Biology

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  • Created by: Layla5901
  • Created on: 21-04-17 14:25
What is photosynthesis?
Is the process when plants use sunlight to make food/energy
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How do we know if starch is present in a leaf when using iodine?
Positive-blue/black. Negative-orange/brown
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What is the equation for photo synthesis?
Water+carbon dioxide=oxygen+glucose
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Name all the parts of a plant cell?
Cell membrane, cytoplasm, vacuole, cell wall, chloroplasts and nucleus
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What is the function of the chloroplasts?
Absorbs light energy to make food
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What is the function of the cytoplasm?
Where most of the chemical reaction should take place
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What are the main food groups?
Protein, vitamins, minerals, carbohydrates, fibre, fats, water
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How is food digested?
Food is taken into the body, food is broken down into pieces, broken down even smaller by the stomach acids, food particles are absorbed into the bloodstream.
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What parts of the body are used for digestion?
Gullet/osophogus, mouth, gal bladder, liver, stomach, small/large intestine, rectum, pancreas,
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What is the use of enzymes?
They speed up chemical reactions, known as biological catalysts, they do not get used up in chemical reactions
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Where does absorption take place?
It takes place in the small intestine where the small food molecules are absorbed into the bloodstream
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What are villi?
They are small finger like projections that are in the lining of the small intestine
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What is classification?
Grouping of organisms, based on their similarities of their characteristic features
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What is the system of classification?
Kingdom, phylum, class, order, family, genus and species
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How many pairs do chromosomes have?
23
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What are chromosomes made up of?
Long strands of DNA
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What is a gene?
Located on chromosomes, short sections of DNA
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What is variation?
The differences among members of the species
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What is selcetive breeding?
When we choose the species with the best feature to breed with another species with good features in hope that their offspring will have good features.
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What are the different stages of genetic engineering?
Cut out the gene that u are interested in using enzymes, insert the gene into the DNA of the bacterium, the bacteria divide(each has a copy of the new gene), the bacteria can now start producing human insulin
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Other cards in this set

Card 2

Front

Positive-blue/black. Negative-orange/brown

Back

How do we know if starch is present in a leaf when using iodine?

Card 3

Front

Water+carbon dioxide=oxygen+glucose

Back

Preview of the back of card 3

Card 4

Front

Cell membrane, cytoplasm, vacuole, cell wall, chloroplasts and nucleus

Back

Preview of the back of card 4

Card 5

Front

Absorbs light energy to make food

Back

Preview of the back of card 5
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