Science Questions & Answers
Which blood group is the universal donor? - ANSWERSType O
A universal blood donor has type O, universal aceptor is type AB.
Blood oxygen levels are most likely low when blood _________. - ANSWERSfills the
right atrium
An intracellular chemical signal can be produced in the cell membrane. Once it is
produced, where does it go? - ANSWERSTo another part of the same cell
After food has been masticated in the oral cavity, where does it go next? -
ANSWERSpharynx
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? - ANSWERSsmall intestine
As soon as an invader, known as a(n) _____, enters the body, the body begins to fight.
- ANSWERSpathogen
Where is skeletal muscle found? - ANSWERSattached to bones
If a person smells something sweet, what form of information is this initially perceived as
in the nervous system? - ANSWERSsensory
While hiking, a person is startled after encountering a bear. Her palms get sweaty and
her heart starts racing. Which part of her nervous system was directly stimulated? -
ANSWERSsympathetic