Because the sinoatrial node sends out impulses that initiate each heartbeat, it is often referred to as the ________ of the heart
Fill in the blank(s) with correct word
pacemaker
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Which marine zone is one of the most stressful habitats on Earth?
a. the pelagic province b. the continental shelf c. deep sea trenches d. the abyssal zone e. the intertidal zone
Which of the following compounds helps to
maintain our blood pH between 7.35 and 7.45?
a. water b. carbonic acid c. hydrocloric acid d. hydrogen peroxide e. sodium hydroxide
A bacterium's large subunit is 60S and its small subunit is 40S. What is the size of the ribosome containing both subunits?
A) 70S B) 100S C) 20S D) 80S E) 120S
How are type 1 and type 2 diabetes mellitus similar?
A. The body does not produce insulin in both. B. The number of glucose carriers is too low in both. C. The body does not produce glucagon in both. D. The blood glucose levels are very high in both. E. Both are a result of obesity.