Influenza virus adheres to the epithelium of the respiratory system with the aid of ________ and ________ found in its envelope spikes.
What will be an ideal response?
neuraminidase, hemagglutinin, Neuraminidase, Hemagglutinin
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Organisms develop a normal morphology because cells can receive and interpret
A. extracellular positional information. B. intracellular positional information. C. both extracellular and intracellular positional information. D. signals from other developing organisms. E. all of the signals described in the choices.
How does water move so rapidly across plant cell membranes, and why are red blood cells so
important to the process?
What will be an ideal response?The structure labeled 3 in Figure 51-2 is the:
a. archenteron.
b. endoderm.
c. mesoderm.
d. blastocoel.
e. ectoderm..
Select the following phylum that includes coelomate, bilaterian animals that have a structure called a notochord.
A. Echinodermata B. Mollusca C. Chordata D. Annelida E. Arthropoda