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Proteins are macromolecules made up of amino acids, responsible for a variety of functions in a cell such as catalyzing biochemical reactions, providing structural support, and enabling cell signaling. They are diverse in function and structure, with each type of protein having a specific role within the cell.
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What is a membrane protein and how does it function within the cell membrane?
A membrane protein is a type of protein that is embedded within the cell membrane. It functions by helping to transport molecules in and out of the cell, acting as receptors for signaling molecules, and providing structural support to the cell membrane.
Where in the cell are protein molecules formed?
Protein molecules are formed in the ribosomes of a cell, which can be found in both the cytoplasm and on the endoplasmic reticulum (ER). The process of protein synthesis involves translating the genetic information from mRNA into a specific sequence of amino acids to form a protein.
What does a carrier protein do in the process of transporting molecules across a cell membrane?
A carrier protein helps transport molecules across a cell membrane by binding to specific molecules and changing shape to move them across the membrane.
Does facilitated diffusion require a transport protein for the movement of molecules across the cell membrane?
Yes, facilitated diffusion does require a transport protein for the movement of molecules across the cell membrane.
Where in the cell are protein pumps located and what is their function?
Protein pumps are located in the cell membrane and their function is to transport molecules across the cell membrane, regulating the movement of substances in and out of the cell.
Which best describes how mrna is used by cell?
it is used to transfer the code for protein synthesis
Which best describes mRNA is used in a cell?
it is used to transfer the code for protein synthesis APEX
What statement best describes extracellular digestion?
large insoluble molecules are converted to small soluble molecules outside the cell
Where are new protein molecules made?
New protein molecules are made in the cytoplasm of the cell.
What term describes this action does it require energy?
1.Small lipid molecules are in high concentration outside a cell. They slowly cross the membrance into the cell. 2. Ions are in low concentration outside a cell they move rapidly into the cell via protein molecules.
What is a membrane protein and how does it function within the cell membrane?
A membrane protein is a type of protein that is embedded within the cell membrane. It functions by helping to transport molecules in and out of the cell, acting as receptors for signaling molecules, and providing structural support to the cell membrane.
What is the role of protein channelsin the cell membrane?
Protein channels allow the cell membrane to transfer large molecules across it. Remember, diffusion only occurs with small molecules. Protein channels are a necessity to transfer larger molecules.
Where in the cell are protein molecules formed?
Protein molecules are formed in the ribosomes of a cell, which can be found in both the cytoplasm and on the endoplasmic reticulum (ER). The process of protein synthesis involves translating the genetic information from mRNA into a specific sequence of amino acids to form a protein.
Where are proteins molecules made?
New protein molecules are made in the cytoplasm of the cell.
State one function of the protein molecules that are located in cell membranes?
One function of protein molecules in cell membranes is to transport molecules in and out of the cell. These proteins act as channels or carriers that help regulate the movement of substances across the membrane.
What describes the movement of water molecules in and out of a cell?
osmosis
What are the molecules that give the cell membrane a mosaic structure?
protein molecules in the cell membrane gives the mosaic structure .
