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irina [24]
3 years ago
12

A recent clinical study demonstrated a possible connection between coffee consumption and heart health. The researchers performe

d
a 6-week trial with 191 individuals, all of whom were heavy coffee drinkers (average of 5 cups/day) prior to the experiment, but none of
whom were smokers. They divided the 191 participants into three groups: no coffee consumption, 1-3 cups/day, and 4 or more
cups/day. They measured blood levels of cholesterol and homocysteine as indicators of heart health Only the no-coffee group showed
a significant drop in both indicators. Previous studies had demonstrated that decreases of the magnitude observed in the no-coffee
group could cut the incidence of heart disease by 10-15%.
a) What is the problem/question being studied?
b) What is the hypothesis?
c) What is the experimental variable?
d) List the controls
e) What is being measured to test the hypothesis?​
Biology
1 answer:
Charra [1.4K]3 years ago
7 0

Answer:

The summary as per the issue is summarized in the following portion of the clarification.

Explanation:

(a)

  • The association regarding coffee intake and insulin sensitivity is being tested and the results. This procedure is intended to examine whether unnecessary coffee intake is positive or negative again for the heart. Or if there are any cardiovascular problems it may induce.

(b)

  • The hypothesis seems to be the consequence of such a hypothesis. This illustrates inside such an outcome the association between the factors and response variable. It is stated to provide an understanding of the experiment's response.

(c)

  • Any conditions that may be adjusted, calculated, or influenced during an analysis constitute variables. Three research variables have become primarily present. Variable autonomous, variable dependent including variable power. They are those variables that can only be modified in an experiment by a researcher. Independent variables are essentially the cause for the effect, as well as a shift of independent variables impacts the variables (dependent) accordingly.
  • The independent variable throughout this analysis is the number of coffees, in which 3 categories are given separate amounts of cups of coffee. The researcher decides the coffee which should be offered to all the participants.

(d)

  • Through an analysis, monitoring variables are those variables most of which are maintained stable. Variables under regulation throughout this experiment include body temperature, ambient moisture.

(e)

  • To verify the theory, the ratio of cholesterol including homocysteine throughout the blood would be calculated. The theory indicates that a rise in cholesterol levels, as well as homocysteine levels, can be caused by increased coffee intake, thus raising their risk of cardiovascular diseases.
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Answer:

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Explanation:

     Part of the definition of gases and liquids is the ability to flow, so this answers your question.

     Why does this not apply to solids? The cells in a solid are closer together with less room for movement, so they do not "flow" like gasses or liquids. You can think of the device you are asking this question on versus the water in the ocean.

<u>Note</u>: Gas can still flow, but it does not flow the same as water. It depends on what you are being taught for if gas flows or not.

-> Liquid flows from high to low only, while gas can flow in all directions

Have a nice day!

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B. They all have the same genes but some have hair and some don't

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Drag and drop the appropriate labels into position to explain how this defect might cause mr. g's other problems.
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How does Mr. G's altered blood flow explain his signs and symptoms? Drag and drop the appropriate labels into position to explain how this defect might cause Mr. G's other problems. Fill the boxes in order, starting with 1, then 2, etc

(Image attached)

Answer:

  1. When left ventricles contracts, some blood goes up through mitral valve into the left atrium, Turbulent flow through the valve causes systolic murmur. the atrium is overfilled and dilated.
  2. Because some blood re-entered the mitral valve, less is pumped out into the aorta. the ejection fraction is only 43%
  3. Less blood enters aorta, so SBP is low. Baroreceptor reflex causes increased heart rate; wall of overworked left ventricles becomes thicker
  4. Because its already partly full of blood from the ventricle, the left atrium accepts less blood from the lungs, the lungs overfilled with fluid; resulting in troubled breathing.

Explanation:

A murmur is a result from a abnormal blood flow to the heart.Its basically an unusual sounds that is heard between heartbeat A systolic murmur occurs when the heart muscles contracts. i.e they begin and end between S1 and S2.

From the above information, it seems like Mr G is experiencing mitral regurgitation. It is a condition where mitral valve doesnt close tightly and as a result the blood flows back from the left ventricle into the left atrium.

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