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BigorU [14]
3 years ago
11

True or false? leisure-time physical activity(pa) has been noted to provide greater protective benefits against heart disease in

older adults, rather than average age adults
Biology
1 answer:
harina [27]3 years ago
7 0

the answer is true.Hope it helps

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Why were fruit flies a convenient organism for morgan to use for genetic experiments?
nevsk [136]
Fruit flies produce offspring relatively fast and have specific traits, such as eye color and body color/shape. They are easy to observe and their traits are easily traced throughout the next generations.
4 0
3 years ago
20 POINTS
charle [14.2K]
Cell wall - Adds structural support to the cell. Holds the cells together
Cell membrane - Serves as a barrier to the cell and allows more nutrient and molecules to move in and out of the cell without letting things that can harm the cell in. 
Outer membrane - Serves the same basic functions a the cell membrane. (Depending on how complicated the class your in is, I would visit this website for more information... https://en.wikipedia.org/wiki/Bacterial_outer_membrane )
Pili - Help the cell move and attach the bacteria to surfaces are other cells. 
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8 0
3 years ago
A pod of dolphins hunting and feeding on a school of fish is an example of
natita [175]
A community interaction would be correct!
A community is when multiple populations interact with each other, in this case the dolphins and fish.
4 0
3 years ago
Read 2 more answers
What is the name for the lowest point of a mechanical wave?
slava [35]

Answer:

D. Trough

Explanation:

8 0
3 years ago
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Which of the following statements about positive feedback mechanisms is not true?
Hunter-Best [27]

Answer:

The correct answer is d  the positive feed back reduces change in the the system

Explanation:

In an  biochemical reaction when the released product stimulate the release and activation of the same product and act together to exibit their biological function, then this type of regulation is called positive feedback.

     The positive feed back mechanism leads to increased change in the system that"s why it is named so.

    For example during blood clotting platelets molecules are released to form clots to stop bleeding. one activated platelet can stimulates the activity of other platelets which then join together to form a group for generating further blood clots.

5 0
3 years ago
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