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19 Cards in this Set
- Front
- Back
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Nucleus |
controls all activities in cell |
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Nuclear Membrane |
Surrounds nucleus |
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Nuclear pores |
opening of nuclear membrane ( allows certain things in and out of nucleus) |
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Nucleolus |
Centre of nucleus ribosomes are made |
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Cytoplasm |
jelly like substance contains organelles |
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Organelle |
carrys out special functions |
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mitochondria |
provides energy to cells |
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Ribosomes |
small organelles that don't have a cell membrane |
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DNA |
Deoxyribonucleic Acid (genetic info of cell) |
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DNA Structure |
Discovered by Watson and Clark AT, TA, CG, GC (CODE) Is a double helix "Sides" made from sugar and phosphate "Steps" are paired nitrogen bases |
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Nitrogen Bases |
4 bases 1) Guanne (G) 2) Cytosine (C) 3) Adenine (A) 4) Thymine (T) |
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genes |
represent only 37% of DNA |
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Gene Mutation |
change in specific order of , A,G,C,T bases |
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Effects of Gene Mutation |
1) delation 2) addition 3) subsitution |
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Neutral Mutation |
Subsitution of one letter in a sentance , may not change its meaning, does not have effect on organism. |
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Positive Mutation |
person might carry a mutatted gene that porduces intructions for a protien that prevents HIV from ifecting person. |
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Negative Mutation |
small changes in sequence of base that might be harmful. |
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Mutagens |
subtance or factors that can cause mutations in DNA |
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Gene Therapy |
is technique used to replace mutated genes with a healthy gene |
