2,3-diphosphoglycerate
a. is produced within red blood cells
b. production is inhibited by HbO2
c. concentration gradually increases when Hb in the arterial blood is chronically undersaturated
d. can bind with Hb
e. has all of the above characteristics
E
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Refer to Table 1.3 and the bar graph.
A. Write a hypothesis regarding gender and weight.
B. What is the dependent variable? What is the independent variable?
C. Based on the data in the graph above, what is your conclusion?
D. Why is a bar graph a good choice for presentation of these data? Would another type of chart be as
effective?
Create diagrams (of the cells) and graphs (of the potentials) to illustrate the two different situations described below in a multipolar neuron with a threshold voltage of 15 mV above resting potential. In each, indicate decrement of graded potentials (by drawing the same GP at different points as it spreads along the neuron), as well as summation.
Situation 1: There are three simultaneously active synapses on the multipolar neuron, two producing EPSPs and one an IPSP. At least one of the EPSPs is larger than 15 mV at the synapse. The neuron does NOT generate an action potential. Situation 2: There are two simultaneously active synapses, one producing an EPSP and the other an IPSP. The neuron generates an action potential.
What is the mediastinum?
A. The space between the pleural cavities that contains the heart, esophagus, trachea, thymus, and major vessels B. The wall separating the thoracic cavity from the abdominopelvic cavity C. The three layers of membrane surrounding the brain and spinal cord D. Another name for the anatomical cavity located in the middle of the body
Which of these processes is essential for all of the rest to happen?
A) Glycolysis B) Lactic acid reduction C) Anaerobic fermentation D) Electron transport chain E) Citric acid cycle