Answer:
The correct answer is option - B. proteins.
Explanation:
The muscle contraction needs two protein that is essential in contraction. The muscle has motor protein myosin and spherical protein actin that are slide on one other in contraction that helps in muscle to contraction.
In the contraction, these protein filaments help to change in length and shape of the muscles. Thin filaments involve actin and thick filament in is myosin filaments.
Thus, the correct answer is option - b. proteins.
Answer:
1) Stem cells can renew themselves by dividing into more stem cells more than once.
2) There are two types of stem cells: adult and embryonic stem cells.
3) Stem cells are not specific to one area in the body and can turn into skin, bone, blood or brain cells.
Answer:
Homeostasis
Explanation:
"ability to maintain a relatively stable internal state that persists despite changes in the world outside."
Hope this Helps
Hey there,
Q1 & Q2)
1) Heredity- Genes carry genetic information for cholesterol. So, it can be passed down from your parents.
2) Diet- Cholesterol depends on the food you eat. If you eat food with too much saturated fat, you get a high level of cholesterol.
3) Weight- If you are obese, you are more prone to get cholesterol. Thus, you need to lose weight
4) Exercise- Exercise regularly to maintain a perfect cholesterol level
5) Stress- If you are a student, take breaks in between study timings to keep you less stress or if you are an adult, go for walks and do something that you like the most to calm your brain down.
Q3) Cholesterol causes plague to grow in your hearts. This thick, hard plague will block the arteries and will cause heart attacks and strokes.
Q4) Pros- <span>Helps maintain healthy cholesterol levels, lowers risks of heart attacks and strokes
Cons- C</span><span>ould create too many HDL leaving not enough cholesterol for the body to be healthy.
Hope this helps :))
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