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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.

Select a test

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

1. Test

Arkansas ATLAS Biology EOC Practice Questions

A 10-question Arkansas ATLAS Biology EOC practice set on cells, transport, and homeostasis, 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

Which cell structure contains DNA and regulates many cell activities?

Please select an answer first.

Correct answer: A

The correct answer is The nucleus.

  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: The nucleus stores genetic material and helps control gene expression and cell activities in eukaryotic cells.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

The nucleus stores genetic material and helps control gene expression and cell activities in eukaryotic cells.

2. QuestionMultiple choice

What is the main function of the cell membrane?

Please select an answer first.

Correct answer: B

The correct answer is It regulates what enters and leaves the cell.

  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: The selectively permeable cell membrane controls movement of substances into and out of the cell.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

The selectively permeable cell membrane controls movement of substances into and out of the cell.

3. QuestionMultiple choice

What is the main function of ribosomes?

Please select an answer first.

Correct answer: C

The correct answer is They assemble proteins.

  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: Ribosomes use information from messenger RNA to assemble amino acids into proteins.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Ribosomes use information from messenger RNA to assemble amino acids into proteins.

4. QuestionMultiple choice

A cell is placed in a solution with a higher solute concentration than the cell. What will most likely happen to the cell water?

Please select an answer first.

Correct answer: D

The correct answer is Water will move out of the cell by osmosis.

  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: Water moves across a selectively permeable membrane toward the side with higher solute concentration.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Water moves across a selectively permeable membrane toward the side with higher solute concentration.

5. QuestionMultiple choice

Which process requires cellular energy to move a substance against its concentration gradient?

Please select an answer first.

Correct answer: A

The correct answer is Active transport.

  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: Active transport uses energy to move substances from lower concentration to higher concentration.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Active transport uses energy to move substances from lower concentration to higher concentration.

6. QuestionMultiple choice

Why are cells generally small rather than extremely large?

Please select an answer first.

Correct answer: B

The correct answer is A small cell has a more favorable surface area to volume ratio for exchange.

  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: A higher surface area to volume ratio helps a cell obtain materials and remove waste efficiently.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

A higher surface area to volume ratio helps a cell obtain materials and remove waste efficiently.

7. QuestionMultiple choice

What is the main role of enzymes in cells?

Please select an answer first.

Correct answer: C

The correct answer is They speed up chemical reactions by lowering activation 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: Enzymes act as biological catalysts and are not permanently consumed during the reaction.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Enzymes act as biological catalysts and are not permanently consumed during the reaction.

8. QuestionMultiple choice

What does homeostasis mean in biology?

Please select an answer first.

Correct answer: D

The correct answer is Maintaining relatively stable internal conditions.

  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: Homeostasis allows organisms to keep internal conditions within a functional range despite external changes.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Homeostasis allows organisms to keep internal conditions within a functional range despite external changes.

9. QuestionMultiple choice

Which body response helps maintain a stable internal temperature when the body becomes too warm?

Please select an answer first.

Correct answer: A

The correct answer is Sweating increases heat loss.

  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: Sweating and evaporation help transfer thermal energy away from the body.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Sweating and evaporation help transfer thermal energy away from the body.

10. QuestionMultiple choice

Why do specialized cells in a multicellular organism have different structures?

Please select an answer first.

Correct answer: B

The correct answer is Different structures support different functions.

  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: Cell specialization allows groups of cells to perform distinct roles while sharing the organism genome.
  3. Check the claim: Make sure the answer matches the biological process, model, observation, or data described.

Cell specialization allows groups of cells to perform distinct roles while sharing the organism genome.

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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.