How do sensory cells communicate different types of information to the brain-touch versus light for example?
A. by firing action potentials of varying amplitudes in the same neuron
B. by using different kinds of receptor potentials in the same neuron
C. by using different kinds of electrical signals in the same neuron as the information is conveyed to the brain
D. by using different neurons for different stimuli (e.g., light and touch)
E. by firing action potentials at different frequencies in the same neuron
Answer: D
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their diet than they need, the excess
a. is flushed from the system as waste. b. is stored as glycogen in the muscle and liver cells. c. is stored as fat in the adipose cells. d. is stored as ATP in the muscle cells. e. is stored as glycogen in the muscle and liver cells, and stored as fat in the adipose cells.
Resource consumption tends to ____ with economic and industrial development
a. remain balanced b. decrease c. remain stable d. rise e. keep pace
How do translation and transcription differ?
1.Translation occurs in the nucleus, while transcription takes place in the cytoplasm. 2.Translation involves mRNA, but transcription does not. 3.Transcription involves a promoter, while translation begins with a start codon. 4.mRNA is produced by transcription, but tRNA is not.
Which of the following statements about bright field microscopy are true?
A) Bright field microscopy is great for seeing living samples. B) Dark field, phase contract, and differential interference contract microscopy are better for observing dead samples. C) Bright field microscopy is able to see specimens without natural coloration. D) Bright field microscopy is the simplest and most common form of microscopy. E) Bright field microscopy has the sample appear as a brighter contrasting image on a dark background.