What three things do plant cells have that animal cells don't?
Permanent Vacuole, Chloroplasts, Cell Wall
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Where is the genetic material found in animal cells?
The Nucleus contains genetic material (DNA)
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Where is the genetic material found in bacterial cells?
Their genetic material (DNA) -Single loop of DNA and maybe Plasmids-floats freely in the cytoplasm
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What type of organisms are Bacteria?
Prokaryotes
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What has a higher resolution - a light microscope or an electron microscope?
The Electron Microscope has a higher resolution which means a sharper image
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What is the formula for Magnification?
Magnification= Image Size divided by Real Size
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What do Light Microscopes use?
Light and Lenses
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What do Light Microscopes let us see?
Light Microscopes allow us to see individual cells and large sub-cellular structures
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What is Cell Differentiation?
Cell Differentiation is the process by which a cell changes to become specialized for its job
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Give three ways a sperm cell is adapted for swimming to an egg cell?
1)Has a long tail and a streamlined head to help it swim to the egg 2) Has a lot of mitochondria in the cell to provide the energy needed to swim to the egg 3) I t carries enzymes in its head to digest through the egg cell membrane
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What are Chromosomes?
Chromosomes are coiled-up lengths of DNA molecules
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What is the Cell cycle?
The Cell cycle makes New Cells for Growth, Development and Repair
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What is mitosis used for by multi-cellular organisms?
Multi-cellular organisms use mitosis to grow or replace cells that have been damaged
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Give the first way embryonic stem cells could be used to cure diseases
Could replace faulty cells- You could make insulin-producing cells for people with diabetes
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Give the second way embryonic stem cells could be used to treat disease
Could replace faulty cells- You could make nerve cells for people paralysed by spinal injuries
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Why might some people be opposed to the use of human embryos in stem cell research?
Some people are against stem cell research because they feel that human embryos shouldn't be used for experiments since each one is a potential human life
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What is Diffusion?
Diffusion is the spreading out of particles from an area of Higher Concentration to an area of Lower Concentration
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Name three substances that can diffuse through cell membranes, and two that can't
That Can: glucose, amino acids, water That Can't: starch, proteins
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What type of molecules move by osmosis?
Water molecules
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Give the two main differences between active transport and diffusion
1) Active Transport uses Energy 2) While diffusion is the movement of particles from a high concentration to a low, but Active transport is low to high
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Give three adaptions of exchange surfaces that increase the efficiency of diffusion
1)the flattened shape of structures such as leaves, 2) the alveoli in the respiratory system ,3) the villi in the digestive system
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Give two ways that the villi in the small intestine are adapted for absorbing digested food
1) a single layer of surface cells 2)a very good blood supply to assist quick absorption
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Explain how leaves are adapted to maximize the amount of carbon dioxide that gets to their walls
The underneath of the leaf is an exchange surface. It's covered in biddy little holes called stomata the carbon dioxide diffuses in through
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Other cards in this set
Card 2
Front
What three things do plant cells have that animal cells don't?
Back
Permanent Vacuole, Chloroplasts, Cell Wall
Card 3
Front
Where is the genetic material found in animal cells?
Back
Card 4
Front
Where is the genetic material found in bacterial cells?
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