PLEASE ANSWER THESE QUESTIONS FOR ALL OF THEM 1)Many cells move through their en
ID: 218948 • Letter: P
Question
PLEASE ANSWER THESE QUESTIONS FOR ALL OF THEM
1)Many cells move through their environment by crawling across a substrate or by squeezing between other cells and burrowing through connective tissue. This type of movement relies on [BLANK].
2) Cells are attached to one another and to the extracellular matrix by cell-surface proteins called [BLANK].
3) Microtubules are hollow tubes formed from BLANK dimers, microfilament are a double helix of BLANK monomers, and intermediate filaments are strong fibers composed of BLANK proteins, of which there are over 100 kinds.
4) Match the following types of cytoskeletal elements with their definitions.
Microtubules
Microfilaments
Intermediate filaments
Has a short, branched arrangement just beneath the plasma membrane, reinforces the plasma membrane, helps maintain the cell shape, aids in transporting materials, are are responsible for changes in the shape of many types cells, and aids in cell division
Has a spokelike arrangement throughout the cell, withstands compression and maintains the cell shape, provides tracks for the transport of material, and aids in cell movement and cell division
Has a cablelike structure found throughout the cell that become attached to the cytoplasmic side of desmosomes, provides the cell mechanical strengt
5) A [BLANK] is a collection of cells that work together to perform a specific function.
6) The [BLANK] is a specialized form of extracellular matrix that underlies and supports all epithelial tissue.
- A. B. C.Microtubules
- A. B. C.Microfilaments
- A. B. C.Intermediate filaments
A.Has a short, branched arrangement just beneath the plasma membrane, reinforces the plasma membrane, helps maintain the cell shape, aids in transporting materials, are are responsible for changes in the shape of many types cells, and aids in cell division
B.Has a spokelike arrangement throughout the cell, withstands compression and maintains the cell shape, provides tracks for the transport of material, and aids in cell movement and cell division
C.Has a cablelike structure found throughout the cell that become attached to the cytoplasmic side of desmosomes, provides the cell mechanical strengt
Explanation / Answer
1. Microfilaments: Crawling and burrowing type of cellular movements occur through microfilaments not by cilia or flagella.
2. Integrins: Integrins are accessories proteins attached with cell surface which attaches cell surface of one to cell to the surface of another cell or to the extracellular matrix.
3. tubulin, F-actin, fibrous
4. Microtubules: B, Microfilaments: A, Intermediate filaments: C
5. Tissue
6. Basal lamina
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