Cancer cells
a. have altered plasma membranes.
b. have a lessened ability to attach to other
cells.
c. divide to produce high densities of cells.
d. show an amplified reliance on glycolysis.
e. exhibit all of these.
E
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Choose the letter of the best match from the following:A. hotspotB. habitat lossC. edge effectsD. megafaunal extinctionE. extinction vortexBecome an increasing problem as habitat size shrinks.
Fill in the blank(s) with the appropriate word(s).
The plant hormones known as ________ may have an evolutionary origin in the common ancestor to both plants and animals.
A. abscisic acids B. oligosaccharides C. auxins D. cytokinins E. brassinosteroids
Four of the five items listed below are related
to genetic information. Select the EXCEPTION.
a. chromatids b. centromere c. chromosome d. phosphorylation e. polymerase
Energy flow is one-way because ____
a. all of the energy in an ecosystem stays constant b. the amount of energy a producer harvests is equal to the amount of energy consumers consume c. with each energy transfer, some energy escapes as heat d. energy cannot be created but it can be destroyed e. there is only one form of energy