True/False: There are no antigens that can stimulate B-cells directly.
What will be an ideal response?
False
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When fat enters the duodenum, it stimulates release of which hormone?
a. amylase b. cholecystokinin c. gastrin d. secretin e. trypsin
You are examining an animal in lab which you do not recognize immediately, but dissection shows that it has a backbone and a two-chambered heart, so you classify it among the
A. amphibians. B. reptiles. C. birds. D. fish. E. mammals.
Which description applies to typical quantitative traits?
A) Such traits are easy to follow using Punnett squares. B) Such traits are not affected by the environment. C) Such traits are usually influenced by only one gene. D) Such traits show continuous variation.
Which of the following is a reason why estimating the slope and intercept of a simple linear regression line using the least absolute deviations (LAD) approach is not as common as OLS?
A. LAD suffers from heteroskedasticity. B. The solution for LAD isn't always unique. C. The objective function for LAD is less intuitive than for OLS. D. Taking the absolute value of residuals in most software programs is difficult.