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14 Cards in this Set
- Front
- Back
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What is the key difference between autotrophs and heterotrophs? |
Autotrophs fix carbon and heterotrophs do not. |
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Where does a phototroph get its energy from? |
Energy from light |
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I am an organism which cannot fix carbon but I get my energy from light, what am I? |
A Photoheterotroph. |
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I am an organism which can fix carbon and I get my energy from light, what am I? |
A Photoautotroph |
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I am an organism which cannot fix carbon and I can't get any energy from light instead I get it from inorganic oxidation, what am I? |
A Chemoheterotroph |
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I am an organism which can fix carbon but I can't get my energy from light instead I get it from inorganic oxidation, what am I? |
A chemoautotroph |
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What subtypes of heterotrophs are there? Describe them. |
1. Lithotrophs - obtains hydrogen or electrons from inorganic substrates 2. Organotrophs - an organism that obtains hydrogen or electrons from organic substrates |
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In bacteria; what is the nucleoid? |
A cell component which contains circular DNA molecule (s). |
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How does the cell envelope differ between bacteria types? |
1. Gram positive - No outer membrane - thicker peptidoglycan layer 2. Gram negative - Outer membrane present - thinner peptidoglycan layer |
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In animal cells; what is the role of the nucleolus? |
The site of rRNA synthesis |
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In animal cells; what is the role of the smooth endoplasmic reticulum? |
Site of lipid synthesis and drug metabolism |
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In animal cells; what is the role of the lysosome? |
Degrades intracellular debris |
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In animal cells; what is the role of the peroxisome? |
Oxidation fatty acid |
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In plant cells; what is the role of the glyoxysome? |
Houses the enzymes of the glyoxylate cycle. |
