Respiration in adult terrestrial insects is achieved by way of:
A. gills
B. tracheae
C. book lungs
D. passage of respiratory gases through the cuticle
E. Malphigian tubules
B. tracheae
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Genes that are always "turned on" in a cell are referred to as
A) regulated genes. B) mutations. C) inducible. D) constitutive. E) catabolic.
Four of the five answers listed below are characteristics of an unchanging, nonevolving population. Select the exception
a. random mating b. no mutations c. low survival rate d. no migration or gene flow e. infinitely large population
The unit of measurement in an ecological footprint is the ___
a. carbon hectare b. global unit c. global hectare d. ecological hectare e. a and d
The asexual spores of molds are classified according to their
A. size. B. type of metabolism. C. number of chromosomes. D. shapes. E. mode of development.