What is a nonnative species that evolved in one community, then dispersed from its home and became established elsewhere?
a. founder species
b. pioneer species
c. keystone species
d. exotic species
e. a species with character displacement
d
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Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the
other 8 are small. What does this tell you about this protein's structure?
a. It is an example of a protein having quaternary structure. b. The protein has tertiary structure and domains but no quaternary structure. c. The primary sequence of all 16 subunits is identical, which is a unique property of enzymes participating in photosynthesis. d. The subunits each have 8 alpha helices in order to bind to CO2 and RuBP. e. It's an enzyme that is extremely resistant to denaturation.
Hemophilia is not seen in individuals heterozygous for the hemophilia gene. Thus, the disease is ________.
a. recessive b. codominant c. dominant d. X-linked
Hydroxyapatites (mineral salts), bone is half as strong as steel in resisting compression and as strong as steel in resisting tension. Lasts long after death because of mineral composition. Can reveal information about ancient people.
What will be an ideal response?
As habitats are fragmented and consequently shrinking in size, a major problem is
A. introduced species. B. overexploitation. C. the edge effect. D. lack of corridors.