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Bio Unit One
| Question | Answer |
|---|---|
| What is the primary function of the mitochondria in a cell? | To produce energy |
| Which organelle would be most important for a cell that needs to produce large amounts of protein? | Rough endoplasmic reticulum with many ribosomes |
| What is the primary role of the nucleus in maintaining homeostasis? | To regulate gene expression and control cellular activities |
| What is the function of chloroplasts in plant cells? | To perform photosynthesis and produce glucose |
| Why is it important to replicate an experiment multiple times in the scientific method? | To ensure results are reliable and not due to random chance or error |
| What is the function of the Golgi apparatus? | To modify, package, and ship proteins and lipids to their destinations |
| How does the cell membrane help maintain homeostasis? | By controlling what substances enter and exit the cell through selective permeability |
| Which process allows a cell to maintain a stable internal environment despite external changes? | Homeostasis |
| In a scientific experiment, what is the independent variable? | The factor that is deliberately changed or manipulated by the experimenter |
| Which step of the scientific method involves making an educated guess about the outcome of an experiment? | Forming a Hypothesis |
| In the scientific method, what is the purpose of a control group in an experiment? | To provide a baseline comparison for the experimental group |
| Which organelle is responsible for breaking down and recycling damaged or old cell components? | Lysosome |
| What is the main function of the endoplasmic reticulum? | To synthesize proteins and lipids for transport throughout the cell |
| Which statement best describes the relationship between variables in the scientific method? | The independent variable is manipulated to observe changes in the dependent variable |
| What structure provides rigid support to plant cells? | Cell Wall |
| Which organelle is primarily used for storage of water, food, and waste? | Vacuole |
| What is the jelly-like material that fills much of the cell? | Cytoplasm |
| Which organelle is directly involved in making proteins and can be found attached to the rough ER? | Ribosome |
| Which organelle contains digestive enzymes that break down waste and worn-out cell parts? | Lysosome |
| Homeostasis means that the body keeps everything exactly the same all the time. True or False. | False |
| The mitochondria are only important in animal cells because plants get their energy from the sun. True or False | False |
| A student designs an experiment to test whether music affects plant growth. However, one plant receives more sunlight than the other. This test is: | Unreliable |
| difference between the cell membrane and the cell wall. | a cell wall is a rigid outer layer that provides structural support, while a cell membrane is a flexible barrier that controls what moves in and out of the cell |
| A scientist discovers a cell with chloroplasts, a cell wall, and a large central vacuole. What type of cell is it? | Plant |
| A muscle cell requires large amounts of energy to function. Which organelle would you expect the muscle cell to contain many of? | mitochondria |
| Why would you expect a muscle cell to contain many mitochondria? | it needs a large amount of energy for movement. |
| A cell's lysosomes stop functioning. | Waste products and toxic materials build up inside the cell |
| Each organelle works independently and doesn't really depend on the other organelles. True or False? | False |
| A plant is placed in a dark room for several days. Which organelle's activity would be most directly affected? | Chloroplasts |
| A cell produces a protein that needs to be exported outside the cell. Which sequence best describes the pathway the protein would follow? | Ribosome → rough ER → Golgi apparatus → cell membrane |
| Why is it important to control variables in an experiment? | to ensure that the results are accurate and reliable |
| A scientist records the height of a plant every day for two weeks. Is the plant height qualitative or quantitative data? | Quantitative |
| Which organelle is known as the "powerhouse of the cell"? | Mitochondria |
| Which organelle makes proteins? | Ribosome |
| What is the main function of the cell membrane? | Regulating the movement of substances |
| Which organelle is responsible for photosynthesis? | Chloroplast |
| Explain why mitochondria are important to both plant and animal cells. | They produce energy |
| A cell has a nucleus, mitochondria, cell wall, chloroplasts, and a large central vacuole. Is it most likely a Plant or animal | Plant |
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