Heart sounds can be detected by a trained physician or nurse to diagnose conditions associated with the heart and blood flow. The chart here shows the typical heart sounds (A) compared to atypical sounds that can be detected. A patient has been monitored and
detected to have a backward leakage of blood after the ventricle contracts. The sounds during the second half of the heartbeat are
normaL Evaluate which heart sound pattern and diagnosis matches with the description of the the irregular heart sounds detected
by the professional
This patient likely has mitral stenosis with subtle sounds being detected at
A)
the end of the heartbeat.
This patient likely has patent ductus arteriosus with irregular sounds
throughout the whole heartbeat
This patient likely has mitral regurgitation causing irregular sounds during
the systolic portion of the heartbeat.
This patient likely has aortic regurgitation causing irregular sounds during
the diastolic portion of the heartbeat.
B)
D)

How did the research presented in the article affect scientists' understanding of the evolution of eukaryotes

Ascientist wants to determine the effect of a new type of gasoline. he fillsone car with normal gasoline and another identical car with the new gasoline.which is the control group? a. the new type of gasolineb. the car with the normal gasolinec. the car with the new gasolinethe amount of gasoline usedd. the amount of gasoline used

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.