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Describe the structure of DNA

-DNA is a double-stranded helix-Two polynucleotide strands (that run antiparallel to each other), held together by hydrogen bonding between the complementary base pairs-Each nucleotide consists of deoxyri...

Answered by • Biology tutor

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How do the dative and accusative cases work with prepositions?

German prepositions are categorised according to whether they take the dative or the accusative. There are a list of prepositions that take the dative (s...

Answered by Anna H. • German tutor

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Why does an enzyme only catalyse one reaction?

Enzymes are proteins, which have a specific 3D tertiary structure, with a specifically shaped active site. The active site can only bind one substrate to...

Answered by Zara S. • Biology tutor

13076 Views

write a balanced equation of the reaction between sodium and oxygen

2Na + O > Na₂O

Answered by erica b. • Chemistry tutor

2794 Views

Translate the following passage: I like to go on holiday to Spain. It is always sunny and our favourite hotel has a big swimming pool. Last summer we went to Madrid and I saw a concert in the bull-ring. I am going to study Spanish in the future.

Me gusta ir de vacaciones a España. Siempre hace sol y nuestro hotel favorito tiene una piscina grande. El verano pasado, fuimos a Madrid y vi un concierto en la plaza de toros. Voy a estudiar el español ...

Answered by Amber W. • Spanish tutor

2452 Views