Which system recieves and sends electrical signals through out the body?
a. muscular
c. nervous
b. skeletal
d. cardiac

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

Explain how the parts of the peripheral nervous system work with the central nervous system to produce a response to the stimulus