Lamellipodia
A) are found in the basal lamina.
B) add structural rigidity to cells.
C) contain microtubules.
D) are thin sheets of cytoplasm use for cell movement.
E) do not involve actin or tubulin.
D) are thin sheets of cytoplasm use for cell movement.
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Based on the principle of species individuality, how would you predict that climate change would affect the geographical range of species within a community?
A. Each species would shift its range in a unique manner, according to its physiological needs. B. All species in the community would migrate together as a "superorganism", because all species are connected. C. Assemblages of species would migrate together in predictable groups. D. Only the competitively dominant species would shift their ranges; less competitive species cannot adapt to climate changes.
Natural killer cells are capable of which of the
following?
a. stimulating T cell memory b. killing bacteria in the interstitial fluid c. destroying body cells lacking MHC d. shutting down adaptive immune responses e. destroying parasites in the blood stream
A plasmid such as an F factor that is capable of integrating into the bacterial chromosome is a(n)
A) prophage. B) episome. C) auxisome. D) perisome. E) elaiosome.
Human genetics can be effectively studied using:a
offspring raised under controlled conditions. b. experimental matings between true-breeding strains. c. controlled matings. d. population studies of large extended families. e. population studies of small extended families.