important tips: organelles-little organs structures that carry out a certain function cytosol-liquid...
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Important Tips:Organelles-little organs
Structures that carry out a certain function
Cytosol-liquid portion of the cellMostly waterMany metabolic
reactions take place here
Contain macromolecules
Cytoplasm-portion of cell outside the nucleusIncludes organelles and
cytosol
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NucleusBrain of the cellHouses the DNA (DNA has the instructions to
make protein and other molecules)Nuclear envelope-surrounds the nucleus
Has pores to allow certain things to enter and leave
Nucleolus-small region in the nucleusMakes ribosomes
What does it look like?Large circle in the middle of the cell
Plant and animal
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RibosomesMakes proteinsOrders to make
proteins come from the nucleus
Can be free floating in cytoplasm or attached to endoplasmic reticulum
What does it look like? Dots
Plant and animal
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Endoplasmic ReticulumRough ER-makes
protein due to ribosomes attachedPackages protein tooLooks like tubes with
dots on surfaceSmooth ER-metabolizes
cholesterol; membrane synthesis; detoxification; stores calciumNo ribosomes attachedLooks like tubes
Plant and animal
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Golgi apparatusWhere proteins go
after erModify, sort, and
package proteins and other materials from er for storage in cell or secretion
What does it look like?Pancake stacks
Plant and animal
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LysosomesContains enzymesDigests proteins,
lipids, and carbohydrates
Digests useless organelles
Enzymes come from the golgi
What does it look like?Small circles
Animal and some plants
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VacuolesStorage
compartmentsPlants have a large
central vacuoleVacuole fills up with
water and presses against the cell wall Creates a square shape
and rigid structure
ParameciumContractile vacuole
Pumps out excess water
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MitochondriaPowerhouse of cellCreates cellular
energy through a process called cellular respiration
Has its own DNA that you inherit from your mom
Looks like a jelly bean or kidney bean
Plants and animals
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ChloroplastOnly in plantsFilled with
chlorophyll (green pigment)
Carry out photosynthesis
What do they look like? Watermelons
Have DNA
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CytoskeletonStructures that provide
shape, support, and movement
MicrofilamentsProvide structure
Actin in musclesMovement
AmoebasMicrotubules
Maintain cell shapeHelp to separate
chromosomes in mitosisMovement
Cilia and flagella
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PeroxisomesFilled with enzymesAnimals-Get rid of
toxic substances that the cell produces (like hydrogen peroxide which builds up in the liver) catalase here
Plants-convert fatty acids to sugar and help the chloroplasts
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Cell WallExtra boundary
around the plant cellOutside of
membraneGives plant shape,
rigid structure, and protection
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Questions1. Plants/animals do
not have chloroplasts
2. How is a cell like a factory? Every organelle has an important function in the assembly of molecules
3. Vacuole in plants allow the plant to support structures likes flowers and leaves
4. Mitochondria provide the energy or power for the cell in the form of ATP.
6. E7. B