Human milk contains _____.
A. calcium only
B. antibodies only
C. calcium and protein, but not antibodies
D. sugar and calcium, but not protein
E. calcium, antibodies, sugar, and protein
Answer: E
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____ is the study of a species' evolutionary history
a. Natural selection b. Taxonomy c. Microevolution
d. Phylogeny e. Convergent evolution
Plastic bags may still be intact after
a. 100 years. b. 500 years c. 40?50 years. d. 300 years e. 75?100 years
The presence of the immune complexes leads to the activity of the neutrophils. What factor links these two?
A. complement B. cytokines C. mast cells D. helper T cells
Which are short, hair-like structures that project from the surface of the cells?
a. Flagella b. Intermediate filaments c. Microtubules d. Centriole e. Cilia