The adjective that best describes homeostasis in living organisms is
a. rigid.
b. biological.
c. dynamic.
d. chemical.
e. physical.
C
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To remove noncoding sequences in the pre-mRNA of eukaryotes, multiple snRNPs combine with proteins to form a larger complex called the ___________ .
A. 5' cap B. introsome C. ribosome D. spliceosome E. 3' poly-A tail
When analyzing the sequence of genes similar to ones already known, why is the amino acid sequence of the protein more important than the DNA sequence?
What will be an ideal response?
All communicable diseases ________.
A. are contagious B. are caused by microorganisms or their products C. only occur in animals D. are caused by vectors E. involve viruses as the pathogen
Which of the following is not a role played by NADH in cellular respiration?
It powers proton pumps. It transfers electrons. It is involved in redox reactions. It oxidizes pyruvate. It accepts electrons and hydrogen ions.