Why does the activity of the dynein motor proteins in an axoneme produce a "whip-like motion"?
A. The motor proteins are attached to the
outer microtubule doublets.
B. The motor proteins bind to an adjacent
outer microtubule doublet.
C. The outer microtubule doublets are all
connected through cross-linking proteins.
D. All of the above are correct.
D
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What is the role of DNA in living things?
DNA stores the information required to make proteins. DNA produces food for cells. DNA produces energy for cells. DNA directs the production of proteins.
Select the best response to the question. ?What significant development has decreased the incidence of epiglottitis?
A) the administration of the Haemophilus influenza type B (Hib) vaccine B) advances in airway management C) early recognition of the symptoms D) the development of effective antibiotics
When an ATP molecule is used to supply energy, which of the following occurs?
A. a phosphate bond is added B. oxygen is added C. oxygen is removed D. a phosphate bond is broken E. an adenine is added
A drop to pH 4.0 in the duodenum would primarily stimulate the release of ________.
A. gastrin B. insulin C. secretin D. pepsin E. cholecystokinin