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7th Grade Science
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9
Science
7th Grade
01/03/2006

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Term
Oraganic compounds contain...
Definition
Carbon and Hydrogen
Term
An example of inorganic is...
Definition
water
Term
The four categories of organic molecules are...
Definition
Lipids
Proteins
Carbohydrates
Nucleac acids
Term
Enzymes are...
Definition
special proteins that regulate chemical reactions
Term
Use as many big words as you can to explain what happens when you leave a carrot in salt water over night.
Definition
i.e.: carrot cells are selectively permeable to salt and water. Salt diffuses into the carrot cells, water diffuses out of the carrot, which is called osmosis. the salt and water are trying to reach equilibrium. this is called passive transport bc no energy is required. This is not active transport bc no energy was required. This is not endocytosis or exocytosis bc salt and water are passing through the membrane. when water is sucked out of the cytoplasm, the cell contracts inside the cell wall, making the carrot flimsy
Term
The total of all the chemical reactions in an organism is referring to that organims...
Definition
mteabloism (think of Elle's blonde friend in Legally Blonde who couldn't say metabolism... she said metrabolism)
Term
Photosynthesis- name who, what, where, when
Definition
who: producers
what: turning sunlight, water, and carbon into sugar and oxygen
where: the chloroplasts
when: all the time
Term
Respiration- who, what, where, when
Definition
who: all organisms
what: turning sugar and oxygen into carbon dioxide, water, and usable energy
where:the mitochondria
when: all the time
Term
Why do plants create oxygen with photosynthesis and the oxygen goes out when they need oxygen too?
Definition
Plants make more oxygen than they need
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