Cell Parts and Functions - Middle School Life Science
- What is the primary function of ribosomes in a cell model?
- Build proteins. Site of protein synthesis by translating mRNA into amino acid chains.
- Which cell part is best modeled as a "post office" that packages and ships materials?
- Golgi apparatus. Processes and labels proteins for delivery like mail sorting.
- What is the primary function of the nucleus in a cell model?
- Stores DNA and directs cell activities. Contains genetic material that controls all cellular functions.
- Which option best matches a cell model: "packaging and shipping center"?
- Golgi apparatus. Modifies and packages proteins like a shipping department.
- What is the primary function of mitochondria in a cell model?
- Releases energy by cellular respiration. Breaks down glucose to produce ATP, the cell's energy currency.
- Identify the organelle that functions like a "protein factory" in a cell model.
- Ribosome. Site of protein synthesis using genetic instructions.
- What is the primary function of the vacuole in a cell model?
- Stores water, nutrients, and wastes; helps plant turgor. Large in plant cells, maintains pressure for cell rigidity.
- What is the primary function of vesicles in a cell model?
- Transports materials within or out of the cell. Small membrane sacs that bud off from organelles for transport.
- What is the primary function of the cell wall in a cell model?
- Provides rigid support and protection. Made of cellulose in plants, gives shape and prevents bursting.
- What is the primary function of the cytoplasm in a cell model?
- Jelly-like fluid that holds organelles and supports reactions. Provides a medium for chemical reactions and molecular transport.
- What is the primary function of nucleolus in a cell model?
- Makes ribosomes. Dense region within nucleus where ribosomal RNA is synthesized.
- What is the primary function of the cell membrane in a cell model?
- Controls what enters and leaves the cell. Acts as a selective barrier using its phospholipid bilayer structure.
- What is the primary function of mitochondria in a cell model?
- Produce ATP energy by cellular respiration. Break down glucose to generate usable energy for the cell.
- What is the primary function of the large central vacuole in plant cells?
- Stores water and helps maintain turgor pressure. Pushes against cell wall to keep plant cells firm and upright.
- What is the primary function of chloroplasts in a cell model?
- Uses sunlight to make sugar by photosynthesis. Contains chlorophyll to capture light energy for glucose production.
- What is the primary function of vesicles in a cell model?
- Carry materials within the cell or to the cell membrane. Small membrane sacs that transport substances between organelles.
- What is the primary function of the cell wall in a cell model?
- Provides rigid support and protection outside the membrane. Made of cellulose in plants, gives structural strength.
- Identify the organelle that functions like a "control center" in a cell model.
- Nucleus. Contains DNA that regulates all cell activities.
- What is the primary function of the nucleus in a cell model?
- Controls cell activities and stores DNA. Contains genetic material that directs all cellular functions.
- What is the primary function of ribosomes in a cell model?
- Build proteins. Link amino acids together following mRNA instructions.
- What is the primary function of lysosomes in a cell model?
- Breaks down food, wastes, and old cell parts. Contains digestive enzymes to recycle cellular materials.
- Which cell part is best modeled as a "security gate" controlling entry and exit?
- Cell membrane. Its selective permeability controls molecular traffic like a gate.
- What is the primary function of cytoskeleton in a cell model?
- Gives shape, support, and helps organelle movement. Network of protein fibers providing structural framework.
- Which option best matches a cell model: "storage tank that helps plant firmness"?
- Central vacuole. Large vacuole in plants stores water to maintain turgor pressure.
- What is the primary function of the Golgi apparatus in a cell model?
- Modifies, sorts, and packages proteins for transport. Receives proteins from ER and prepares them for export.
- What is the primary function of the nucleolus in a cell model?
- Makes ribosomes. Dense region within nucleus where ribosomal RNA is synthesized.
- What is the primary function of the Golgi apparatus in a cell model?
- Modifies, sorts, and packages proteins for transport. Adds tags to proteins directing them to their final destination.
- What is the primary function of the cell membrane in a cell model?
- Controls what enters and leaves the cell. Acts as a selective barrier using its phospholipid bilayer structure.
- What is the primary function of lysosomes in a cell model?
- Digest and recycle wastes and worn-out cell parts. Contain digestive enzymes that break down cellular debris.
- What is the primary function of centrioles in an animal cell model?
- Helps organize cell division. Form spindle fibers that separate chromosomes during mitosis.
- What is the primary function of vacuoles in a cell model?
- Stores water, food, and wastes. Membrane-bound sacs that compartmentalize materials in cells.
- Which cell part is best modeled as a "solar panel" that captures light to make sugar?
- Chloroplast. Converts light energy to chemical energy like solar panels to electricity.
- Which cell part is best modeled as a "power plant" that releases usable energy?
- Mitochondria. Converts chemical energy into ATP like a power plant generates electricity.
- What is the primary function of the cytoplasm in a cell model?
- Jelly-like fluid that holds organelles and supports reactions. Provides the aqueous environment where cellular processes occur.
- What is the primary function of centrioles in a cell model of an animal cell?
- Help organize cell division by moving chromosomes. Form spindle fibers to separate chromosomes during mitosis.
- What is the primary function of the endoplasmic reticulum in a cell model?
- Transports materials; rough ER helps make proteins. Network of membranes; smooth ER makes lipids, rough has ribosomes.
- What is the primary function of chloroplasts in a cell model?
- Use sunlight to make sugars by photosynthesis. Contain chlorophyll to capture light energy for glucose production.
- Identify the organelle that functions like a "power plant" in a cell model.
- Mitochondrion. Has double membrane and produces ATP through respiration.