What role do the proteins profilin and cofilin play in the cytoskeleton? O Accelerate actin fibre bundling O Cap actin fibres Accelerate actin fibre treadmilling Switch the polarity of the actin fibres Cleave actin protein to active monomers In vertebrates, which cell-cell junction allows for direct chemical communication between adjacent cell cytoplasms, without contact with the extracellular fluid, and is composed of the transmembrane protein connexin? O Desmosome O Gap junctions O Adherens junctions O Tight junctions O Focal adhesions

Q: Which of the following families of actin-binding proteins promote actin filament polymerization?…

A: Actin filaments are made up of a long spiral chain of similar actin proteins. Actin filaments, like…

Q: A vesicle containing proteins modified with M6P has just pinched off the trans Golgi network. Name a…

A: Introduction Amino acids are chemical 'building blocks' that make up proteins.

Q: hat happens in the Golgi? Scramblase flips phospholipids from one leaflet to the other o Addition of…

A: The Golgi apparatus is a membrane-bound organelle found in most cells. It prepares proteins and…

Q: Motor proteins require energy in the form of ATP. ATP hydrolysis results in a conformational change…

A: Introduction :- Kinesin and dynein motors move a variety of organelles and vesicles down the long…

Q: bindng site dain ding, site ATP What type of transport is shown in the figure above? O Active…

A: During active transport substances move against the concentration gradient from an area of low to an…

Q: Given the diagram, what motor protein transports vesicles that are about to utilize cis-Golgi…

A: Golgi apparatus is present near the centrosome-based microtubule organizing center. Secretory…

Q: O Lysosome O Rough ER Golgi Body Smooth ER

A: Eukaryotic cell contains many membrane bound organelles which have different structure and…

Q: An individual transport vesicle will fuse with only one type of membrane is enclosed by a membrane…

A: The ER, Golgi apparatus, and lysosomes all are part of a transmembrane system, but they're not…

Q: What happens to the membrane of a vesicle after exocytosis? it fuses with and becomes a part of the…

A: Ans: 1

Q: In nonmuscle cell locomotion, which protein is activated to nucleate a filament? Arp2/3…

A: Nonmuscle cell locomotion refers to the movement of cells in the absence of muscle contraction. It…

Q: Many less dynamic, more permanent cellular structures such as the nuclear lamina have (????) as the…

A: The nuclear lamina is a dense, fibrous network present inside the nucleus. The nucleus also contains…

Q: Anterograde transport is O Transportation of secretory vesicle backwards O Transportation of…

A: Axonal transport is the axoplasmic flow or axoplasmic transport. It is a cellular process and is…

Q: Which cell structures cause the outer surface of endoplasmic reticulum to appear rough? O Proteins O…

A: Endoplasmic reticulum is an intracellular compartment which is bounded by single membrane. ER is a…

Q: monens ONOP MELSUSANE 1 Sassy [References] ISTRSK Indicate which of the proteins shown in the figure…

A: Biological membranes such as the plasma membrane of a cell or the membranes of organelles like the…

Q: Smooth ER Microvilli Golgi apparatus Rough ER Mitochondrion Centrosome Ribosomes Peroxisome Nucleus…

A: The given picture shows the diagram of a cell structure.The cell is the basic structural and…

Q: A couple is told by their doctor that they cannot have children because the sperm of the male lack…

A: Sperm is the male gamete help in sexual reproduction. Sperm has three part head, mid piece and tail.…

Q: capable of converting peroxisome hydrogen peroxide to water and oxygen destroys engulfed bacteria…

A: Answer :- * capable of converting hydrogen peroxide to water and oxygen :- peroxisome.   * Destroys…

Q: Endocytosis relies on which two organelles to move molecules in and out of the cell?

A: Endocytosis is a process by which cells can take in molecules that are unable to pass through…

Q: 1 Signalling and induction 2 Nucleation .E Isolation membrane 'D 3 Elongation Lysosome F Docking and…

A: This question involves identifying and explaining the roles of membrane-associated structures in an…

Q: Cell crawling depends on O actin polymerization. hydrolysis of ATP by motor proteins. O intermediate…

A: Cell crawling means cell movement.Cell crawls for forming new tissue during embryonic development,to…

Q: Describe the 3 major components of the cytoskeletal system including the proteins that comprise the…

A: 3 major components of cytoskeletal system are:- Actin Filaments Microtubules Intermediate Filaments…

Q: Which protein or organelle assists in re-folding denatured proteins? O heat shock protein O…

A: Answer : the protein or organelle assist in refolding denatured protein is :  Heat shock protein.

