Gram stain is used to distinguish between different
a. bacteria.
b. protistans.
c. dinoflagellates.
d. all of the above.
d
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The transplant of pig bone marrow into a human recipient may overcome the ____________________ triggered by transplanted pig organs
Fill in the blank(s) with correct word
The first flowering plants, true mammals, and true frogs appeared during the _____ period.
A. Cambrian B. Jurassic C. Cretaceous D. Triassic E. Permian
A scientist is trying to coax stem cells to differentiate into muscle to use as a therapy for muscular dystrophy. He looks at his Petri dish and is excited to see the cells contracting! The cells appear striated and multinucleate. What type of muscle are they?
A. Skeletal muscle B. Cardiac muscle C. Smooth muscle D. Involuntary muscle
How does rhodopsin facilitate vision?
a. When light strikes rhodopsin, the bipolar cells becomes depolarized, causing the release of GABA. b. When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of GABA. c. When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of GABA. d. When light strikes rhodopsin, the photoreceptor becomes depolarized, causing the release of glutamate. e. When light strikes rhodopsin, the photoreceptor becomes hyperpolarized, causing the release of glutamate.