Q. Which of the following is a network of protein fibers that supports and gives shape to a cell?
They have a network of filaments known as the cytoskeleton (literally, “cell skeleton”), which not only supports the plasma membrane and gives the cell an overall shape, but also aids in the correct positioning of organelles, provides tracks for the transport of vesicles, and (in many cell types) allows the cell to …
Q. What is a network of proteins that give the cell structure?
The cytoskeleton is a network of long, thin protein fibers that provide an anchor for organelles inside the cell. The cell’s shape and movement depend on the cytoskeleton. Two types of protein fibers make up the cytoskeleton.
Table of Contents
- Q. Which of the following is a network of protein fibers that supports and gives shape to a cell?
- Q. What is a network of proteins that give the cell structure?
- Q. What provides shape and support for the cell?
- Q. What is the network of protein fibers?
- Q. What are the three types of cytoskeletal fibers?
- Q. What are the thickest protein fibers?
- Q. What organelle holds your DNA?
- Q. Where is the protein made?
- Q. Which of the following is the example of storage proteins?
- Q. What are examples of structural proteins?
- Q. Are channel proteins positive or negative?
- Q. What happens if there are no aquaporins?
Q. What provides shape and support for the cell?
The cytoskeleton of a cell is made up of microtubules, actin filaments, and intermediate filaments. These structures give the cell its shape and help organize the cell’s parts.
Q. What is the network of protein fibers?
This network of protein fibers is known as the cytoskeleton. There are three types of fibers within the cytoskeleton: microfilaments, intermediate filaments, and microtubules.
Q. What are the three types of cytoskeletal fibers?
Three major types of filaments make up the cytoskeleton: actin filaments, microtubules, and intermediate filaments.
Q. What are the thickest protein fibers?
These threadlike proteins continually rebuild to adapt to the cell’s constantly changing needs. Three main kinds of cytoskeleton fibers are microtubules, intermediate filaments, and microfilaments (Table 5.5. 1). Microtubules are the thickest of the cytoskeleton structures.
Q. What organelle holds your DNA?
nucleus
Q. Where is the protein made?
Ribosomes
Q. Which of the following is the example of storage proteins?
Storage proteins serve as biological reserves of metal ions and amino acids, used by organisms. They are found in plant seeds, egg whites, and milk. Ferritin is an example of a storage protein that stores iron. Iron is a component of heme, which is contained in the transport protein, hemoglobin and in cytochromes.
Q. What are examples of structural proteins?
Examples of structural proteins can be keratin, collagen, and elastin. Keratins are found in hair, quills, feathers, horns, and beaks. Collagens and elastin are found in connective tissues such as tendons and ligaments.
Q. Are channel proteins positive or negative?
Some channels use charges to select which molecules go through. Negative charges attract positive molecules and repel negative molecules (A). Positive channels attract negative molecules and repel positive molecules (B).
Q. What happens if there are no aquaporins?
If aquaporins allowed ions through their channels, all ion concentration gradients across the cell membrane would approach zero (i.e., all ions would be in equilibrium) and the cell would not be able to perform many of its critical functions that depend on the concentration gradient of various molecules (e.g., many …
