the part of an enzyme or antibody where the chemical reaction occurs

transport of a substance (as a protein or drug) across a cell membrane against the concentration gradient; requires an expenditure of energy

a trust in which the trustee must perform certain duties

a trust in which the trustee must perform certain duties

a trust in which the trustee must perform certain duties

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb

the voice used to indicate that the grammatical subject of the verb is performing the action or causing the happening denoted by the verb