In a Chi-square test, as the value of the ?2 increases, the likelihood of rejecting the null hypothesis ________
A) decreases
B) increases
C) is doubled
D) stays the same
E) increases by a factor of 10
Answer: B
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Where would a coral reef most likely be found?
A. In the deep sea B. In an estuary C. In the warm tropical waters where the sun can penetrate D. In the oceanic benthic realm below the continental shelf
Tamoxifen is a drug that is used to treat breast cancer. It inhibits the activities of the estrogen receptor in breast epithelial cells, which are the cells that are relevant to breast cancer. One of the concerns that scientists had during the development of Tamoxifen as a therapy for breast cancer was that other cell types require estrogen signaling for their function. For example, it is known
that cells in bone tissue require estrogen signaling. As a result, there was a concern that use of Tamoxifen would lead to bone loss in patients. In reality, however, researchers were surprised to find that Tamoxifen actually led to an increase in bone density in breast cancer patients. At the same time, Tamoxifen did inhibit the activity of the estrogen receptor in breast epithelial cells in these patients. What is the best explanation for this finding? A. Tamoxifen binds different parts of the estrogen receptor in different tissues. B. The estrogen receptor is bound to different coactivators in different tissues. C. Tamoxifen can only enter certain cell types. D. Bone cells make use of a different type of estrogen receptor that does not bind to Tamoxifen.
The light-dependent generation of NADPH is referred to as ________
Fill in the blank with correct word.
In Down syndrome, the Dart gene causes mental impairment by increasing the levels of pyrimidines in the blood
a. true b. false