Where are ocelli found?
a. in planaria only
b. in arthropods only
c. in planaria, some insects, some arthropods, and some molluscs
d. in insects only
Ans: c. in planaria, some insects, some arthropods, and some molluscs
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Natural killer cells secrete ________, which forms pores in the membrane of infected or abnormal cells.
A) perforins B) cytokines C) pyrogens D) C-reactive protein E) interferon
Buffers ________.
a) will only lower the pH b) will only increase the pH c) are strong acids or bases d) help keep the pH within normal limits
A group of medications that induce stimulation of the central nervous system are _______________.
Fill in the blank(s) with the appropriate word(s).
Which are true statements about anaerobic respiration? Check all that apply.
A. lactate may be produced B. a large amount of ATP is produced C. ethanol may be produced D. the reactions happen in the mitochondria E. the reactions happen in the cytoplasm F. CO2 is produced G. NADH is produced