Below is a diagram of a bacterium. What structure does Y represent? 
Definitions:
Endowment
A donation or funding given to an institution or individual to provide income for ongoing support.
Private Colleges
Educational institutions not operated by government bodies; often funded through tuition, private contributions, and endowments.
Rejection Region
In hypothesis testing, the range of values for which the null hypothesis is rejected in favor of the alternative hypothesis.
Test Statistic
A test statistic is a calculated value from sample data, used in statistical hypothesis testing to determine the likelihood of a given hypothesis.
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