Seawater, water that makes up the oceans and seas, covering more than 70 percent of Earth's surface. Seawater is a complex mixture of 96.5 percent water, 2.5 percent salts, and smaller amounts of other substances, including dissolved inorganic and organic materials, particulates, and a few atmospheric gases.
The most abundant dissolved ions in seawater are sodium, chloride, magnesium, sulfate and calcium. Its osmolarity is about 1000 mOsm/l.
Hopefully this helped hun!Have a good day!
Answer:
nucleus, chloroplasts, cell wall, cell membrane, mitochondria, cytoplasm and vacuole
Explanation:
I think this is right.
I hope this helps! :)
Answer;
-Channel, Recognition, reception, transport
Explanation;
Membrane proteins serve a number of functions:
• Channel proteins: allow dissolved molecules to diffuse through the membrane. Some of these proteins are structured in a way that allows only certain small molecules or ions through.
• Carrier proteins: These have binding sites that allows them to bind to certain substances and physically move the substance from one side of the membrane to the other.
• Receptor proteins: These proteins have active sites shaped to fit specific signal molecules, such as hormones. Once the protein is activated by the substance, it sets off a series of changes in the cell,such as increased metabolic rate or cell division.
• Recognition proteins: These proteins, called glycoproteins (glyco = sugar) have complex carbohydrates attached to them. These form the identification system that allows your body cells to recognize each other as self instead of foreign.
• Protein filaments: Long strands of protein on the inside surface of the membrane help support and strengthen the cell membrane, forming the cytoskeleton.
