17. Resting membrane potential -T a) must be reversed in order for nerve and muscle to function T b) is established by differences in ion permeability leading to slight excess of positive charges on the- outside of the membrane compared to the inner membrane T c) is a characteristic of all living cells T d) All the above (a, b and c) are correct. T 18. The cell organelle that fuses with a phagocytic vesicle in macrophages and which is responsible for killing of foreign organisms is the T a) Golgi apparatus T b) lysosome c. peroxisome d. mitochondrion T 19. The cell organelle that packages material for secretion to the outside of the cell is the a) Golgi apparatus T b) lysosome c. peroxisomeT d. mitochondrion T
Q: 9)Two solutions are separated by a selectively permeable membrane that is not permeable to glucose.…
A: Answer - options (c) is correct answer. Explanation - we know that in given problem our semi…
Q: One is true about smooth endoplasmic reticulum A. It lacks ribosomes B. It is site of Ca2+…
A: All eukaryotic cells have abundant endoplasmic reticulum (ER) cell organelle. ER is a membranous…
Q: Which component of the plasma membrane allows the immune system to differentiate between body cells…
A: According to bartleby guidelines ; if more than one questions are asked in single pic; we have to…
Q: Direct communication between animal cells that a virus infection like Covid 19 has taken place can…
A: Tight junctions, desmosomes, and gap junctions bind animal cells and allow them to communicate…
Q: Explain different types of membrane transports and give examples of these transports in our body.
A: Plasma membrane Function Separate cell from Environment. Transport substances in and out of cell.…
Q: Proteins of the plasma membrane carry out all of the following functions except Select one: a.…
A: The membrane protein do all of the following functions above except
Q: The protein integrin binds to actin filaments and, by binding to proteins like fibronectins,…
A: Integrin is a transmembrane protein that facilitates cell-cell and cell-extra cellular matrix…
Q: Which of the following is not true about phagocytosis?(a) It is a form of exocytosis.(b) It is…
A: The process by which eukaryotes take up/internalize substances from the environment is known as…
Q: A change in ion (salt) concentrations in an animal’s body may result ina. altered membrane…
A: The correct answer is option (e).
Q: 3. What is the difference between osmosis and diffusion? Checkpoint Tonicity For each of the…
A: Passive diffusion: This type of diffusion occurs down a concentration gradient, where the solute…
Q: Which of the following BEST describes the composition of the plasma membrane? a.Double layer of…
A: According to Bartleby guidelines , we are required to attempt first question in case of multiple…
Q: The major function of the sodium-potassium pump is toa. pump Na+ into and K+ out of the cell.b.…
A: Potassium and sodium both are one of the essential electrolytes that are needed for the body to…
Q: Explain why the graph obtained for facilitated diffusion when velocity of transport of a given…
A: Here in the image the the first portion of the question has been described.
Q: 10. The protein integrin binds to actin filaments and, by binding to proteins like fibronectins,…
A: Answer. Cell adhere to each other and to the extracellular matrix through cell surface proteins…
Q: c) Figure 3 shows how materials are actively transported across plasma membrane. Extracellular…
A: Process X is- ENDOCYTOSIS Process Y is-EXOCYTOSIS
Q: . During a wound infection, the bacteria Clostridium perfringens produces collagenase, an enzyme…
A: As per our guidelines, we are supposed to answer only one question. Kindly repost other questions as…
Q: Match each example of a cell transport process to the correct term. CO2 (a small uncharged gas…
A: Match each example of a cell transport process to the correct term.
