Which diagram in figure 32-2 shows an example of a joint involved in lifting your arms above your head? a. diagram a -- b. diagram b c. diagram c d. diagram d

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

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

Describe the function of the endomembrane system? what organelles are involved?