Why is energy needed for active transport

Which is required for sexual fissiondiploid cell productionmeiosis

The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol

Identify the type of energy used in each action. the flexing of an arm muscle: a signal transduction process by a neuron: a ball at the top of a hill: 1. electrical energy 2. mechanical energy 3. gravitational potential energy