When a red stain is added to a culture containing both living and dead cells, only the dead cells take up the stain. Which structure prevents the stain entering the living cells? A. cell membrane B. cell wall C. cytoplasm D. vacuole Which of the following have both cytoplasm and cell walls? A. liver cells B. red blood cells C. root hair cells D. xylem vessels The dire wolf is an extinct species of wolf. What is the correct scientific name for this wolf? A. Canis Dirus B. canis dirus C. Canis dirus D. canis Dirus Which shows an organism that has been named using the binomial system? A. Bacterium B. Flowering plant C. HIV D. Home sapiens
Cell Structure
The knowledge and concept about the structure of the cells have changed constantly over the past years. Primarily the scientist defines the cells as a simple membranous sac with fluids and some particles. Researches have now revealed that the cell is the more complex and basic unit of life. There are different types of cells and they also differ in shape and structure. The basic three parts of a cell are cell membrane, cytoplasm, and organelle.
Plant Cell
The smallest functional unit of a living organism is known as the cell. It is composed of cytoplasm enclosed by an outer layer known as the cell membrane. A cell is classified as a prokaryotic cell and a eukaryotic cell. A prokaryotic cell does not contain a nucleus, and the genetic material is freely suspended in the cell cytoplasm; for example, bacteria are composed of a prokaryotic cell. Whereas a eukaryotic cell contains a nucleus and membrane-bound cell organelles with a specific function, plants and animal cells are examples of eukaryotic cells.
Plant Cell Types
Plants are made up of a variety of cell types that include both living and dead cells. These cells provide them mechanical and structural support along with the growth of plants. Plant tissue is a group or collection of cells, which are similar in structure and work together to accomplish a specific function. Plant cells are most similar to animal cells, both being eukaryotic cells.
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