The presence of mitochondria in virtually all eukaryotic cells is attributed to the historical existence of bacterial endosymbionts which invaded ancestral eukaryotes. This explanation could be considered
a. mechanistic.
b. evolutionary.
c. both of these.
d. neither of these.
b
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Which sequence correctly traces the visual pathway followed by the majority of axons? a: Optic nerveb: Optic chiasmc: Occipital lobed: Lateral geniculate nucleus of thalamus
A. a, d, c, b B. b, a, d, c C. c, a, b, d D. a, b, d, c E. a, b, c, d
Two general categories of respiratory dysfunction yield abnormal results during spirometry: __________ lung disease and __________ lung disease
Fill in the blank(s) with correct word
A nephron consists of what two parts?
a) minor calyx and major calyx b) medulla and cortex c) renal corpuscle and renal tubule d) peritubular capillaries and vasa recta
The sympathetic division of the ANS has
A. long postganglionic axons. B. preganglionic neuron cell bodies in the T1-L2 regions of the spinal cord. C. norepinephrine as a transmitter substance. D. Two of the choices are correct. E. All of the choices are correct.