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valina [46]
3 years ago
5

Can you help me identify if the rest are from the root or shoot system? pls help

Biology
2 answers:
ddd [48]3 years ago
6 0

Answer:

Cant be identified.

Burka [1]3 years ago
3 0
Points points for you
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In skeletal muscle Catt is essential for the contraction process. For skeletal
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Answer:

The source of Calcium (Ca⁺⁺) for the skeletal muscle cells is the sarcoplasmic reticulum, the main store of intracellular Ca⁺⁺.

Explanation:

Calcium (Ca⁺⁺) is an ion that plays an important role in muscle contraction, a process that requires high cytoplasmic concentrations of this ion to promote myofibrillary activity.

The sarcoplasmic reticulum (SR) -equivalent to the endoplasmic smooth reticulum- is an organelle that regulates the contractile activity of skeletal muscle. The two terminal cisterns of the SR attach to the T-tube, forming a triad, which surrounds the myofibrilla.

Once the muscle cell receives the signal to contract, the Ca⁺⁺ channels are opened and allow Ca⁺⁺ to enter the cell, promoting the exit of this cation from the SR and increased its cytoplasmic levels. This stimulates muscle contraction.

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DDT is a synthetic compound commonly used as an insecticide. It was used to control mosquito species that commonly spread diseas
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I did it

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When you are ill with a cold, you fix a bowl of chicken noodle soup to eat to feel better. what factor drives your food choice i
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8 0
4 years ago
What does the roots and the stem do differently?
goblinko [34]

Stem

1. Grows upward show negative gravitrotropism

2. Stems don't absorb water and nutrients

3.Stems have trichomes

Roots

1 show positive gravitrotropism

2 absorb water and Minerals

3 bears root hairs

3 0
4 years ago
Read 2 more answers
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