In all types of chemoreceptors, receptor cells develop receptor potentials in response to ________

A) changes in the movement of the surrounding molecules
B) the electrical properties of the surrounding cells
C) chemicals dissolved in a fluid such as blood or saliva
D) the addition of positively charged proteins


C

Biology & Microbiology

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The surface receptors on B and T cells both

A. play the same role in each type of cell. B. bind to free antigen. C. have two binding sites for antigen. D. have variable and constant regions. E. play the same role in each type of cell AND have two binding sites for antigen.

Biology & Microbiology

The different seasons of the year are caused by the

A. gravitational pull of the moon as it travels around the Earth. B. tilt of the Earth's axis as the Earth travels around the Sun. C. rotation of the moon around the Earth. D. rotation of the Earth on its axis. E. rotation of the Earth around the Sun.

Biology & Microbiology

Applications of DNA technology may result in negative effects, including

What will be an ideal response?

Biology & Microbiology

Which of the following steps in the folic acid synthesis pathway is specifically inhibited by sulfonamides?

A) the conversion of tetrahydrofolic acid to PABA B) the conversion of PABA to dihydrofolic acid C) the conversion of dihydrofolic acid to tetrahydrofolic acid D) the conversion of PABA to tetrahydrofolic acid E) the conversion of dihydrofolic acid to PABA

Biology & Microbiology