Q: How many of the following are present in a long and growing microtubule (with no motor proteins)? I.…

A: GTP is defined as an energy-rich kind of nucleotide that is analogous to a molecule of ATP that is…

Q: Describe what property of desmosomes makes them important in cells undergoing mechanical stress like…

A: Desmosome is a type of modification of plasma membrane in which membrane gets modified to perform…

Q: macrocytosis, but smaller, staning them with eresyl blue they gave a eticulate patter, what is the…

A: Osmosis is the movement of water from the high concentration towards the low concentration of water…

Q: TIM/TOM complexes are involved in transport of proteins ac O mitochondria O nucleus Endoplasmic…

A: Ans- Mitochondria

Q: Which molecule is an important component of the extracellular matrix of animal cells? O flagellin O…

A: Cells are attached to each other to form a tissue. There are many proteins involved in this…

Q: Research the disease Emery-Dreifuss Muscular Dystrophy 2.   What are the significant symptoms of…

A: Emery-Dreifuss Muscular Dystrophy(EDMD) 2- It is a rare disease and progressive in nature. There are…

Q: Which stimulus provides the energy to gate a leakage channel? (Read carefully!) O Ligand binding O…

A: The stimuli that provides the energy to gate a leakage  channel is Ligand binding Answer is : Option…

Q: Actin filaments at the leading edge of a crawling cell are believed to undergo treadmilling. What is…

A: The actin filament is the key component of muscle fiber along with myosin protein filament that is…

Q: Describe the mechanism by which a motor protein moves along microtubules using ONE  example. In your…

A: Motors proteins consists of two protein Kinesin and Dynein. Most important role is to transport of…

Q: Transmembrane proteins DO NOT transport oxygen or carbon dioxide across the membrane provide…

A: A transmembrane protein is an integral membrane protein is distributed throughout the entire region…

Q: Microfilaments and intermediate filaments are different in that only

A: Microfilaments ,intermediate filaments,microtubules form cytoskeleton of a cell. Microfilaments,…

Q: Free ribosomes in cytosol synthesize proteins for_ O None O mitochondria O lysosomes O plasma…

A: Ribosomes in the cell are responsible for the development of all proteins. Some ribosomes are free…

Q: SCIENTIFIC INQUIRY Although both ends of a microtubulecan gain or lose subunits, one end (called the…

A: Microtubules are the major constituents of cytoskeleton that are found in all the eukaryotic cells.…

Q: Describe the role of motor proteins inside the eukaryotic cell andin whole-cell movement.

A: Cytoskeleton is a network of microfilaments and tubules in the cell cytoplasm. There are three types…

Q: You add ATP, microtubules, and vesicles to a slide. You don't observe any movement of the vesicles…

A: Microtubules are a type of cytoskeleton element which help in the movement of chromosomes during…

Q: What process best characterizes Ca2+ movement from the cytosol (low Ca2+ concentration) into the…

A: The plasma membrane or cell membrane acts as a barrier that separates the internal and external…

Q: Please match the junction type with the cytoskeletal component it is associated with Desmosome Tight…

A: Different cells' plasma membranes contain structures called cell junctions. Animal cells include…

Q: Gap 1. Actin Intermediate Filaments 2. Keratin Desmosome 3. Tubulin Microtubules 4. Proteoglycans 5.…

A: Introduction:- The extracellular matrix (ECM) is a three-dimensional network of extracellular…

Q: The subunits of which filament bind to GTP, a condition that favors the polymerization of the…

A: Intermediate filaments: They are small and rod-shaped structures in the cell that aid in structural…

Q: Which of the followings is filament-bundling proteins? O Capz O alpha-actinin and fimbrin O thymosin…

A: Proteins are the building blocks of life. Proteins are made up of amino acids. Amino acids when they…

Q: The subunits of which polymer(s) bind to GTP, a condition which favors polymerization? Intermediate…

A: