Arthropods having two pairs of antennae belong to the subphylum:
a. Chelicerata.
b. Insecta.
c. Crustacea.
d. Pycnogonida.
e. Cirrepedia.
C
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Which is incorrect about Mycoplasma pneumoniae?
A. After 2 to 3 weeks, develops into an unproductive cough and earache B. Has birds as a reservoir C. Initially causes fever, malaise, sore throat, and headache D. Is a bacterial cell without a cell wall E. Common cause of primary atypical pneumonia
Single-celled or colonial protists that have a two-part silica shell and are often photosynthetic are called ________
a. diatoms b. flagellated protozoans c. amoebas d. green algae
Self-recognition is based on T cell receptors recognizing:
a. MHC markers b. perforins c. complement d. naive B cells e. antibodies
Chitin, a modified form of cellulose, is not only cross-linked with proteins but its glucose units are modified with atoms of
A. nitrogen. B. hydrogen. C. phosphorous. D. sulfur. E. oxygen.