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
D
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The hallmark feature of peroxisomal diseases is the presence of
A) hydrolases. B) very long chain fatty acids. C) long chain gangliosides. D) an abundance of myelin. E) amyloid plaques.
Which disorder is more common among the babies of older mothers?
A) Turner syndrome B) Klinefelter syndrome C) Trisomy X D) XYY syndrome E) Down syndrome
Many vitamins are important ________ of enzymes
A) protein cofactors B) coenzymes C) allosteric inhibitors D) competitive inhibitors E) activators
It is possible for a plant to have flowers that are both incomplete and perfect.
Answer the following statement true (T) or false (F)