Describe how a neuron passes its message on to another neuron and how this model ensures specificity.
What will be an ideal response?
A neuron passes its message on to another neuron by releasing chemical neurotransmitters into the space between the two neurons, called the synapse. A presynaptic neuron sends the specific information, or impulse, and a postsynaptic neuron receives it. A neurotransmitter can stimulate a postsynaptic neuron only at specific receptor sites on its dendrites and soma. Receptor sites respond to only one type of neurotransmitter. This lock and key model ensures that specific neurotransmitters work only at specific kinds of synapses.
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What is the composition of maltose?
a. two glucose units b. one glucose and one fructose unit c. one glucose and one galactose unit d. one galactose and one fructose unit e. two galactose units
The process of pasteurizing juice
A. inactivates enzymes and destroys microorganisms that can cause foodborne illness. B. allows the particles of fruit to stay suspended in the juice without settling to the bottom. C. increases the fresh-squeezed flavor. D. helps ensure a uniform thickness throughout the juice.
Normal blood glucose levels range between ________.
A. 70 and 100 mg/dL B. 125 and 140 mg per 100 ml C. 40 and 70 mg/dL D. 200 and 300 mg/dL
Portion sizes or "servings" of food today tend to exceed standard serving sizes developed by the USDA for use in planning healthful diets
a. True b. False Indicate whether the statement is true or false