________ are the polysaccharide portion of some protein glycans, which are characterized by repeating disaccharide units.
Fill in the blank(s) with the appropriate word(s).
Glycoaminoglycans (GAGs)
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The radius and ulna are considered to be part of ____
a. both the axial skeleton and the appendicular skeleton b. the axial skeleton only c. neither the axial skeleton nor the appendicular skeleton d. the appendicular skeleton only e. the axial or appendicular skeleton depending on the animal
An embryo sporophyte surrounded by nutritive tissue and then a tough, protective outer coat makes up
a(n) ____ that shelters the embryo from drought, cold, and other adverse conditions.
a. pollen grain b. spore c. ovule d. seed e. strobilus
The abundant remains of ammonites in Oklahoma indicate that Oklahoma was
A. always a semi-arid grassland. B. once a vast desert with almost no rainfall. C. once a part of a mountain range that has now eroded. D. once covered by a shallow ocean. E. part of a vast tropical forest.
Both Lycopodium and Equisetum have strobili, roots, and rhizomes. What did you learn in this exercise that enables you to distinguish these two plants?
What will be an ideal response?