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Arkansas ATLAS · Biology EOC · Science

Arkansas ATLAS Biology EOC Practice Test

Build Biology Arkansas ATLAS EOC readiness with five focused 10-question practice sets covering cells, energy, genetics, evolution, ecology, biological systems, and scientific evidence.

Arkansas ATLAS Biology EOC practice sets

This Arkansas ATLAS Biology EOC Practice Test page provides five short practice sets with 10 original multiple-choice questions each. The sets support supplemental review of cells, transport, homeostasis, energy, genetics, evolution, ecology, biodiversity, and biological evidence.

Biology skills covered

  • Cell structures, membrane transport, enzymes, homeostasis, specialization, and biological organization
  • Photosynthesis, cellular respiration, ATP, fermentation, chloroplasts, mitochondria, and limiting factors
  • DNA, RNA, mutations, inheritance, meiosis, mitosis, karyotypes, and genetic variation
  • Natural selection, adaptation, common ancestry, fossils, speciation, artificial selection, and biodiversity
  • Food webs, energy flow, carrying capacity, interactions, nutrient cycles, invasive species, variables, and evidence

How to use this page

Complete one 10-question set at a time. Identify the biological process, connect evidence to the model, and review the explanation for every missed or guessed answer.

This is supplemental State Test Practice, State Assessment Practice, and Standardized Test Practice. It does not replace current Arkansas Department of Education ATLAS guidance, official blueprints, accommodations, or testing schedules.

For the broader Arkansas assessment hub, visit Arkansas State Assessments.

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5 Tests
1. Test2. Test3. Test4. Test5. Test

2. Test

Arkansas ATLAS Biology EOC Practice Questions

A 10-question Arkansas ATLAS Biology EOC practice set on energy, photosynthesis, and respiration, with answers and explanations.

Read each biology scenario carefully, choose one answer, and review the explanation after responding.

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

What is the main purpose of photosynthesis?

Please select an answer first.

Correct answer: A

The correct answer is To store light energy in the chemical energy of glucose.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Photosynthesis uses light energy to build glucose from carbon dioxide and water.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Photosynthesis uses light energy to build glucose from carbon dioxide and water.

2. QuestionMultiple choice

Which substances are reactants in photosynthesis?

Please select an answer first.

Correct answer: B

The correct answer is Carbon dioxide and water.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Plants use carbon dioxide and water as reactants, with light energy, to produce glucose and oxygen.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Plants use carbon dioxide and water as reactants, with light energy, to produce glucose and oxygen.

3. QuestionMultiple choice

Where does photosynthesis occur in a plant cell?

Please select an answer first.

Correct answer: C

The correct answer is In chloroplasts.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Chloroplasts contain chlorophyll and the structures that capture light for photosynthesis.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Chloroplasts contain chlorophyll and the structures that capture light for photosynthesis.

4. QuestionMultiple choice

What is the main purpose of cellular respiration?

Please select an answer first.

Correct answer: D

The correct answer is To transfer energy from glucose to ATP.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Cellular respiration breaks down glucose and transfers usable energy to ATP.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Cellular respiration breaks down glucose and transfers usable energy to ATP.

5. QuestionMultiple choice

Which organelle is the main site of aerobic cellular respiration?

Please select an answer first.

Correct answer: A

The correct answer is The mitochondrion.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Mitochondria carry out most aerobic cellular respiration in eukaryotic cells.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Mitochondria carry out most aerobic cellular respiration in eukaryotic cells.

6. QuestionMultiple choice

Why is ATP useful to cells?

Please select an answer first.

Correct answer: B

The correct answer is It can transfer usable energy for cellular work.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: ATP provides a readily accessible energy source for transport, synthesis, movement, and other cell work.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

ATP provides a readily accessible energy source for transport, synthesis, movement, and other cell work.

7. QuestionMultiple choice

What may happen in muscle cells when oxygen is limited during intense activity?

Please select an answer first.

Correct answer: C

The correct answer is Lactic acid fermentation can provide a short-term pathway for ATP production.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Fermentation allows glycolysis to continue when oxygen is limited, although it produces less ATP than aerobic respiration.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Fermentation allows glycolysis to continue when oxygen is limited, although it produces less ATP than aerobic respiration.

8. QuestionMultiple choice

How are photosynthesis and cellular respiration related?

Please select an answer first.

Correct answer: D

The correct answer is The products of one process can serve as reactants for the other.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Photosynthesis produces glucose and oxygen, which respiration can use; respiration produces carbon dioxide and water, which photosynthesis can use.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Photosynthesis produces glucose and oxygen, which respiration can use; respiration produces carbon dioxide and water, which photosynthesis can use.

9. QuestionMultiple choice

What is the role of chlorophyll in photosynthesis?

Please select an answer first.

Correct answer: A

The correct answer is It absorbs light energy.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: Chlorophyll absorbs particular wavelengths of light and transfers that energy into the photosynthetic process.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Chlorophyll absorbs particular wavelengths of light and transfers that energy into the photosynthetic process.

10. QuestionMultiple choice

If light intensity increases while other factors remain constant, what may happen to photosynthesis at first?

Please select an answer first.

Correct answer: B

The correct answer is The rate may increase until another factor becomes limiting.

  1. Identify the biology idea: Decide whether the question is about cells, energy, genetics, evolution, ecosystems, body systems, or scientific evidence.
  2. Use the evidence: More light can increase the rate until temperature, carbon dioxide, water, or another condition limits the process.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

More light can increase the rate until temperature, carbon dioxide, water, or another condition limits the process.

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Frequently asked questions about Arkansas ATLAS Biology EOC Practice Test

Which Biology skills are covered?

The page covers cells, transport, homeostasis, energy, genetics, evolution, ecology, biodiversity, body systems, and biological evidence.

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 ATLAS questions?

No. These are original supplemental practice questions. Check the latest Arkansas Department of Education information for official materials, standards, accommodations, and policies.