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MissTica
2 years ago
13

How do temperature, sunlight, and salinity (all abiotic factors) influence life in aquatic ecosystems?

Biology
1 answer:
Masteriza [31]2 years ago
7 0

how warm the water is changed what bacteria can grow,

sunlight changes how fast things can grow,

salinity changes what bacteria can grow.


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During inhalation, air moves from the larynx directly to the _____.
Veronika [31]

Answer: trachea

Explanation:

During inhalation, air moves from the larynx into the trachea. Air enters the oral cavity, and then it moves into the pharynx.

6 0
3 years ago
Please also describe how actin-binding sites are made available for cross-bridging with myosin heads during contraction.
yaroslaw [1]

Answer: The calcium ion binds to troponin, and this slides the tropomyosin rods away from the binding sites.

Explanation:

Contraction and relaxation of muscle cells brings about movements of the body. The contractile myofilament called sarcomeres are bounded at each end by a dense stripe called the Z - line, to which the myosin fibres are attached, and lying in the middle of the sarcomere are the actin filaments, overlapping with the myosin.

When action potential spreads from the nerve along the sarcolemma (muscle cell membrane), it penetrates deep into the muscle cell through the sarcoplasm (cytoplasm of muscle cell), and releases CALCIUM from the intracellular stores.CALCIUM triggers the binding of myosin to the actin filament next to it forming CROSS BRIDGES.

For this to occur, ACTIN BINDING SITE has to be made available. TROPOMYOSIN is a protein that winds around the chains of the actin filament and covers the myosin-binding sites to prevent actin from binding to myosin. The first step in the process of contraction is for calcium ions to bind to troponin so that tropomyosin can slide away from the binding sites on the actin strands.

3 0
2 years ago
What is a major difference between the structure of a cell wall and a cell membrane
poizon [28]

Answer:

The cell wall is the outside layer and the cell membrane is the inner layer. Cell walls are made  of cellulose and lignin, while cell membranes contain phospholipids. Cell walls are made of cellulose and cell membranes are made of proteins. The cell wall is the rigid structure the surrounds the cell and the cell membrane is flexible and skin like and surrounds the cytoplasm.

Explanation:

Hope this helps! pls give brainliest:)

8 0
2 years ago
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Photosynthesis removes CO2 from the atmosphere and replaces it with oxygen.

Explanation:

Photosynthesis removes CO2 from the atmosphere and replaces it with oxygen. By respiration, O2 is removed from the atmosphere and replaced with CO2. However, these processes are not balanced. Some organic matter is not oxidized. (I'm very sorry if I'm wrong but I believe it's that)

6 0
2 years ago
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Amino acid is to protein as
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Explanation:

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3 years ago
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