Common commercial benefits of microorganisms include synthesis of
A) riboflavin.
B) acetone.
C) insulin.
D) aspirin.
E) riboflavin, acetone and insulin.
E
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Plant hormones called ________ form in roots and travel to shoots where they induce cell divisions in the apical meristem
a. abscisic acid (ABA) b. auxins c. gibberellins d. cytokinins
Molybdenum has an atomic number of 42. Several common isotopes exist, with mass numbers from 92-100. Which of the following can be true?
A) Molybdenum atoms can have between 50 and 58 neutrons. B) Molybdenum atoms can have between 50 and 58 protons. C) Molybdenum atoms can have between 50 and 58 electrons. D) Isotopes of molybdenum have different numbers of electrons.
A biologist discovers two populations of wolf spiders whose members appear identical. Members of one population are found in the leaf litter deep within a woods. Members of the other population are found in the grass at the edge of the woods. The biologist decides to designate the members of the two populations as two separate species. Which species concept is this biologist most closely utilizing?
A) ecological B) biological C) morphological D) paleontological E) phylogenetic
In the accompanying diagram, ____ is responsible for storing bile
a. F b. G c. H d. I e. J