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bulgar [2K]
3 years ago
6

How are cancer therapies tailored to nucleotide synthesis -explain using the example of fluorouracil and methotrexate.

Biology
1 answer:
nika2105 [10]3 years ago
3 0

Answer:

By preventing the synthesis of DNA halting cell growth.

Explanation:

Fluorouracil and methotraxate prevent the synthesis of the neucleoside Thymidine thus preventing DNA replication and elongation. Methotraxate has a structure analogous to Folic acid which is important for thymidine synthesis. Thus, it acts as a competitive inhibitor on dihdrofolate reductase an enzyme that is essential for tetrahydrofolate formation, a folic acid derivative.

Fluorouracil acts by inhibiting thymidylate synthase which catalyses an essential step in Thymidine synthesis.

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What is stored in carbon bonds
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<span>The correct answer is chemical covalent energy. This energy is stored and when the bonds break the energy is released. You also need energy to break them. The most common form is a single bond but there are examples where there are double and triple bonds when building various compounds.</span>
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3 years ago
The ____________ of animals is based on scientists’ current understanding of the evolutionary history of living species. (1 poin
EastWind [94]
The correct answer would be diversity 
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He peppered moth provides a well-known example of natural selection. the light-colored form of the moth was predominant in engla
mixas84 [53]
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The dental formula for both Old World and New World monkeys is the same as the dental pattern for tarsiers.
Snezhnost [94]

Answer:

b. false

Explanation:

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Old world monkey have narrow nose but new world money have wide nose.Generally old world monkey are found in Asia and Africa that is why they called old world monkey.

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3 years ago
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Evgesh-ka [11]

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Chromatography is the separation of a mixture by passing it in solution or suspension or as a vapor (as in gas chromatography) through a medium in which the components move at different rates

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