Biology (Grades 9–10) Midterm — Quick Check, Units 1–3
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Free printable Biology midterm (Grades 9–10): 10 multiple-choice questions covering Biochemistry, Cells & Cell Transport, Photosynthesis & Cellular Respiration. Answer key included — customize it in the Midterm Maker.
Biology (Grades 9–10) Midterm — Quick Check, Units 1–3
Name: Date: Period:
Directions: Read each question carefully and choose the best answer.
Covers: Biochemistry · Cells & Cell Transport · Photosynthesis & Cellular Respiration
Part 1: Multiple Choice
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Simple carbohydrates are made of which elements?
- A. Carbon, oxygen, and phosphorus
- B. Carbon, hydrogen, and nitrogen
- C. Carbon, hydrogen, and oxygen
- D. Nitrogen, oxygen, and sulfur
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Glucose belongs to which class of macromolecules?
- A. Proteins
- B. Lipids
- C. Nucleic acids
- D. Carbohydrates
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How do enzymes speed up chemical reactions?
- A. By being used up as reactants
- B. By raising the temperature of the cell
- C. By lowering the activation energy
- D. By increasing the activation energy
-
An animal cell is placed in a solution saltier than its cytoplasm. What happens?
- A. Salt leaves the cell and it bursts
- B. Nothing changes in the cell
- C. Water leaves the cell and it shrinks
- D. Water enters the cell and it swells
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What is a key difference between eukaryotic and prokaryotic cells?
- A. Eukaryotic cells lack ribosomes
- B. Prokaryotic cells lack DNA
- C. Prokaryotic cells have mitochondria
- D. Eukaryotic cells have a membrane-bound nucleus
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Diffusion is the movement of particles in which direction?
- A. From low concentration to high concentration
- B. Only into the nucleus
- C. From high concentration to low concentration
- D. Only when ATP is used
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When oxygen is scarce, human muscle cells carry out fermentation that produces what?
- A. Oxygen
- B. Ethanol
- C. Lactic acid
- D. Glucose
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Which statement correctly relates photosynthesis and cellular respiration?
- A. The products of one are the reactants of the other
- B. Both processes release oxygen
- C. Plants carry out photosynthesis but not respiration
- D. Animals carry out both processes
-
Which stage of aerobic cellular respiration produces the most ATP?
- A. Fermentation
- B. Glycolysis
- C. Krebs cycle
- D. Electron transport chain
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The oxygen gas released during photosynthesis comes from which molecule?
- A. Water
- B. Chlorophyll
- C. Carbon dioxide
- D. Glucose
Answer Key — Biology (Grades 9–10) Midterm — Quick Check, Units 1–3
- C — Carbon, hydrogen, and oxygen Sugars such as glucose (C₆H₁₂O₆) contain only C, H, and O.
- D — Carbohydrates Glucose is a simple sugar, a carbohydrate monomer.
- C — By lowering the activation energy Enzymes lower the energy barrier and are not consumed.
- C — Water leaves the cell and it shrinks In a hypertonic solution, water moves out by osmosis.
- D — Eukaryotic cells have a membrane-bound nucleus Prokaryotes have DNA in a nucleoid region, not a nucleus.
- C — From high concentration to low concentration Particles spread out down their concentration gradient.
- C — Lactic acid Lactic acid fermentation regenerates NAD⁺ so glycolysis can continue.
- A — The products of one are the reactants of the other Plants and animals respire; plants also photosynthesize.
- D — Electron transport chain The electron transport chain drives ATP synthase to make most ATP.
- A — Water Water is split in the light-dependent reactions, releasing O₂.