Three-quarters of the substantial amount of energy consumed by the brain is used to run a single molecular machine that maintains the resting potential of neurons. What is this machine called?
A. K+ leak channel
B. sodium-potassium pump
C. acetylcholine receptor
D. voltage-gated sodium channel
E. voltage-gated calcium channel
B. sodium-potassium pump
You might also like to view...
Which of the following statements is (are) true?
a. The systolic pressure is determined when the first sound is heard after pumping up the pressure cuff. b. The diastolic pressure is the smaller of the two pressure values. c. The diastolic pressure is determined when the sounds stop as air is released from the cuff. d. Diastole is at the end of the cardiac cycle. e. All of these are true.
Which one of the following types of junctions in an epithelium allows the tissue to stretch and bend, as in the epithelium of the skin?
A) tight junction B) adhesion junction C) glandular junction D) stratified junction E) gap junction
Facilitated diffusion and active transport require a carrier protein to mediate the movement across the plasma membrane.
Answer the following statement true (T) or false (F)
The stain shown in Image A is dependent on the organism's:
a) Waxy capsule b) Carbohydrate component c) Argyrophilic character d) Internal structure