The tropical rainforest trees form shallow roots concentrated near the surface in a mat few centimeters
thick. These swollen bases or braces are called:a.
prop roots.
b. pneumatophores.
c. aerial roots.
d. buttress roots.
e. velamen roots.
D
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Acetic acid gives vinegar its sour taste. Which functional group has acidic properties and would release hydrogen ions in an aqueous (water) solution?
A. -OH B. -NH2 C. -SH D. -COOH E. -CO
The polymerase chain reaction is used to
A. amplify certain sections of DNA. B. amplify mRNA. C. produce proteins. D. produce long polymers of carbohydrates to be used in electrophoresis.
Similar structures that have evolved
independently in different lineages that do not share common ancestry are called
a. analogous structures. b. homologous structures. c. vestigial structures. d. repeating structures. e. heterozygous structures
Which of the following are called bone-building cells and secrete the components of the matrix?
A. Red marrow B. Osteoblasts C. Osteocytes D. Osteoclasts E. Yellow marrow