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lara [203]
3 years ago
5

4 Which muscles are actively involved in normal breathing?

Biology
2 answers:
Pavel [41]3 years ago
6 0
The lungs have no skeletal muscles of their own. The work of breathing is done by the diaphragm, the muscles between the ribs (intercostal muscles), the muscles in the neck, and the abdominal muscles.
SVEN [57.7K]3 years ago
3 0

Answer:

The main muscles are the diaphragm and intercostal muscles, but the muscles in the neck and the abdominal muscles also help.

Explanation:

The diaphragm is the muscle under the lungs that helps move the lungs while the intercostal muscles are the muscles in between the ribs.

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What is the responsibility of the Large Intestines?
Arada [10]

Answer:

Since, we know that the large intestines have so many responsibilities .... The purpose of the intestines is basically to absorb water and including salts from a material, Which means it has not yet been digested as food, and also to get rid of any waste products left over, Also this is very important for the intestines to do this process.

7 0
3 years ago
Which statements describe thigmotropism check all that apply
Finger [1]

Description of  thigmotropism is given below.

Explanation:

1. Thigmotropism is a plant’s response to touch.It is a plant’s response to an external stimulus.It can occur quickly or slowly.Thigmotropism may involve the closing and opening of plant leaves.

2. Thigmonasty or thigmotropism can be define as the response of touch shown by the plants. Here, touch is the external stimulus. It can be define as the movement of the plant parts in response to the external stimulus that is contact or touch. It is also known as Haptotropism. The plant may change it's orientation, shape and size of the plant parts.

3,The thigmotropism can be positive or negative depending upon the visual response shown by the plants. The response shown by the plants is generally fast  but may be slow. This response is shown by the plants in cases of danger of herbivory.Some plants like Mimosa pudica or touch me not plant shows thigmotropism by closing their leaves on touch

8 0
3 years ago
We hear a lot about stem cell research in the news. What are stem cells, and why might a person with damage to the brain or spin
andrezito [222]
<span>Stem cells are found in multicellular organism,they are undifferentiated in nature and can form other special cells or could divide in further stem cells by mitosis.The person with brain or spinal cord injury would be interested cause these cells could be used in future to cure the problem.Human embryonic stem cell (HESC) research is ethically and politically controversial because it involves the destruction of human embryos.The resource used was paper by B Lo named 'Ethical Issues in Stem Cell Research'.And according to me research in this field is important for development of mankind</span>
7 0
3 years ago
Read 2 more answers
You arrive late to a biological seminar. However, just as you enter the room, you hear the speaker referring to the "five-prime
lidiya [134]

Answer:

c. DNA

Explanation:

The DNA is double stranded molecule that twist around each other to form a double helix structure. Each strand consists of nucleotide bases joined together by deoxyribose sugar-phosphate backbone.

<em>The two strands of the DNA lies anti-parallel to each other and each strand has two ends - the 5' end where the phosphate group gets attached to the 5′ carbon of a ribose sugar and the 3' end where there is a free hydroxyl group attached to the 3′ carbon of a ribose sugar.</em>

Hence, the correct option is c.

7 0
3 years ago
What is the ultimate fate of the electrons that are stripped from glucose during cellular respiration? a) They are donated to NA
aev [14]

Answer:

The correct answer is c) They are used to form ATP by chemiosmosis

Explanation:

In cellular respiration, glucose is oxidized into carbon dioxide and water and  converts into NADH a FADH₂ during glycolysis and Kreb cycle. Then these reduced molecules are used to provide the source of electrons during chemiosmosis.

This transfer of electron to electron transport chain brings the conformation change in proteins that helps in transport of H⁺ions across the inner membrane of mitochondria. This transport of ions increase the proton gradient in the membrane.

So to equalize the proton gradient H⁺ moves towards the matrix through ATPase which allows the formation of ATP from ADP. Therefore the right answer is c) They are used to form ATP by chemiosmosis.

7 0
4 years ago
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