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Describe the process of evolution by natural selection

Think of two animals of the same species. One of them has a gene that contains mutation X. Mutation X helps this animal to be better adapted to survive as it makes them stronger, and more likely to find food...
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Answered by Sara M. • Biology tutor
3146 Views

What is the definition of a competitive enzyme inhibitor?

A competitive enzyme inhibitor is a molecule which has a similar structure to the target molecule (substrate). It acts by binding to and blocking the active site of the enzyme. This prevents the substrate fr...
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Answered by Olivia W. • Biology tutor
3244 Views

What is the difference between the verbs "ser" and "estar" and when should they be used?

"Ser" and "estar" are the 2 forms of the verb "to be" in Spanish. The first indicates identity and is more permanent, used in sentences like "I am Naomi" (Yo soy Naomi...
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Answered by Naomi R. • Spanish tutor
2380 Views

When do you use 'avoir' or 'être' for the passé composé?

The passé composé is composed of two parts - the auxiliary verb (avoir or être) in the present tense and the past participle of the verb you want to put into the past tense (for example, jouer> joué). The...
RD
Answered by Rachel D. • French tutor
18588 Views

Name 3 differences between RNA and DNA (3).

RNA is single stranded however DNA is double stranded. RNA contains the base uracil however DNA contains the base thymine. RNA contains the sugar ribose however DNA contains the sugar deoxyribose. RNA is fou...
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Answered by Samodani W. • Biology tutor
3071 Views