What would cause you to believe that someone has a heart murmur?
A. irregular heart beats
B. irregular heart sounds instead of sharp lub-dub sounds
C. low blood pressure
D. an irregular ECG
Answer: B
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Despite the aggressive defense of the cardiovascular system by the immune system, some microbes can invade and establish an infection in the blood. From the following list of microbes and their virulence factors, identify the mismatch.
A. Borrelia burgdorferi changes its surface antigens to avoid immune recognition. B. Coxiella burnetii produces an endospore-like structure. C. Trypanosoma cruzi cloaks itself in host proteins to avoid immune recognition. D. Bacillus anthracis produces antioxidants to combat lysosomes.
The primary reason for the daylight migration of many pelagic animals to deeper waters is:
a. escape from visual predators. b. escape from the harmful effects of the sun. c. preference for the colder waters of the deep. d. the abundance of food in deeper waters.
The relationship between the light-dependent and light-independent reactions in photosynthesis is that
A. the energy stored in the glucose made during the Calvin cycle is used to drive the light reactions. B. the light-dependent and light-independent reactions both take place within the membranes of bacterial cells or thylakoid membranes of chloroplasts. C. the ATP made during the light-dependent reactions is used for the growth and development of the cell and the ATP from the oxidation of glucose drives the light reactions. D. the light-independent reactions are driven by the ATP and NADPH generated from the light reactions.
Synoxial Joint is filled and lined by what?
What will be an ideal response?