The correct order of biological organization is:

Cell → Tissue → Organ → System

Cell → Organ → Tissue → System

Tissue → Cell → Organ → System

Organ → Cell → Tissue → System

GACE Biology (6–12) (710)

Free GACE Biology (6–12) (710) Practice Questions

10 sample questions for the GACE Biology (6–12) (710), with the correct answer and an explanation for each. No account needed. Try each one before you open the answer.

Sections covered on the exam: Cell Biology — Cell Structure and Functions, Genetics and Evolution, Scientific Inquiry, Processes, Technology, and Society, Organismal Biology, Ecology — Organisms and Environments.

Question 1 · Cell Biology — Cell Structure and Functions
Which subatomic particle determines the chemical properties of an atom?
- A.Proton
- B.Neutron
- C.Electron
- D.Nucleus
Show answer and explanation
Answer: C. Electron
Electrons participate in chemical bonding. Their arrangement determines how atoms interact with others.
Question 2 · Cell Biology — Cell Structure and Functions
A mutation that changes a single nucleotide is called:
- A.Frameshift mutation
- B.Chromosomal mutation
- C.Deletion
- D.Point mutation
Show answer and explanation
Answer: D. Point mutation
A point mutation affects one nucleotide in the DNA sequence.
Question 3 · Genetics and Evolution
Independent assortment occurs during:
- A.Mitosis
- B.Cytokinesis
- C.Meiosis II
- D.Meiosis I
Show answer and explanation
Answer: D. Meiosis I
During meiosis I, homologous chromosomes separate independently, creating genetic variation.
Question 4 · Scientific Inquiry, Processes, Technology, and Society
Which step of the scientific method involves making a prediction?
- A.Observation
- B.Hypothesis
- C.Experiment
- D.Conclusion
Show answer and explanation
Answer: B. Hypothesis
A hypothesis is a testable prediction based on observations.
Question 5 · Organismal Biology
The correct order of biological organization is:
- A.Cell → Tissue → Organ → System
- B.Cell → Organ → Tissue → System
- C.Tissue → Cell → Organ → System
- D.Organ → Cell → Tissue → System
Show answer and explanation
Answer: A. Cell → Tissue → Organ → System
Cells form tissues, tissues form organs, and organs form systems.
Question 6 · Cell Biology — Cell Structure and Functions
Which particle is located outside the nucleus?
- A.Proton
- B.Neutron
- C.Electron
- D.Nucleus
Show answer and explanation
Answer: C. Electron
Electrons occupy orbitals outside the nucleus.
Question 7 · Cell Biology — Cell Structure and Functions
A substitution mutation replaces:
- A.One chromosome
- B.One nucleotide
- C.One protein
- D.One cell
Show answer and explanation
Answer: B. One nucleotide
Substitution mutations involve replacement of a single nucleotide.
Question 8 · Genetics and Evolution
Independent assortment occurs when:
- A.Genes are linked
- B.Chromosomes separate randomly
- C.DNA replicates
- D.Cells divide equally
Show answer and explanation
Answer: B. Chromosomes separate randomly
During meiosis, chromosomes align randomly, leading to independent assortment.
Question 9 · Scientific Inquiry, Processes, Technology, and Society
Which step comes immediately after forming a hypothesis?
- A.Observation
- B.Experiment
- C.Conclusion
- D.Data analysis
Show answer and explanation
Answer: B. Experiment
After forming a hypothesis, it must be tested through experimentation.
Question 10 · Organismal Biology
Which level of organization includes multiple tissues working together?
- A.Organ
- B.Tissue
- C.Cell
- D.System
Show answer and explanation
Answer: A. Organ
An organ is composed of different tissues performing a specific function.

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