Term
| Cell structure is related to... |
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Definition
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Term
| All cells are related by their... |
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Definition
| descent from earlier cells |
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Term
| All cells have four things: |
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Definition
Plasma/cell membrane
Semifluid substance (Cytosol)
Chromosomes (carry genes)
Ribosomes (make proteins) |
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Term
| Prokaryote general structure consists of... |
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Definition
| A nucleoid that stores DNA and no membrane bound cell parts. Cytoplasm is bound by the cell membrane. |
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Term
| General eukaryote structure consist of... |
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Definition
| DNA in a nucleus (surrounded by nuclear envelope). Also membrane bound cell parts. |
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Term
| Which cell type is larger, prokaryotic or eukaryotic? |
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Definition
| Eukaryotes are larger than prokaryotes. |
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Term
| What is cell metabolic rate determined by? |
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Definition
| Mass/volume, so big cells have higher metabolic needs |
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Term
| What is the rate of exchange with environment equal to in a cell? |
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Definition
| Surface area, larger membrane causes more material exchange. |
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Term
| Why do cells need to be small(er)? |
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Definition
| Because cells with a small surface are but large volume will die. |
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Term
| Eukaryotic cells: What carries out the instructions of DNA? Where is it? |
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Definition
| Ribosomes in the Nucleus and Rough ER make proteins. |
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Term
| What is the structure of the nucleus like? |
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Definition
| Nuclear envelope encloses the nucles (double membrane). Pores regulate entry and exit of molecu.les. Nucleus shape is maintained by Lamina (made of protein). Nucleolus inside the nucleus, where rRNA is produced. Nucleuplasm fills nucleus. |
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Term
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Definition
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Term
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Definition
| A DNA molecule with proteins. |
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Term
| What are ribosomes in Cytosol called? |
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Definition
| Free ribosomes, they are also bound to the ER |
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Term
| What is the structure of the ER? |
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Definition
| It is continuous with the nuclear envelope, with two regions. The rough ER, which has ribosomes to maker proteins and transport to the Golgi, and the Smooth ER, which makes lipids, processes carbohydrates, detoxifies drugs and poisions, stores calcium ions, and is a membrane factory of the cell. |
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