Which blood group is the universal donor? - -Correct answer-Type O
A universal blood donor has type O, universal aceptor is type AB.
Blood oxygen levels are most likely low when blood _________. - -
Correct answer-fills the right atrium
An intracellular chemical signal can be produced in the cell
membrane. Once it is produced, where does it go? - -Correct answer-
To another part of the same cell
After food has been masticated in the oral cavity, where does it go
next? - -Correct answer-pharynx
The diffusion of nutrients through the walls of the digestive system is
critical to homeostasis in the body. Where does the majority of this
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diffusion take place in the digestive system? - -Correct answer-small
intestine
As soon as an invader, known as a(n) _____, enters the body, the
body begins to fight. - -Correct answer-pathogen
Where is skeletal muscle found? - -Correct answer-attached to bones
If a person smells something sweet, what form of information is this
initially perceived as in the nervous system? - -Correct answer-
sensory
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? - -Correct answer-
sympathetic
Which of the following types of tissues include cells of the immune
system and of the blood? - -Correct answer-connective tissue
Which best describes homeostasis? - -Correct answer-A relatively
constant environment within the body
Fertilization (the fusing of one sperm and an ovum) results in a(n)
_________. - -Correct answer-zygote
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