace elements become toxic at high concentrations.
12. When do hydrogen bonds occur?
A) When atoms share electrons equally
B) *When partial opposite charges on molecules come close enough to attract each other
C) When ions form
D) When covalent bonds break
Answer: B
Rationale: Hydrogen bonds form between a partially positive hydrogen and a partially negative atom (N,
O, F).
13. What is the role of van der Waals interactions in biological molecules?
A) They are strong bonds that hold atoms together.
Answers | Detailed Rationales | Complete
Biology Exam Prep
1. Which of the following is an attribute of living things?
A) They must be capable of acquiring adaptations through evolution.
B) They must all require oxygen.
C) They must all be multicellular.
D) They must all photosynthesize.
Answer: A
Rationale: Evolution and adaptation are universal attributes of living things. Not all organisms require
oxygen or are multicellular.
2. Which of the following is NOT an attribute of living things?
A) Ability to reproduce
B) *All living things require oxygen
C) Response to stimuli
D) Ability to evolve
Answer: B
Rationale: Many organisms (anaerobes) live without oxygen, so oxygen is not a universal requirement.
3. Which of the following statements best describes the phenomenon of "emergence"?
A) Living things are made of cells.
B) *The whole is greater than the sum of the parts.
C) All life requires energy.
D) Organisms evolve over time.
,Answer: B
Rationale: Emergence refers to novel properties arising from interactions among components.
4. Which of the following domains is prokaryotic?
A) Eukarya
B) *Archaea
C) Protista
D) Fungi
Answer: B
Rationale: Archaea and Bacteria are prokaryotic domains; Eukarya is eukaryotic.
5. Which type of organisms within the domain Eukarya is composed of organisms that are
generally unicellular?
A) Fungi
B) Plantae
C) *Protists
D) Animalia
Answer: C
Rationale: Protists are primarily unicellular eukaryotes; fungi, plants, and animals are mostly multicellular.
6. Eukaryotic organisms that decompose dead organisms and absorb the nutrients are generally
found in which kingdom?
A) Plantae
B) Animalia
C) *Fungi
D) Protista
Answer: C
Rationale: Fungi are decomposers that absorb nutrients from dead organic matter.
,7. Evolution tends to act at which of the following levels?
A) Individual organism
B) Cell
C) *Population
D) Ecosystem
Answer: C
Rationale: Evolution acts on populations through changes in allele frequencies over generations.
8. Which of the following statements most clearly demonstrates inductive reasoning?
A) *If the animals observed require organic molecules as nutrients, then it can be concluded that all
animals require organic molecules as nutrients.
B) All mammals have hair; therefore, a dog has hair.
C) If it rains, the ground gets wet.
D) A hypothesis is tested by experiment.
Answer: A
Rationale: Inductive reasoning draws general conclusions from specific observations.
9. At which point in a study is a scientific investigator most likely to use deductive reasoning?
A) In making observations
B) *In establishing a test of a hypothesis
C) In forming a hypothesis
D) In publishing results
Answer: B
Rationale: Deductive reasoning predicts specific outcomes from general principles to test hypotheses.
10. Which statement is true regarding essential elements and living organisms?
, A) All organisms require the same essential elements.
B) *Although all forms of life require iron, other elements are required only by certain species.
C) Only carbon and oxygen are essential.
D) Trace elements are never essential.
Answer: B
Rationale: Some elements like iron are universally required; others are species-specific.
11. Consider this statement: Concentrations of trace elements above what is required generally
have no effect on organisms. Which is a valid response?
A) True; trace elements are harmless.
B) *False. Elevated concentrations of some trace elements such as cobalt and chromium can be toxic.
C) True; only macronutrients matter.
D) False; trace elements are never toxic.
Answer: B
Rationale: Some trace elements become toxic at high concentrations.
12. When do hydrogen bonds occur?
A) When atoms share electrons equally
B) *When partial opposite charges on molecules come close enough to attract each other
C) When ions form
D) When covalent bonds break
Answer: B
Rationale: Hydrogen bonds form between a partially positive hydrogen and a partially negative atom (N,
O, F).
13. What is the role of van der Waals interactions in biological molecules?
A) They are strong bonds that hold atoms together.
