ASVAB (Armed Services Vocational Aptitude Battery)General Science (GS)Hard
A biologist is studying a cell and observes that it contains mitochondria, ribosomes, and a cell membrane, but lacks a cell wall and chloroplasts. This cell is most likely from a(n):
- ABacterium
- BFungus
- CAnimal
- DPlant
Show answer & explanationAnswer & explanation
Correct answer: C. Animal
Animal cells are eukaryotic, possessing mitochondria, ribosomes, and a cell membrane. Unlike plant and fungal cells, animal cells lack a cell wall, and unlike plant cells, they lack chloroplasts.
Why the other options are wrong
- A. Bacterial cells (prokaryotes) lack mitochondria and a true nucleus, and also have a cell wall.
- B. Fungal cells have a cell wall (chitin) but lack chloroplasts.
- D. Plant cells have chloroplasts and a cell wall.
Eukaryotic Cell Organelles
Specialized structures within eukaryotic cells that perform specific functions.
- Mitochondria: Powerhouse, cellular respiration.
- Ribosomes: Protein synthesis.
- Cell Membrane: Regulates passage of substances.
- Cell Wall: Structural support (plants, fungi, some protists).
- Chloroplasts: Photosynthesis (plants, algae).
Memory trick: No wall, no green, just animal scene.