After ejaculation sperm can live for up to ________
a. 106 hours
b. 12 hours
c. 48 hours
d. 72 hours
e. 24 hours
d
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Ribozymes are non-protein molecules with catalytic activity
Indicate whether this statement is true or false.
Which is arranged in proper order from largest to smallest?
A. algal cell, bacterial cell, virus B. virus, bacterial cell, animal cell C. animal cell, virus, plant cell D. plant cell, animal cell, fungal cell
Western blotting uses antibodies to detect specific proteins in a mixture of proteins
Indicate whether the statement is true or false
In the dichotomous regression if one was to replace the regression line prediction of the outcome means (for treated/untreated) with medians, which of the following conditions would hold?
A. The sum of all the residuals would equal zero. B. The slope of the regression line would be positive. C. The sum of the residuals for the treated observations would equal zero. D. The number of strictly positive residuals would equal the number of strictly negative residuals.