If one is testing a goodness of fit to a 9:3:3:1 ratio, how many degrees of freedom would be associated with the Chi-square analysis?

What will be an ideal response?


number of classes minus 1 = 3

Biology & Microbiology

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Indicate the cell types that are most likely involved in tissue rejection.

A. Cytotoxic T cells B. Macrophages C. T helper cells D. B cells E. Neutrophils

Biology & Microbiology

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

Biology & Microbiology

Explain how mitochondrial DNA studies of Africans and Europeans support the replacement model for the evolution of modern humans.

What will be an ideal response?

Biology & Microbiology

When NADH or NADPH transfers electrons to a recipient molecule, the recipient becomes reduced and the activated carries are oxidized (NAD+ or NADP+, respectively). What else happens during this reaction?

A.) a phosphate group is transferred to the recipient molecule B.) a proton is take up by the carrier C.) a proton is released into the solution D.) a proton is taken up by the recipient molecule E.) a molecule of water is released into the solution

Biology & Microbiology