The process of cell specialization within a multicellular organism is 

A. cancer.
B. cytokinesis.
C. mitosis.
D. determination.


D. determination.

Biology & Microbiology

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A site where a substrate binds to an enzyme

A) Polarity B) Compound C) Denaturation D) Monosaccharides E) Hydrogen bonds F) Element G) Triglycerides H) Amino acids I) Tertiary structure J) Active site

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Amino acid sequences that are rich in lysine and protrude from the histone proteins in the nucleosome are called "tails."

A. true B. false

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Meiosis in female humans is completed

a. before birth. b. shortly after birth. c. during the ovarian cycle. d. at fertilization. e. when a woman is fully mature

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During a human pregnancy, implantation

occurs at which stage?

a. zygote b. early cleavage c. blastocyst d. gastrula e. embryo

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