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10 Cards in this Set
- Front
- Back
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Why do liver and muscle cells have large numbers of mitochondria? |
The mitochondria is where respiration happens. Respirations produces energy. Liver and muscle cells require the most energy to function. |
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Give 2 ways in which bacterial cells differ from animal and plant cells. |
- They do not have mitochondria - They do not have a nucleus |
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What are the 4 bases of DNA? |
A, G, C and T |
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What evidence did Watson and Crick use to build a model of DNA? |
Data and information that scientists had collected in the past |
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Explain how DNA replicates itself. |
1) The double helix unzips it self to form 2 single strands of DNA 2) The strands then turn into new Nucleotide that join to make complimentary base pairing 3) The result is 2 double stranded molecules of DNA that are genetically identical to the original DNA |
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Name the molecule used to carry the code from DNA to the ribosomes. |
mRNA |
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Give 3 functions of proteins (excluding enzymes) |
Carrier Molecules: transports smaller molecules around the body. E.g. Haemoglobin Hormones: sends messages around the body. E.g. Insulin Structural Proteins: Strengthen connective tissues like ligaments. E.g. Collagen |
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What are enzymes? |
Enzymes control cell reactions in the body |
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An enzyme with an optimum temperature of 37 Degrees Celsius is heated to 60 Degrees Celsius. What happens to the enzyme? |
The molecules are colliding with each other far to often that then results in the enzyme denaturing. |
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What does the Q10 value of an enzyme-controlled reaction show? |
It shows how much the rate changes when the temperature is raised by 10 Degrees Celsius |
