Arthropods (Crustaceans, spiders, insects, millipedes, centipedes) have this kind of skeleton that surrounds all other organs.
A. endoskeleton
B. exoskeleton
C. bony skeleton
D. cartilaginous skeleton
B. exoskeleton
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Altering the three-dimensional structure of an enzyme might
A. change the amount of energy needed for a reaction. B. prevent the substrate from binding the enzyme's active site. C. change the type of substrate that binds the enzyme's active site. D. change the type of product produced in the reaction. E. allow the reaction to occur at a faster rate.
The Hardy-Weinberg rule is
a. useful in determining the extent to which a sexually reproducing population is evolving. b. used to predict when genetic drift will occur in a sexually reproducing population. c. useful in determining the extent to which polyploidy is occurring in specific plant populations. d. used to predict when specific groups of organisms will become extinct. e. all of these.
The primary difference between simple and facilitated diffusion is that facilitated diffusion requires a membrane protein to act as a channel or carrier for a substance while simple diffusion means substances can slip through the lipid bilayer without a channel or carrier being needed.
a. true b. false
Which domain(s) consist(s) of prokaryotic cells?
A) Bacteria only B) Eukarya only C) Archaea and Eukarya D) Bacteria and Archaea