According to the body mass index (BMI) chart, a healthy BMI is
A. between 18.5 and 24.9.
B. between 25 and 29.9.
C. 50 or higher.
D. 30 or higher.
E. 40 or higher.
Answer: A
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Based on the graph above, after approximately what period of time could another impulse be propagated?
A) 1 msec
B) 2 msec
C) 3 msec
D) 4 msec
E) immediately following the first stimulation
Identify the point in time during an action potential when a positive feedback process is occurring in a neuron.
A. when the neuron is at rest B. as the neuron is being depolarized and passes the threshold potential C. after the peak depolarization of the action potential when it is rapidly repolarizing D. during the undershoot phase when the neuron is slightly hyperpolarized relative to the resting potential E. A positive feedback process is occurring at all the time points given.
For animals, the final hydrogen acceptor in cellular respiration is ____
a. NADP+ b. sulfur c. oxygen d. magnesium e. phosphorus
Which of the following is correctly described as a primary producer?
A. oomycete B. kinetoplastid C. apicomplexan D. diatom E. radiolarian