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Florida State Assessments · Biology 1 EOC

Florida Biology 1 EOC Practice Test

Build Florida Biology 1 readiness with five focused 10-question sets covering cells, energy flow, genetics, evolution, ecology, homeostasis, and scientific investigation.

Florida Biology 1 EOC practice sets

This Florida Biology 1 EOC Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support Biology 1 EOC readiness with cells, homeostasis, energy flow, genetics, DNA, evolution, ecology, populations, scientific investigation, and biological evidence.

Biology 1 skills covered

  • Cell structures, membranes, transport, organelles, enzymes, ATP, cell division, and homeostasis
  • Photosynthesis, cellular respiration, food webs, trophic levels, energy transfer, decomposers, and nutrient cycling
  • DNA, RNA, protein synthesis, heredity, Punnett squares, mutations, meiosis, natural selection, and common ancestry
  • Population growth, carrying capacity, symbiosis, habitat fragmentation, carbon cycling, biodiversity, and conservation
  • Integrated biology reasoning with experimental variables, ecosystem services, evidence, models, and claim-evidence-reasoning explanations

How to use this page

Complete one 10-question set at a time. Use the model, data, or biological process in each question as evidence. Review the explanation after each response and note whether the missed skill involves structure, energy, inheritance, ecology, or investigation.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice for Florida Biology 1 EOC preparation. It does not replace current Florida Department of Education guidance, official assessment materials, accommodations, or testing policies.

Review the Florida State Assessments hub, the Florida State Test Practice page, or the official Florida FAST and B.E.S.T. assessment information for current program details.

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Florida Biology 1 EOC Practice Questions

A 10-question Florida Biology 1 EOC practice set on genetics, dna, and evolution, with answers and explanations.

Read each biology situation, model, or data description carefully, choose the best answer, and review the explanation after responding.

10 Questions
0/10 Questions0 %
Correct 0
Incorrect 0
Unanswered 10
1. QuestionMultiple choice

What is the primary role of DNA in cells?

Please select an answer first.

Correct answer: A

The correct answer is It stores genetic information..

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: DNA stores the instructions used to build and maintain an organism.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

DNA stores the instructions used to build and maintain an organism.

2. QuestionMultiple choice

A segment of DNA has the bases A, T, C, and G. Which base pairs with adenine?

Please select an answer first.

Correct answer: B

The correct answer is Thymine.

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: In DNA, adenine pairs with thymine.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

In DNA, adenine pairs with thymine.

3. QuestionMultiple choice

What is the function of messenger RNA during protein synthesis?

Please select an answer first.

Correct answer: C

The correct answer is It carries genetic instructions from DNA to a ribosome..

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: Messenger RNA carries the code from DNA to ribosomes for protein assembly.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

Messenger RNA carries the code from DNA to ribosomes for protein assembly.

4. QuestionMultiple choice

If a heterozygous tall plant is represented by Tt, which allele combination is homozygous recessive?

Please select an answer first.

Correct answer: D

The correct answer is tt.

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: A homozygous recessive genotype has two recessive alleles, represented by tt.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

A homozygous recessive genotype has two recessive alleles, represented by tt.

5. QuestionMultiple choice

Two heterozygous parents for a recessive trait have genotypes Aa and Aa. What is the probability of an offspring with aa?

Please select an answer first.

Correct answer: A

The correct answer is 25 percent.

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: The possible genotypes are AA, Aa, Aa, and aa, so one of four is aa.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

The possible genotypes are AA, Aa, Aa, and aa, so one of four is aa.

6. QuestionMultiple choice

A mutation changes one DNA base but does not change the amino acid produced. What type of mutation is this?

Please select an answer first.

Correct answer: B

The correct answer is A silent mutation.

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: A silent mutation changes a codon without changing the resulting amino acid.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

A silent mutation changes a codon without changing the resulting amino acid.

7. QuestionMultiple choice

Which process produces sex cells with half the usual number of chromosomes?

Please select an answer first.

Correct answer: C

The correct answer is Meiosis.

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: Meiosis produces haploid gametes for sexual reproduction.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

Meiosis produces haploid gametes for sexual reproduction.

8. QuestionMultiple choice

A population of bacteria includes a few individuals resistant to an antibiotic. After treatment, most surviving bacteria are resistant. What best explains this result?

Please select an answer first.

Correct answer: D

The correct answer is The antibiotic selected resistant bacteria that survived and reproduced..

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: Resistant bacteria survived treatment and passed the trait to offspring.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

Resistant bacteria survived treatment and passed the trait to offspring.

9. QuestionMultiple choice

Which evidence supports the idea that two species share a common ancestor?

Please select an answer first.

Correct answer: A

The correct answer is They have similar bone structures with different functions..

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: Homologous structures can reveal inherited similarities from a common ancestor.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

Homologous structures can reveal inherited similarities from a common ancestor.

10. QuestionMultiple choice

Why can a change in DNA affect an organisms traits?

Please select an answer first.

Correct answer: B

The correct answer is DNA changes can alter the proteins produced by cells..

  1. Identify the biology concept: Read the process, model, data, or organism interaction carefully and identify the biological relationship being tested.
  2. Choose the best answer: A change in a gene can change a protein and sometimes affect a phenotype.
  3. Check the evidence: Make sure the answer matches the structure, process, energy flow, inheritance pattern, or evidence described in the question.

A change in a gene can change a protein and sometimes affect a phenotype.

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Frequently asked questions about Florida Biology 1 EOC Practice

What Biology 1 skills are covered?

The practice sets cover cells, membranes, organelles, energy flow, photosynthesis, cellular respiration, genetics, DNA, evolution, ecology, populations, homeostasis, and scientific investigation.

How many questions are included?

There are five practice sets with 10 questions each, for 50 questions in total. Each set can be completed separately.

Are these official Biology 1 EOC questions?

No. These are original supplemental practice questions. Check the latest Florida Department of Education assessment information for current Biology 1 EOC details, materials, accommodations, and policies.