List the strengths and weaknesses of epidemiological studies and experimental studies
Epidemiological studies research the incidence, distribution, and control of disease within a population. Epidemiological studies include cross-sectional, case-control, and cohort studies. They are beneficial in that they help researchers to narrow down possible causes of disease and they can raise other, relevant questions about the disease through the research process. Alternatively, epidemiological studies cannot control the variables that may influence the development or prevention of a disease, and they cannot prove cause and effect. Experimental studies test cause-and-effect relationships between variables. Experimental studies include laboratory-based studies-on animals or in test tubes (in vitro)-and human intervention (or clinical) trials. They are beneficial because they can control conditions of the study, they can determine the effects of a variable, and they can apply some of their effects to humans. However, experimental studies cannot generalize their findings to humans and they often must refrain from certain treatments due to ethical reasons.
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A. Eat smaller meals that are lower in fat. B. Eat meals low in carbohydrate. C. Avoid fluids. D. Consume milk or cream with meals.
?What is the composition of a tripeptide?
A) ?one amino acid with three carbons
B) ?three amino acids bonded together
C) ?one amino acid with three acid groups
D) ?three small protein chains bonded together
The MOST common micronutrient deficiency in the world is
A) calcium. B) iron. C) selenium. D) sodium.
_______________________ is the measurement of heat generated as a result of metabolism and is the most accurate technique for measuring resting energy expenditure
a. Direct calorimetry b. Indirect calorimetry c. Kilocalorie d. All of the above