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Science - B1 (Foundation + Higher AQA Combined Science Trilogy)

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Cells are what living things are made up of The two groups of cells Prokaryotic and Eukaryotic Eurkaryotic cells are complex. They include animal and plant cells Prokaryotic cell are smaller and simple. Structures within cells Subcellular structures Nucleus' function + purpose contains genetic material that controls activity Cytoplasm's function + purpose place where chemical reaction happens. Enzymes control the reaction Cell Membrane's function + purpose Hold cell together and control what enter and exits Mitochondria's function + purpose Aerobic respiration transfer energy for cell. Ribosome's function + purpose Protein synthesis Cell wall's function + purpose Support and strengths cell Cell wall material Cellulose Permanent vacuole function + purpose Has cell sap Chloroplast's function + purpose Where photosynthesis happens and creates food. They contain chlorophyll Subcellular structures of a bacterial cell Cell wall Cell membrane Cytoplasm Plasmids How do light microscopes work? They use light and lenses to form an image and magnify it. What can you see with a light microscope? Individual cells and nuclei What can you see with a electron microscope? Internal structure of mitochondria and chloroplasts. Ribosomes and plasmids. What is the difference between electron and light microscopes? Electron microscopes have a higher resolution. Magnification equation Magnification = image size/ real size What do you need to do in the B1 onion experiment before you put iodine? Peel the epidermal tissue off What do you need to do in the B1 experiment before you place the epidermal tissue on the slide? Add a drop of water on the slide. Why do you add iodine to the epidermal tissue in the B1 onion experiment? To highlight object in the cell. What do you need to do in the B1 onion experiment after you add a cover slip? Make sure there are no air bubbles. What do you need to do in the B1 onion experiment before you touch the coarse adjustment knob? Put it on the lowest powered objective What does the coarse adjustment knob do? Move the stage up and down. Differentiation When a cell changes to become specialised Differentiation in animal cells Lost ability in a early stage Differentiation in plants cells Never lost ability Undifferentiated cells Stem cells Sperm cell specialised features long tail to help swim streamlined head to help swim mitochondria for energy Enzymes to digest through egg's membrane Nerve cell specialised features Long to cover distance Branched connection to connect Muscle cells specialised features Long so have space to contract Mitochondria so they have the energy Root hair cell specialised features Big surface area to abs

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Written in
2022/2023
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Science - B1 (Foundation + Higher AQA
Combined Science Trilogy)
Cells are - correct answerwhat living things are made up of The two groups of cells -
correct answerProkaryotic and Eukaryotic Eurkaryotic cells - correct answerare
complex. They include animal and plant cells Prokaryotic cell - correct answerare
smaller and simple. Structures within cells - correct answerSubcellular structures
Nucleus' function + purpose - correct answercontains genetic material that controls
activity Cytoplasm's function + purpose - correct answerplace where chemical reaction
happens. Enzymes control the reaction Cell Membrane's function + purpose - correct
answerHold cell together and control what enter and exits Mitochondria's function +
purpose - correct answerAerobic respiration transfer energy for cell. Ribosome's
function + purpose - correct answerProtein synthesis Cell wall's function + purpose -
correct answerSupport and strengths cell Cell wall material - correct answerCellulose
Permanent vacuole function + purpose - correct answerHas cell sap Chloroplast's
function + purpose - correct answerWhere photosynthesis happens and creates food.
They contain chlorophyll Subcellular structures of a bacterial cell - correct answerCell
wall Cell membrane Cytoplasm Plasmids How do light microscopes work? - correct
answerThey use light and lenses to form an image and magnify it. What can you see
with a light microscope? - correct answerIndividual cells and nuclei What can you see
with a electron microscope? - correct answerInternal structure of mitochondria and
chloroplasts. Ribosomes and plasmids. What is the difference between electron and
light microscopes? - correct answerElectron microscopes have a higher resolution.
Magnification equation - correct answerMagnification = image size/ real size What do
you need to do in the B1 onion experiment before you put iodine? - correct answerPeel
the epidermal tissue off What do you need to do in the B1 experiment before you place
the epidermal tissue on the slide? - correct answerAdd a drop of water on the slide.
Why do you add iodine to the epidermal tissue in the B1 onion experiment? - correct
answerTo highlight object in the cell. What do you need to do in the B1 onion
experiment after you add a cover slip? - correct answerMake sure there are no air
bubbles. What do you need to do in the B1 onion experiment before you touch the
coarse adjustment knob? - correct answerPut it on the lowest powered objective What
does the coarse adjustment knob do? - correct answerMove the stage up and down.
Differentiation - correct answerWhen a cell changes to become specialised
Differentiation in animal cells - correct answerLost ability in a early stage Differentiation
in plants cells - correct answerNever lost ability Undifferentiated cells - correct
answerStem cells Sperm cell specialised features - correct answerlong tail to help swim
streamlined head to help swim mitochondria for energy Enzymes to digest through
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