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Life Unit1 Chap2 #2
| Question | Answer |
|---|---|
| A structure that contains genetic information and directs cell growth | chromosome |
| An organelle that functions as the cell's transportation system (the main factory - connected to the nucleus) | endoplasmic reticulum |
| An organelle that receives packages, and disperses materials (like the post office - separate from the nucleus) | Golgi apparatus |
| An organelle that breaks down food particles and old cell organelles | lysosome |
| An organelle that produces energy for the cell | mitochondrion |
| An organelle that produces proteins | ribosome |
| An organelle that stores materials | vacuole |
| Control center of a eukaryotic cell that contains DNA | nucleus |
| The thin membrane around the nucleus | nuclear membrane |
| The outer layer of an animal cell, and the layer underneath a plant's cell wall | cell membrane |
| A watery fluid that surrounds everything inside the cell | cytoplasm |
| Metabolic centers in plant cells that contain the green pigment chlorophyll | chloroplasts |
| The rigid outer layer of a plant cell | cell wall |
| The molecule within a cell that carries the genetic information | DNA |
| A small segment of DNA that carries hereditary information | gene |
| The basic structural unit of DNA | nucleotide |
| The process in which molecules make exact duplicates | replication |
| The cell division process in which one cell splits into two identical cells, each having a complete set of the same DNA (happens in Prokaryotes like bacteria, which do NOT have a nucleus). | binary fission |
| The complex cell division process that forms new cells with an identical copy of the parent's chromosomes (fingernail cells reproduce this way for example; cells WITH a nucleus i.e. Eukaryotes) | mitosis |
| The cell division process that forms sex cells that contian half the usual number of chromosomes | meiosis |