During action potiental transmission, many ions cross the neuronal membrane at right angles to the membrane. what is it that travels along the membrane and acts as the signal?

Hepatitis b and hiv/aids are two serious infections that can be transmitted by a. breastfeeding and contact with blood. b. sharing food and sharing drinks. c. transmission by air, water, and shared bodily fluids. d. skin contact, contact with urine, and sharing clothing.

Using a muscle's full range of motion will result in which of the following? a. muscle imbalance b. increased strength to the entire muscle c. the muscle not being strengthened d. reduced joint flexibility

Which of the following human diseases is caused by a virus that requires reverse transcriptase to transcribe its genome inside the host cell? a) herpesb) aidsc) smallpoxd) influenza