B3 - Molecules of Life

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Mitochondria
• Located in the cytoplasm of the cell • Respiration occurs here
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Ribosomes
• Located in the cytoplasm • The site of photosynthesis
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Nucleus
• Contains genes • Each gene is a section of a chromosome made of DNA • They code for a particular protein
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DNA
• Made of 2 strands coiled to form a double helix • Each strand contains chemicals called bases • There are 4 different types of bases with cross links between the strands formed by pairs of bases • Each gene contains a different sequence of bases
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Bases
• 4 bases = A, T, G, C • Cross links holding strands together are always between the same bases • This is complimentary base pairing
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mRNA
Carries code needed to produce a protein from the DNA to ribosomes
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Enzymes
• Many of the proteins that are made • Can control the activity of the cell
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Watson & Crick
• Built model of DNA using data from other scientists • Their important discoveries = x-ray photos showed the shape of DNA as a double helix + Data indicating that the bases occured in pairs
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Nobel Prize
• Watson & Crick received a Nobel Prize for working out the structure of DNA in 1953 and were awarded this in 1962 • Discovery needs to be checked by other scientists to make sure it is correct
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Other cards in this set

Card 2

Front

• Located in the cytoplasm • The site of photosynthesis

Back

Ribosomes

Card 3

Front

• Contains genes • Each gene is a section of a chromosome made of DNA • They code for a particular protein

Back

Preview of the back of card 3

Card 4

Front

• Made of 2 strands coiled to form a double helix • Each strand contains chemicals called bases • There are 4 different types of bases with cross links between the strands formed by pairs of bases • Each gene contains a different sequence of bases

Back

Preview of the back of card 4

Card 5

Front

• 4 bases = A, T, G, C • Cross links holding strands together are always between the same bases • This is complimentary base pairing

Back

Preview of the back of card 5
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