One function performed by astrocytes is to:
a. form myelin sheaths
b. induce synapse formation
c. circulate cerebral spinal fluid
d. phagocytize bacteria
e. transmit action potentials
b
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Exchange of genetic material among different species is called
A. homolgous gene exchange. B. horizontal gene transfer. C. exon shuffling. D. genetic recombination. E. exon shuffling and or genetic recombination.
Invertebrates on land use __________ or
__________ systems for gas exchange. Fill in the blank(s) with the appropriate word(s).
Compared with plants growing in shade, plants growing in sunlight tend to have smaller
A) stems. B) roots. C) leaves. D) flowers.
To reproduce sexually, bryophytes require
A. insect pollination. B. solar energy. C. high temperatures. D. free water external to the plant.