Top answers

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
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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
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What is the derivative of distance with respect to time.

The derivative of distance with respect to time is velocity.
Answered by • Physics tutor
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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
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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...
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Answered by Rachel D. • French tutor
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