A usual result from having a model that has imperfect multicollinearity is that:
A. coefficient estimates are negative.
B. coefficient estimates are large.
C. standard errors for coefficient estimates are large.
D. coefficient estimates are positive.
Answer: C
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Which of the following reactions would you predict could be coupled to ATP hydrolysis to ADP + Pi to make it energetically favorable, or spontaneous? Choose all that apply
A. creatine phosphate + H2O creatine + Pi, G -10.3 kcal/mol B. phosphoenolpyruvate + H2O pyruvate + Pi, G -14.8 kcal/mol C. glucose 6-phosphate + H2O glucose + Pi, G -3.3 kcal/mol D. glucose 1-phosphate + H2O glucose + Pi, G -5.0 kcal/mol E. glutamic acid + NH3 glutamine, G +3.4 kcal/mol
Fungal diseases are usually divided into ________ groups according to the level of infected tissue and the mode of entry into the host.
Fill in the blank(s) with the appropriate word(s).
The smallest branches of ____ end with a large flame cell
a. nephrons b. hepatic tubules c. metanephridia d. Malpighian tubules e. protonephridia
After considerable effort, you are able to collect and analyze DNA from the winged animal. You obtain the nucleotide sequence of the cytochrome c oxidase gene. When you compare this sequence to the sequence of the same gene in a bat, a rodent, a shrew,
and a human, you find the following numbers of differences: winged animal-bat 11 differences winged animal-rodent 14 differences winged animal-shrew 15 differences winged animal-human 9 differences Which hypothesis does this data support? A) Of the mammals tested, the winged animal is probably most closely related to humans. B) Of the mammals tested, the winged animal is probably most closely related to shrews. C) The winged animal is probably most closely related to bats, because bats also have wings. D) Of the mammals tested, the winged animal is probably most closely related to rodents.