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Transcript
The _________ is the smallest unit of life. Anything smaller is not alive. ___________ living things are made of cells. There are three basic types of cells. ________________,________________, &_______________. Cells contain tiny structures that perform specific functions that are called ___________. The ________ ________ is a rigid layer of non-living material that surrounds the cells of plants and some other organisms. The cell wall is made of a tough, yet flexible, material called __________________. The function of the ____________ ____________is to support and protect the plant cell. The cell wall is permeable to certain materials such as oxygen and water. Which means these materials can pass through the cell wall. All cells contain a _____________ _______________. A flexible outer covering. The function of the ___________ _____________is to control what materials enter and leave the cell. The ______________ of a cell is the control center, controlling all the cell’s activities. The nucleus is surrounded by a___________________ _________________, with many pores that allow certain materials to enter and leave the nucleus. One such material is __________________, which contain the genetic code that directs the cells activities. Ribosomes are made in the _______________________ of the nucleus. The cell is filled with a jelly-like substance called the ____________________, which “holds” all the other organelles. _____________________ are known as the “powerhouse” of the cell, because they produce the energy that the cell needs to function. _________________________ are tiny grain-like structures that make proteins. ________________________, found in plant cells, capture sunlight to produce food for the cell. Chloroplast are filled with chlorophyll which is what give plants their green color. Living things that can make their own food are known as autotrophic. In a food chain, autotrophs are called producers. Living things that cannot make their own food, and are dependant on things that can are called heterotrophic. In a food chain, heterotrophs are the consumers. _________________ _______________ contain a cell wall and membrane, but does not contain a nucleus. Bacterial cells are usually __________________ than plant or animal cells. Bacterial cells usually fit in a food chain as decomposers.