Bilateral symmetry is characteristic of a(n) ____
a. cnidarian
b. roundworm
c. echinoderm
d. corals
e. flatworm
ANSWER: e
You might also like to view...
The receptors for steroid hormones are located inside the cell instead of on the membrane surface like most other signal receptors. This is not a problem for steroids because _____
A) the receptors can be readily stimulated to exit and relocate on the membrane surface B) steroids do not directly affect cells but instead alter the chemistry of blood plasma C) steroid hormones are lipid soluble, so they can readily diffuse through the lipid bilayer of the cell membrane D) steroids must first bond to a steroid activator, forming a complex that then binds to the cell surface
Coral bleaching where the photosynthetic endosymbiont is lost or becomes non-functional can be caused by temperature increases as small as 2oC.
Answer the following statement true (T) or false (F)
An organism in an ecosystem that feeds off others is a(n) ____
a. heterotroph b. producer c. autotroph d. photosynthetic organism e. plant
TCA cycle enzymes are found in the ________ ________ of eukaryotic cells.
Fill in the blank(s) with the appropriate word(s).