In an ATP molecule, the phosphates are bonded to the adenine ring.
Answer the following statement true (T) or false (F)
False
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How can epidemiologist differentiate between common-source and host-to-host epidemics based only on the incidence of disease?
What will be an ideal response?
During normal DNA replication, part of the DNA at the ends of linear chromosomes is not copied into
the new DNA strands because
a. DNA ligase cannot join pieces at the end of a chromosome. b. RNA primers at the beginning of a new strand cannot be replaced with DNA. c. those ends are Okazaki fragments that are lost. d. cells do not need the DNA at the ends of chromosomes. e. the ends of chromosomes are made of protein, not DNA.
Compare and contrast GPCR and RTK receptors with respect to (a) structure–especially the transmembrane region, (b) activation mechanism, (c) initial signal transduction across the membrane
What will be an ideal response?
The bacterial A-B toxins often consist of a two-chain molecule. The 'B chain' promotes entry of the bacteria into cells, and the 'A chain' has inhibitory activity against some vital function.
a. true b. false