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BIOS 255 FINAL EXAM 1 (Latest Update 2026/ 2027) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A – Chamberlain

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BIOS 255 FINAL EXAM 1 (Latest Update 2026/ 2027) Anatomy and Physiology IV with Lab | Questions & Answers | 100% Correct | Grade A – Chamberlain

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BIOS 255 FINAL EXAM 1 (Latest Update
2026/ 2027) Anatomy and Physiology IV
with Lab | Questions & Answers | 100%
Correct | Grade A – Chamberlain


1. The study of the structure of body parts is called:
r. r. r. r. r. r. r. r. r.




A. Physiology
r.




B. Anatomy
r.




C. Biochemistry
r.




D. Microbiology
r.




Correct Answer: B r. r.




Rationale: Anatomy focuses on the structure and relationships of
r. r. r. r. r. r. r. r.




body parts.
r. r.




2. The study of body functions is called:
r. r. r. r. r. r. r.




A. Anatomy
r.




B. Physiology
r.




C. Pathology
r.




D. Histology
r.




Correct Answer: B r. r.




Rationale: Physiology studies the functions of organs and systems.
r. r. r. r. r. r. r. r.

,3. Which organ system is responsible for transporting oxygen
r. r. r. r. r. r. r. r.




and nutrients?
r. r.




A. Circulatory system
r. r.




B. Nervous system
r. r.




C. Skeletal system
r. r.




D. Endocrine system
r. r.




Correct Answer: A r. r.




Rationale: Blood circulates oxygen, nutrients, and waste products.
r. r. r. r. r. r. r.




4. The basic unit of life is:
r. r. r. r. r. r.




A. Atom
r.




B. Molecule
r.




C. Cell
r.




D. Tissue r.




Correct Answer: C r. r.




Rationale: Cells are the smallest independent living units.
r. r. r. r. r. r. r.




5. Prokaryotic cells lack:
r. r. r.




A. DNAr.




B. Nucleus
r.




C. Ribosomes
r.




D. Plasma membrane
r. r.




Correct Answer: B r. r.




Rationale: Prokaryotes have a nucleoid region but no membrane-
r. r. r. r. r. r. r. r.




bound nucleus. r.

,6. Eukaryotic cells contain:
r. r. r.




A. Nucleus
r.




B. Nucleoid
r.




C. Capsule
r.




D. Endospore
r.




Correct Answer: A r. r.




Rationale: DNA is enclosed within a nucleus in eukaryotes.
r. r. r. r. r. r. r. r.




7. The plasma membrane is primarily composed of:
r. r. r. r. r. r. r.




A. Lipids and proteins
r. r. r.




B. Carbohydrates only
r. r.




C. Nucleic acids
r. r.




D. Minerals
r.




Correct Answer: A r. r.




Rationale: The phospholipid bilayer with embedded proteins
r. r. r. r. r. r.




regulates transport.
r. r.




8. Mitochondria function to:
r. r. r.




A. Produce ATP
r. r.




B. Digest macromolecules
r. r.




C. Synthesize proteins
r. r.




D. Store lipids
r. r.




Correct Answer: A r. r.




Rationale: Cellular respiration converts glucose into ATP.
r. r. r. r. r. r.

, 9. Ribosomes function in:
r. r. r.




A. Protein synthesis
r. r.




B. Lipid synthesis
r. r.




C. DNA replication
r. r.




D. ATP production
r. r.




Correct Answer: A r. r.




Rationale: Ribosomes translate mRNA into polypeptides.
r. r. r. r. r.




10. Smooth endoplasmic reticulum (ER) synthesizes:
r. r. r. r. r.




A. Lipids
r.




B. Proteins
r.




C. DNAr.




D. RNA r.




Correct Answer: A r. r.




Rationale: Smooth ER is involved in lipid metabolism and
r. r. r. r. r. r. r. r.




detoxification.
r.




11. Rough ER is studded with:
r. r. r. r. r.




A. Ribosomes
r.




B. DNAr.




C. Lysosomes
r.




D. Mitochondria
r.




Correct Answer: A r. r.




Rationale: Ribosomes produce proteins for export.
r. r. r. r. r.

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