Which of the following statements about pre-transcriptional regulation is false?
A) It allows organisms to rapidly respond to frequent and dramatic changes in the environment.
B) It is the one way cells can manage to control protein synthesis.
C) It helps cells control when transcription occurs.
D) It is managed by transcription factors.
E) It helps cells control how often transcription occurs.
Answer: B
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Oxygen has an atomic number of 8. This
means that oxygen has 8
a. electrons in its outer most shell. b. neutrons in its nucleus. c. protons and 8 neutrons in its nucleus. d. protons in its nucleus. e. neutrons in its outer shell.
The physical fragmentation of organic matter into smaller pieces is achieved primarily by invertebrate detritivores
Indicate whether the statement is true or false
Cri-du-chat syndrome babies are mentally challenged and have an abnormal larynx that makes sounds like the cry of a cat. This disorder is due to a/an:
A) duplication in chromosome 7. B) trisomy 21. C) deletion in chromosome 5. D) translocation between chromosome 9 and 22. E) inversion in chromosome 2.
The process in succession in which the actions of early-arriving species enable the success of later-arriving species is:
A) mutualism. B) coevolution. C) mimicry. D) facilitation.