What are some examples of nutrients that circulate in blood? Check all that apply.
red blood cells
glucose (a simple sugar)
amino acids
✓
fats
✓
white blood cells

Which of the following is a possible reason for sleep? a) growth b)digestive c)speed d)intelligence

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

Match each medication with its description.