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