Grade 8 Biology Principles Review
A worksheet covering fundamental biology principles for 8th-grade science students, including cell structure, classification, and basic life processes.
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Grade 8 Biology Principles Review
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Date:
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Read each question carefully and answer to the best of your ability. Show all your work for short answer questions.
1. Which of the following is considered the basic unit of life?
Organ
Tissue
Cell
Molecule
2. Which organelle is responsible for generating most of the energy a cell needs to function?
Nucleus
Mitochondria
Chloroplast
Ribosome
3. The process by which plants use sunlight to synthesize foods from carbon dioxide and water is called .
4. All living organisms are composed of one or more .
5. Label the following parts of the animal cell:
A.
B.
C.
D.
6. Explain the main difference between prokaryotic and eukaryotic cells.
7. Viruses are considered living organisms because they can reproduce on their own.
True
False
8. All plants are autotrophs, meaning they produce their own food.
True
False
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