The process of ____ describes cell specialization structure and gene activity
a. morphogenesis
b. determination
c. differentiation
d. maturation
e. growth
c
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Chemical signals such as __________ have roles in social communication.
Fill in the blank(s) with the appropriate word(s).
The human population is expected to double in about ________ years.
A. 60 B. 15 C. 25 D. 91
What happens to the ovary after fertilization in angiosperms?
A. It becomes the fruit. B. It dies. C. It forms the seed coat. D. It becomes food for the embryo inside the seed.
Researchers are interested in the genomes of prokaryotic species for all of the following reasons EXCEPT that
A. bacteria cause many diseases that affect people, plants, and animals. B. the origin of the first eukaryotic cell probably involved a union between an archaeal and a bacterial cell. C. bacteria reveal modes of infection. D. bacteria are more highly advanced than humans. E. All of the choices are reasons for studying genomes of prokaryotic species.