| A | B |
|---|
| Tiny cell structures that carry out specific functions within the cell. | organelles |
| The rigid layer of nonliving material that surrounds the cells of plants and other organisms is called the ... | cell wall |
| Forms the outside boundary that separates an ANIMAL cell from its environment | cell membrane |
| Large oval structure that directs all the cell's activities | nucleus |
| Fluid that fills the region between the cell membrane and the nucleus. | cytoplasm |
| Produce most of the energy the cell needs to carry out its functions | mitochondria |
| A maze of passageways that carries proteins and other materials from one part of the cell to another. | endoplasmic reticulum |
| These function as little factories to make proteins. | ribosomes |
| Receives proteins and other newly formed materials and distributes them to other parts of the cell. | golgi bodies |
| Capture sunlight and use it to produce food for the cell. | chloroplasts |
| Storage area of the cell. | vacuole |
| Small round structures filled with enzymes that break down large particles into smaller ones. | lysosomes |
| True or False? Ribosomes produce proteins | True |
| True or False? The cells of plants and animals lack nuclei. | False |
| True or False? Cells are the basic units of structure and function in organisms. | True |
| A group of cells all performing the same function. | tissue |
| 2 or more tissues working together. | organ |
| A group of organs all performing a function within an organism. | organ system |
| The theory that life came from non-living substances that was disproven by Pasteur and Redi | spontaneous generation |
| The scientists that proved that life comes from life | Redi and Pasteur |
| A cell that has a nucleus enclosed in a nuclear membrane | eukaryotic cell |
| A cell that does not have a nucleus. | prokaryotic cell |
| Living space, Food, Water and ... Name the last need of living things. | Stable internal conditions (homeostasis) |
| When the arctic fox loses its heavy winter coat for a less dense summer coat of fur, it is meeting which need of living things? | Stable internal conditions (homeostasis) |
| One characteristic of living things is that they are all made of ...(2 possible answers) | cells, or similar chemicals (proteins, nucleic acids, lipids, carbohydrates, water) |
| Living things must use... | energy |
| A change in an organism’s surroundings that causes the organism to react is called a | stimuli |
| A sunflower changing from a small seed into a tall plant is an example of which trait of all living things? | growth and development |
| Robins laying eggs is an example of which trait of all living things? | reproduction |
