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3 Cards in this Set
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Describe 3 components of the image and state what the image resembles. |
1) Bounded by two membranes called the nuclear envelope - With nuclear pores (to allow passage of large molecules, such as mRNA and ribosomes. 2) The granular material is nucleoplasm - Contains chromatin which is made of coils of DNA bound to protein. [During cell division, chromatin condenses into chromosomes] 3) Within the nucleus are one or more spherical bodies called a nucleolus (Formation of rRNA) |
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Mitochondria consist of: |
-Two membranes separated by a narrow, fluid-fillef inter-membrane space. (The inner membrane is folded inwards to form cristae) -An organic matrix, which is a solution containing many compounds, including lipids and proteins -Small (70S) ribosomes and a small circle of DNA ...which enable mitochondria to make some of their own proteins and self-replicate |
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Chloroplasts consist of: |
-70S ribosomes and circular DNA...which enable them to make some of their own proteins and self replicate -The STROMA which contains some products for photosynthesis -Within the STROMA are closed, flattened sacs called THYLAKOIDS. A stack of these is called a GRANUM. Photosynthetic pigments are found in the THYLAKOIDS. [The arrangement produces a large surface area -efficient for trapping light energy] |