If you were designing a method to specifically inhibit prokaryotic transcription, but not eukaryotic transcription, interfering with which of the following would work best?
A) an intercalating agent
B) recognition of the promoter region
C) DNase activity
D) RNA polymerase II activity
E) ribosomal binding
B) recognition of the promoter region
C) DNase activity
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Interferons beta and alpha are released from ________ and act to inhibit viral replication by ________.
A) phagocytotic cells : degrading RNA B) infected cells : degrading RNA C) T lymphocytes : degrading RNA D) neutrophils : digesting the virus E) phagocytotic cells : digesting the virus
Which of these animals has a heart with only two chambers?
A) Hummingbird B) Cat C) Human D) Goldfish E) Bullfrog
One of the most critical adaptations of the reptiles in relation to their life on land is the evolution of the
A. chorionic egg. B. allantois egg. C. swim bladder. D. diploid egg. E. amniotic egg.
Answer the following questions true (T) or false (F)
1. The brain and the spinal cord make up the central nervous system (CNS). 2. Any nerve that carries messages from the brain and spinal cord is an afferent division of the PNS. 3. Voluntary movement of the legs is controlled by the somatic nervous system.