Answer the following questions true (T) or false (F)
1. Immature B lymphocytes undergo clonal deletion in the bone marrow.
2. CTLs use the CD95 molecule to recognize their epitope.
3. Cytokines are soluble regulatory proteins that act as intercellular signals and include substances such as interleukins, interferon, and growth factors.
1. TRUE
2. FALSE
3. TRUE
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Steroid hormomes are an example of an effector which regulates regulatory transcription factor activity
Indicate whether the statement is true or false
When water ionizes, it produces equal amounts of hydrogen and hydroxide ions that can reassociate with each other. The pH of water is:
A. 3 B. 4 C. 5 D. 6 E. 7
Which essential element is found in ATP and nucleic acids? a. Calcium b. Sodium c. None of these choices
d. Manganese e. Phosphorus
Soy sauce, olives, pickles, sour cream, and yogurt are produced using lactic acid formed during fermentation.
a. true b. false