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science book vc
Question | Answer |
---|---|
Virus | A tiny particle that can reproduce only inside the cells of living things. |
Bacteria | Tiny one celled organisms, some of which can cause diseases. |
Cell | The basic unit of a living organism. |
Cell membrane | A thin layer that makes up the outside of the cell and controls what enters and leaves it. |
Nucleus | The cell part that controls the cell's activities. |
Cytoplasm | Jellylike material that fills most of a cell. |
Cell wall | A stiff outer layer that helps keep plant cells firm. |
Chloroplast | The green cell part in plant cells that traps and uses light energy. |
Classify | To arrange in groups using a system. |
Kingdom | The largest group into which an organism is classified. |
Genus | A group of similar species. |
Species | A group of organisms of only one kind that can interbreed in nature. |
Invertebrate | An animal that has no backbone. |
Vertebrate | An animal with a backbone. |
Mammal | An animal that has hair or fur and feeds its young with milk. |
Vascular plant | A plant with long tubes inside that carry food and water to all the parts of the plant. |
Egg cell | A cell that can join with a sperm cell to form a new individual. |
Sperm cell | A cell that can join with an egg cell to form a new individual. |