Which of the following is true for testing a hypothesis?
A. Design an observational or experimental study that is capable of testing those hypotheses.
B. State the hypothesis as precisely as possible and list the predictions it makes.
C. Both of the above
D. None of the above
Ans: C. Both of the above
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The study of body plans and structures among groups of organisms is called
a. homologous structures. b. analogous structures. c. comparative morphology. d. morphological convergence. e. morphological divergence.
The cerebral hemispheres communicate with each
other by means of the a. cerebral cortex. b. corpora cardiaca. c. corporothalamus. d. corpus callosum. e. centrosome.
A deletion occurs when a piece of chromosome breaks off and is lost
Indicate whether the statement is true or false
Adaptive immunity is sometimes also called acquired immunity. Which of the following statements provides a basis for the alternative name?
A. Lymphocytes of the adaptive immune system are highly specific for a single epitope. B. Activated lymphocytes produce daughter cells that are identical in specificity and function. C. To become activated, lymphocytes require exposure to the epitope for which they are specific. D. Activated lymphocytes may persist for years in the body. E. Lymphocytes reactive to normal body components are removed.