Answer:
The most important properties of an ideal drug are: effectiveness, safety, and selectivity. If the drug is not effective, it should not be used. There is no such drug as safe drug: all drugs can cause harm. There is no such thing as selective drug: all drugs can cause side effects.
Answer:
The mitral valve has fewer flaps than the right atrioventricular valve:
<em>a) True </em>
Explanation:
The mitral valve is a bicuspid valve, which means it has two flaps; whereas, the right atrioventricular valve is a tricuspid valve and so has three flaps.
These two heart valves link the atrium with the ventricles. The mitral valve is located on the left side of the heart, while the tricuspid valve is on the right side.
Answer:Chemical testing has high reliability and high validity.
Explanation:
Approximately 74 percent of adults in the United States are overweight. BMI
is known as body mass index and it is calculated by
BMI= weight/height
BMI = kg/m²
Body mass index helps to determine if a person is overweight or
underweight. Being over weight means having a BMI of 25-29.9 while
having below 18.5 means being underweight.
Recent studies have however shown that approximately 74 percent of adults
have a BMI of greater than 25 which means they are overweight.
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Answer: b. DNA
Explanation:
DNA is a genetic material commonly found in all living beings. It is present in a thread like structure that is called as the chromosome. The DNA is double helical structure which exhibits the segments of small units called as the genes. The gene is a hereditary material which encodes for a particular protein. Each gene is responsible for determining a particular trait in living beings.
