All vertebrates cannot synthesize certain polyunsaturated fats and must obtain them in the diet.
Answer the following statement true (T) or false (F)
True
All vertebrates cannot synthesize certain polyunsaturated fats and must obtain them in the diet.
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How many chromosomes would be found in the karyotype of a Down syndrome female?
A. 47 B. 45 C. 46 D. 44
Some ecologists have proposed that gaps created by disturbances lead to habitat heterogeneity, which, in turn, leads to the coexistence of greater numbers of tree species in tropical habitats, as compared to temperate habitats. Which of the following hypotheses is most closely associated with this proposal?
A) Red Queen hypothesis D) intermediate disturbance hypothesis B) character displacement hypothesis E) energy-diversity hypothesis C) Hamilton-Zuk hypothesis
During electron transport, excess amount of protons is transported into the cell
a. true b. false
A species whose absence would bring about major changes in a community is called a ________
Fill in the blank(s) with correct word