Which is the smallest of all levels of organization?
A. atom.
B. cell.
C. organ.
D. organism.
E. population.
A. atom.
You might also like to view...
The ________ and ________ domains of the class II MHC protein interact to form a peptide-binding site
A) B / T B) light / heavy C) C / V D) ?1 / ?1
The scientific name of an organism includes its
A. family and genus. B. first name and last name. C. genus and species. D. domain. E. genus and species AND domain.
Which of the following comparisons between the moss life cycle and fern life cycle are valid?
_____ Mosses have flagellated sperm that need water the reach the female gamete, while the sperm of ferns are unflagellated and are not dependent on water. _____ The sporophyte generation is smaller than the gametophyte generation in mosses, but the sporophyte generation is much larger than the gametophyte generation in ferns. _____ The spores are produced in capsules on stalks in mosses but in small structures called sori on the underside of leaves in ferns. _____ The gametes are produced in gametangia in mosses but in specialized structures on the underside of leaves in ferns. _____ Both kinds of plants depend on wind for dispersal of spores.
Which of the following is considered a key human made contributor to global warming?
a. carbon dioxide b. hydrochlorofluorocarbons c. nitrous oxide d. ethane e. surface ozone