Cells. are 2 types of cells. These bacteria are Prokaryotes. Cilia. Prokaryotic cells are the simplest. Eukaryotic cells are more complex.

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1 Cells There are types of cells. Prokaryotic Eukaryotic Prokaryotic cells are the simplest. cilia. they lack nuclei. they are single cells. they include: - bacteria - blue-green algae 4. some move using: or flagella These bacteria are Prokaryotes Some bacteria are covered with cilia. cilia Cilia This close-up of a cilium shows that it is attached to the cell membrane. The point of attachment is called the basal body. The cross section shows that a cilium is made of 0 pairs of microtubules. This arrangement is often called the 9 + pattern pair of microtubules on the outside, and microtubules in the middle. The 9 + pattern is easily seen in this cross-section of several cilia. Eukaryotic cells are more complex. nucleus eukaryotic organelles. they have nuclei. they have many organelles not found in prokaryotes. they are the cells of: - protists -fungi -plants -and animals

2 Plants and Animals have Eukaryotic Cells Structures of Animal Cells Plant Cell Animal Cell Animal cells come in many sizes and shapes. straight edges curved edges This is a liver cell. notice the large nucleus Here are red blood cells. their nuclei disappear shortly after being made These are nerve cells. the main body of the cell is here this part sends signals to other nerve cells Animal Cell Structures cytoplasm nucleus cell membrane animal cells have main parts:. cell membrane. cytoplasm. nucleus Cell Membrane cell membrane the cell membrane is the outer boundary of a cell that controls what enters and leaves Here are cells with their cell membranes next to each other. upper cell cell membrane cell membrane lower cell

3 The cell membrane is actually quite complicated. Cytoplasm Nucleus cytoplasm nucleus cytoplasm is gel-like and includes all of the organelles in addition to many substances the nucleus is usually the largest organelle, is round, and is located near the cell s center These long, thin muscle cells have long, thin nuclei. nuclei The nucleus has many parts.

4 Liver Cell Nucleus nuclear envelope chromatin nucleolus nuclear pores

5 Golgi Apparatus Individual sacs of the golgi are often very close together. Notice the vesicles being made at the ends of the golgi. the Golgi apparatus is often shaped like a stack of pancakes Golgi apparatus vesicles it makes vesicles, therefore, they are often nearby vesicles made by the golgi stack of pancakes. ribosomes make the protein. A vesicle transports the protein to the golgi. The golgi receives the protein 4. The golgi processes the protein The golgi packages the protein in a vesicle The vesicle transports the protein

6 Mitochondria This shows the size difference between a mitochondrion and ribosomes. Mitochondria may be long and thin. mitochondria mitochondria are bean shaped organelles Mitochondria - the Powerhouse of the Cell mitochondria take the energy in food particles and use it to make ATP Parts of a mitochondrion Parts of a Mitochondrion double membrane cristae (folded inner membrane) the cristae are the sites where food energy is converted to ATP ATP provides energy for all cell activities lysosomes Lysosomes lysosomes are sacs containing enzymes for digesting unwanted substances Lysosomes clean up cells Lysosomes are made by the Golgi The Cytoskeleton (microtubules and microfilaments) Their enzymes digest:. worn out cell parts lysosomes are vesicles. large food particles. invading bacteria enzymes the proteins in them are enzymes function: support and movement

7 Plant Cells Plant Cells Plant Cell Structures Like animal cells, plant cells have:. nuclei. ER (ribosomes). golgi (vesicles) 4. mitochondria 5. lysosomes 6. cytoskeleton In addition, plant cells have:. cell walls. vacuoles. chloroplasts cell wall vacuole chloroplast the cell wall contains cellulose and gives shape and support to the cell cell wall Cell Wall many plant cells have one large vacuole vacuole Vacuoles Some cells have several vacuoles. it is the plant s skeleton vacuoles are usually used to store food, waste, or water the chloroplast makes food (glucose) for plant cells chloroplast they are green because they contain chlorophyll Chloroplasts Parts of a Chloroplast the chloroplast also has a double membrane outer membrane inner membrane Parts of a Chloroplast inside the chloroplast are stacks of grana grana grana are the sites where sunlight is trapped

8 Parts of a Chloroplast the space around the grana is called the stroma stroma This one-celled protist is not a plant. However, it does have a vacuole and chloroplasts Contractile Vacuoles the vacuole fills with water and then contracts to send it outside the cell the stroma is the site where food (glucose) is made nucleus ribosomes lysosomes The End endoplasmic reticulum mitochondria Golgi apparatus

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