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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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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.
Embedded in the phospholipid bilayer?
Protein Molecules
How does number of protein channels affect diffusion in a cell.?
The number of protein channels in a cell directly affects the rate of diffusion of molecules across the cell membrane. A higher number of protein channels allow for more molecules to pass through, leading to faster diffusion. Conversely, a lower number of protein channels may result in slower diffusion rates.
How do large polar molecules enter the cell?
Large polar molecules enter the cell through facilitated diffusion or active transport, which require the assistance of specific protein channels or carriers in the cell membrane. These proteins help transport the molecules across the membrane against a concentration gradient or when the molecules are too large to pass through on their own.
What is a carrier protein?
A carrier protein is a type of protein that helps transport specific molecules across cell membranes. These proteins bind to molecules on one side of the membrane and release them on the other side, facilitating their movement into or out of cells. Carrier proteins play a crucial role in maintaining cellular function by regulating the transport of essential molecules.
Which best describes how mrna is used by cell?
it is used to transfer the code for protein synthesis
What statement best describes extracellular digestion?
large insoluble molecules are converted to small soluble molecules outside the cell
Which best describes mRNA is used in a cell?
it is used to transfer the code for protein synthesis APEX
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 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 are the molecules that give the cell membrane a mosaic structure?
protein molecules in the cell membrane gives the mosaic structure .
What describes the movement of water molecules in and out of a cell?
osmosis
What is the cell made of?
The cell membrane is made of carbohydrate, lipid, and protein molecules.
