Where are cytochromes located?
What will be an ideal response?
In the inner membrane of the mitochondria
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A particular neuron does not release neurotransmitters into the synaptic cleft. Further investigation shows that this cell does not respond to calcium ions that are necessary for t- and v-SNARE complex interaction. The most likely problem is associated with the function of
A) synaptic boutons. B) acetylcholinesterase. C) synaptotagmin. D) GABA receptors. E) calcium ions.
A chemical or physical agent that causes mutations is called a
A) mutator. B) tautomer. C) teratomer. D) mutagen.
Many tropical ferns live on other plants without withdrawing nutrients from them. These ferns are said to be ____
a. epiphytes
b. bryophytes c. parasites d. pathogens e. saprophytes
Which of these statements best describes gene expression in a damaged cell?
A) In a damaged cell, p53 is low and BAX transcription is inactive, so Bcl-2 represses apoptosis. B) In a damaged cell, p53 is high and BAX transcription is active, so Bcl-2 is repressed and apoptosis is induced. C) In a damaged cell, p53 is low and BAX transcription is active, so Bcl-2 represses apoptosis. D) In a damaged cell, p53 is low and BAX transcription is active, so Bcl-2 is repressed and apoptosis is induced. E) In a damaged cell, p53 is high and BAX transcription is inactive, so Bcl-2 is activated and apoptosis is induced.