During visual accommodation in mammals the ________ changes shape to focus light on the retina for a clear visual image
a. iris
b. pupil
c. lens
d. cornea
c
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An increase in the number of chromosomes present in an organism is known as
A. polyploidy. B. gene flow. C. convergent evolution. D. punctuated equilibrium.
Why is there a synaptic delay in gustatory receptors that is not seen in olfactory receptors?
a) gustatory receptors have a different threshold from olfactory receptors b) gustatory receptors have a separate cell & sensory neuron c) gustatory receptors have non-excitable membranes d) olfactory receptors have a different threshold
Which of the following diseases is NOT caused by a Rickettsia species?
a. human monocytic ehrlichiosis b. Rocky Mountain spotted fever c. typhus d. Q fever
The swim bladder is an organ in primitive fish from which the lungs of terrestrial vertebrates developed.
Answer the following statement true (T) or false (F)