Answer:
the cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
It would take 31 codons to code for a protein that contains 30 AA
Answer:
In humans, blood group is determined by three alleles 
, 
, and 
.
and are co-dominant whereas is recessive to other two.
Thus, if a person with blood group O produces offspring with blood group B then the other parent must contain allele.
The genotype of other person can be 
, 
, or 
.
There is only one condition in which the person can have offspring with blood group O that is, when the other parent is .
In this condition, the probability of an offspring to have blood group O is 50%.
In other conditions, the probability of an offspring to have blood O is 0%.
Question: The stethoscope is a device commonly used by doctors to monitor heart function. When listening to a heart beating using a stethoscope, the doctor hears the characteristic "lub-dub" sounds. The lub sound represents the (1)____ of the atrioventricular valves and the dub sound represents the closure of the valves between (2)____.
1. closing or opening
2. the arteries and atria, the ventricles and arteries, or the atria and ventricles
Doctors can also use stethoscopes to monitor respiratory function. A wheezing or whistling sound most likely indicates (3)____
Answer:
The correct answers are:
1. closing
2. the ventricles and arteries,
3. a constricted trachea
Explanation:
Lub being the first sound can be heard during the closing of the tricuspid and mitral or the bicuspid valves present in between the atria and the ventricles.
The tricupsid is present between the atrium and ventricle of the right hand side and mitral at the middle of the atrium and ventricle of left side. They helps in prevention of the reverse flow of the blood from the ventricles to their respective atria.
Dub is the second sound produced during the closing of the pulmonary and aortic valves that are present in middle of the left artery and aorta.
They prevent reverse blood flow from arteries into the ventricle. Diastole is the time gap of two sounds which is known as ventricular filling
Wheezing is the high pitched sound that is being produces when a person starts breathing, especially during exhale. It happens during constriction of the airways or the inflammation. This is also taken as a symptoms of diseases like asthma, COPD, allergies, bronchitis etc.
I would say tested anything scientific comes w a hypothesis and gets tested.
