Biology Topic 1

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Do prokaryotic cells have a nucleus?
no, eukaryotic cells do
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what differences do a plant and animal cell have?
plant cells have a chloroplast, vacuole and cell wall
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what does a permanent vacuole have?
cell slap, a weak solution of sugar and salts
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where does photosynthesis happen in a plant cell?
chloroplast
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whats the formula for magnification?
magnification = image size/real size
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Explain how to prepare your magnification
1.add a drop of water to the middle of a clean slide 2.cut up an onion and separate into layers. use tweezers to peel off some epidermal tissue from bottom of one of the layers 3. using tweezers place epidermal tissue on slide 4. add a drop of iodine
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Explain how to prepare magnification slide
5. place a cover slip on top.
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what does the course adjustment knob do?
moves the stage up or down
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what does the fine adjustment knob do
it adjusts the focus to get a clear image
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function of a sperm cell
to get the male DNA to the female DNA. long tail and streamlined head to help it swim. a lot of mitochondria to provide energy. enzymes in head to help digest through egg cell membrane
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nerve cell function?
carry electrical signals from one part of body to another. cells are long to cover more distance and have branched connections to connect to other nerve cells
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muscle cell function
to contract quickly. long cells and contain lots of mitochondria to generate energy needed for contraction
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root haircells
cells on surface of plant roots, grow into long hairs that stick out soil. gives plant a big surface area for absorbing water and mineral ions
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what happens before mitosis
it has to grow and increase the amount of subcellular structures such as mitochondria and ribosomes. duplicates DNA
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difference between mitosis and meiosis
mitosis: Happens everywhere in the body meiosis: in the sex gametes
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process of mitosis
line up in the middle and then divide into two new daughter cells
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Other cards in this set

Card 2

Front

plant cells have a chloroplast, vacuole and cell wall

Back

what differences do a plant and animal cell have?

Card 3

Front

cell slap, a weak solution of sugar and salts

Back

Preview of the back of card 3

Card 4

Front

chloroplast

Back

Preview of the back of card 4

Card 5

Front

magnification = image size/real size

Back

Preview of the back of card 5
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