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Proteins are synthesized by ribosomes in the cells by mRNA which codes the message of the amino acid sequence. Proteins found in diet is not going to directly act on our cells as they undergo digestion, only amino acids or other chemicals our cell gain. DNA in the nucleus controls the protein synthesis by gene expression.

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What are the two main components of cell membranes?

The two main components of cell membranes are phospholipids and proteins. Phospholipids form a lipid bilayer that gives the membrane structure and acts as a barrier to the passage of molecules, while proteins function as channels, receptors, and enzymes that help with various cellular processes.


Amino acids is what gives us traits from your parents?

Proteins determine how a gene is expressed. Proteins are composed of amino acids that are synthesized (put together) by RNA, and RNA is made from DNA. DNA is what you inherit from your parents--very basically, your genes are sections of DNA that code for certain proteins (that are composed of amino acids).


What is the name of the protein that gives the nucleus its shape?

The protein that gives the nucleus its shape is called lamin. Lamin proteins form a network underneath the nuclear envelope that provides structural support and maintains the shape of the nucleus.


What role do proteins play?

Proteins have a wide variety of jobs. Some proteins are used in the maintenance of the cells structure. Proteins can be used to move various portions of the cell do different locations within the cell (eg chromosome movement during mitosis). Other proteins, found in cell membranes are used in the active and passive transport of molecules (eg. aquaporins, sodium channels). Many proteins are enzyme which catalyze reactions within the cell (eg. Hexokinase). In short proteins (in general) do not have one specific job but different proteins have different functions.


Why are proteins important for your survival?

Proteins are essential for helping to control and regulating the rate of chemical reactions. They are involved in the immune system and transport materials around the body. They also help to support muscles and bones.