The electrons removed during glycolysis and the Kreb cycle are carried to the electron transport chain by
A. NADH2 and glucose.
B. NADH and FADH2.
C. NADP and FADH2.
D. NADH and NADP.
E. NADP and glucose.
B. NADH and FADH2.
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One function of the 3' UTR (untranslated region) of mRNA is to ____
a. control the half-life of mRNA b. bind RNA polymerase to initiate transcription c. help activators bind to the enhancer region d. base pair with the translated region of the transcript to mark it for degradation e. bind ribosomes to initiate translation
In the process of transcription, _____.
A. proteins are synthesized B. mRNA attaches to ribosomes C. DNA is replicated D. RNA is synthesized
When chromosomes fail to separate at either the first or second meiotic division, this
a)is known as crossing over. b)results in a sperm or egg cell with an abnormal number of chromosomes. c)is known as translocation. d)results in a failure to produce gametes. e)results in arrest during meiosis.
The role an organism plays within its ecosystem is called its ________.
Fill in the blank(s) with the appropriate word(s).