_____________ see in gray tones and _____________ see in color.
Fill in the blank(s) with the appropriate word(s).
rods; cones
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Which compound that was formerly used in building materials such as insulation has been found to be the cause of certain cancers and lung diseases?
A) radon B) asbestos C) lead D) PCBs
Which of the following are STDs
A. AIDS B. chlamydia C. endometriosis D. both AIDS and chlamydia E. both chlamydia and endometriosis
-phobia: __________
Fill in the blank(s) with correct word
T-independent antigens
are usually proteins. are able to bind multiple B cell receptors on a given B cell. may be polysaccharides or proteins, and are not able to bind multiple B cell receptors on a given B cell. are usually polysaccharides and able to bind multiple B cell receptors on a given B cell. are usually polysaccharides.