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, 1. Which blood group is the universal donor? - Answers-Type O
2. A universal blood donor has type O, universal aceptor is type AB.
3. Blood oxygen levels are most likely low when blood _________. - Answers-
fills the right atrium
4. An intracellular chemical signal can be produced in the cell membrane.
Once it is produced, where does it go? - Answers-To another part of the
same cell
5. After food has been masticated in the oral cavity, where does it go next? -
Answers-pharynx
6. The diffusion of nutrients through the walls of the digestive system is
critical to homeostasis in the body. Where does the majority of this
diffusion take place in the digestive system? - Answers-small intestine
7. As soon as an invader, known as a(n) _____, enters the body, the body
begins to fight. - Answers-pathogen
8. Where is skeletal muscle found? - Answers-attached to bones
9. If a person smells something sweet, what form of information is this initially
perceived as in the nervous system? - Answers-sensory