Question: One way that researchers study the effects of trans fats on people's health is by setting up controlled experiments. For example, in an experimental feeding trial, participants agree to stick to specific diets that the researchers prescribe. In this case, the researchers might vary the proportions of saturated, unsaturated, and trans fats in the diet of each participant. Throughout the study, the health status of the participants is monitored closely.
Suppose that you are a researcher designing an experimental feeding trial. How would you set up your study and what limitations would you face?
Drag the labels onto the flow chart to identify the elements and limitations of your experimental design.
Explanation:
Hypothesis: Trans fat have found having negative effect on the cardiovascular effect.
Prediction : Eating more trans fats will have more risk of cardiovascular health problems.
Experiment: Feeding some people with a diet of higher trans fat and feeding others with a diet lower in trans fat.
Data collection: Blood samples are taken to measure the fat and cholesterol level in the two groups.
Practical limitations:* Is it possible to completely regulate people's diet?
* Are other life style factors affecting cardiovascular
health?
Ethical Limitation: Are we putting individuals health at risk?
Answer:
Cervix.
Explanation:
The process of the child birth and the delivery of the baby from the mother's womb shows the labor. The labor process is completely divided into the four stages.
The passageway is the first stage of labor. This is further divided into the early labor and active labor. The vagina and cervix are the main component of the first phase and consist of the soft tissue. The birth canal is formed by the together of the vagina and cervix.
Thus, the answer is cervix.
Answer:
Breast cancer is the most common noncutaneous malignancy and the second most lethal form of cancer.
Answer:
The species that will be most similar to humans will be
1. rhesus
2. pigeon
3. fruit fly
Explanation:
Evolution can be described as the process in which different organism evolve from common ancestors over a long period of time. Evolutionary studies show that some organisms have more shared characteristics as compared with other organisms. These organisms with common characteristics are believed to be closer to one another and evolved from the same ancestors.
In the above question, as there is only one difference between the cytochrome c of humans and rhesus, hence rhesus is the closest to humans. Pigeons has lesser number of differences than fruit fly, hence it is second on the list. Fruit fly has the maximum differences hence it is placed last.
