Gamma globulin can be given as immunotherapy to confer artificial passive immunity.
Answer the following statement true (T) or false (F)
True
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What internal process helps plants to keep their movements and other responses synchronized with the day-night cycle?
A. Auxin cycling B. Gravitropism C. A circadian clock D. Purine monitoring E. Solar tracking
Natural selection ________.
A. prepares organisms for future changes in the environment B. results in evolutionary adaptation C. is a very rare phenomenon D. does not affect allelic frequencies
Which of the following DNA regions is recognized by RNA polymerase during transcription?
A) promoter B) operator C) attenuator D) leader E) structural gene
All of the following statements regarding stem cells are true, EXCEPT
A. Embryonic stem (ES) cells differentiate into pluripotent cells. B. Pluripotent stem may be reverse-engineered from adult stem cells. C. Totipotent stem cells differentiate into embryonic stem cells. D. Totipotent stem cells may differentiate into placental cells. E. Totipotent stem cells may only be harvested from the blastocyst stage.