The chemoreceptors that are responsible for the sense of taste are located mainly on the tongue in structures called __________.
Fill in the blank(s) with correct word
Answer: taste buds
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Na+ ion concentrations are higher outside the cell than inside the cell. What type of transport system is required to move Na+ ions in and out of the cell?
A. Na+ moves into the cell by facilitated diffusion and out of the cell by active transport B. Na+ moves in and out of the cell by passive diffusion C. Na+ moves in and out of the cell by active transport D. Na+ moves into the cell by active transport and out of the cell by facilitated diffusion E. Na+ moves into the cell by facilitated diffusion and can not move out of the cell
The first part of the large intestine is the cup-shaped ________
a. cecum b. appendix c. transverse colon d. ascending colon
Mutations can create new alleles that
A. are beneficial to the organism's fitness. B. have no effect on the fitness of the organism. C. decrease the fitness of the organism. D. All of the choices are correct.
Which of the following is true for testing a hypothesis?
A. Design an observational or experimental study that is capable of testing those hypotheses. B. State the hypothesis as precisely as possible and list the predictions it makes. C. Both of the above D. None of the above