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| All living thins are composed of cells, and all cells come from existing cells. |
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very small, simple cells which lack membrane-bound organelles.
Do NOT contain nuclei, mitochondria, chloroplasts, vacuoles, etc.
Ex) bacteria |
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Membrane-bound organelles.
All other organisms in earth. |
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| Phospholipid bilayer with embedded proteins that controls the movement of materials into and out of the cell. |
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| A double membrane structure with an inner folded membrane Cristae to increases the surface area available for cellular respiration that produces ATP. |
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Three dimensional tubular networks that are connected to the nucleus in places.
Rough E.R/ Smooth E.R |
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large number of Ribosomes are attached on its surface.
Proteins are synthesized |
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No Ribosomes
Produce lipids such as steroid hormones.
Also used for detoxifying drugs in some cells. |
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Small dense staining granules found on rough E.R
Act as the site of protein synthesis. |
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| Groups of flattened saccules used to STORE, PACKAGE, and EXPORT proteins and other materials produced in the cell. Materials are packed in membrane. |
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| A small vacuoles used to transport materials. Used for exocytosis from golgi body and endocytosis by cell membrane. |
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| A membrane covered sack usually filled with water and chemicals. These chemicals may be food on the way into the cell or waste on the way out. They aid in food digestion and water removal. |
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| Vesicles filled with hydrolytic enzymes produced by the Golgi bodies. They move throughout the cell and fuse with vacuoles and other structures to help digest food or breakdown old structures for recycling or removal. |
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| A double layer membrane surrounding the nucleus. It contains nuclear pores and controls the movement of materials into and out of the nucleus. |
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A centrally located control center for cellular activity. Contains DNA in the form of chromosomes and is the site of DNA replication.
Also contains transcription of mRNA for protein synthesis. |
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| A dark spherical area in the nucleus. It produces rRNA (ribosomal) a structural component of ribosomes. |
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| Contain DNA and histone proteins. Humans have 23 pairs in all cells but sperm and egg. Chromosomes contain all of the genetic information for the development, growth, and functioning of the organism. |
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Term
| microtubules and microfilaments |
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Definition
| Make up the cytoskeleton of the cell. The cytoskeleton helps animal cells to maintain shape and allows organelles to move within the cytoplasm. It is also involved in the movement of cilia, flagella and the cell membrane itself. |
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