Q: Secretory vesicles fuse with the cell membrane to release their contents to the outside of the cell.…
A: The plasma membrane can be defined as a cellular membrane that covers the cellular components and…
Q: 1. requires ATP A. diffusion 2. random movement of molecules from high to low B. facilitated…
A: Diffusion is the movement of molecules from a high region to a low-concentration area via random…
Q: 4. The cell membrane below is divided into three sections to show three different types of transport…
A: The plasma membrane is also referred to as a cell membrane. It is a thin membrane that surrounds…
Q: 6. Study the following figure that explain a number of molecules of specific element inside and…
A: There are two basic methods for moving molecules over a membrane, and the difference is whether or…
Q: 8) Indicate which of the five major types of membrane protein (adhesion, enzymatic, recognition,…
A: 1st Ans: Transmembrane protein
Q: Summarize the process in which the sodium-potassium pump transports solutes across the plasma…
A: Active transport is the process that requires energy for pumping of molecules and ions across…
Q: 1. When all the protein carriers are used up, the carriers are said to be A. Adapted B. Unsaturated…
A: Hi! As you have posted multiple questions and have not mentioned which one is to be answered, we are…
Q: 4. The graph below represents two different modes of transport across a biological membrane. One…
A: Biological membrane is a selectively permeable structure. Biological membrane acts as a barrier…
Q: 1. Which properties are characteristic of ion channels? a. They are usually lipids. b. They exist on…
A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…
Q: How do small fat-soluble molecules normally get into a cell? a. they never get in b. the…
A: cell are the basic membrane bound unit which is the fundamental unit of life. cell is composed of…
Q: Both active and passive transports can be subdivided further. Distinguish between the different…
A: According to our guideline we can answer maximum three subparts of a question. So upload the last…
Q: If a membrane protein is described as "integral" what does that word refer to? A) super important;…
A: Integral membrane proteins are for all time inserted or embedded inside the plasma membrane. They…
Q: Match the cellular junction with its characteristic (side of cell, cellular role, intracellular…
A: Cell is basic structural and functional unit of life which controls all the activities of the body…
Q: 4. A researcher is interested in the mode of transport of three different substances (A, B, & C)…
A: The plasma membrane is a protein-lipid bilayer that is hydrophobic at the core and both sides are…
Q: If a cell could not properly incorporate proteins into its membrane , which of the following…
A: In simple diffusion is a type of passive transport in the cell membrane, atoms that are little and…
Q: Of the following functions the peripheral glycoproteins and glycolipids (surface markers) of animal…
A: Plasma membrane is primarily made of a bilayer of phospholipids but it also contains various…
Q: Which of the following is not a function of the integral membrane proteins? O a. Acting as receptors…
A: Integral membrane protein that functions as receptors includes insulin receptor. They are actively…
Q: Which of the following statements about actin is FALSE? a) Actin is involved in cytokinesis. b)…
A: Actin Actin is the globular multifunctional protein help in the muscles contraction.
Q: Explain the steps involved in phagocytosis. Why endocytosis found only in an animal cell? What is…
A: Steps involved in Phagocytosis Target cell is attached to with the phagocyte using pseudopods.…
Q: Peripheral proteins are membrane proteins that... a. attach to integral proteins b. insert into the…
A: The plasma membrane is considered as the barrier for the cell, which helps to permit only the…
Q: What sort of cellular changes would you expect a sailor sick with scurvy to experience? O Their…
A: Introduction: Vitamin C insufficiency is known as scurvy. Anemia, debility, tiredness,…
Q: 1. Which properties are characteristic of ion channels? a. They are usually lipids. b. They exist on…
A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…
Q: 2. The capacitive properties of biological tissues are connected: a - with the active resistance; b…
A: Capacitance is the ratio of the amount of electric charge stored on a conductor that has a charge to…
Q: 1. An animal cell is missing an enzyme that attaches sugar molecules to membrane proteins. Which of…
A: The cell is life's basic unit and is involved in carryout out different activities, including…
Q: 1. Tonicity is the; A) Cell's response as exposed to fluids B) Fluid hypotonic to blood C) Fluid D)…
A: Since you have asked multiple questions, we will solve the first three questions (1, 2, 3) for you.…
Q: Concerning the plasma membrane: A Approximately 80% of the plasma mem- brane mass is composed of…
A: The plasma membrane is the enclosed membrane, which separates the cytoplasm from the outer cellular…
Q: You have discovered a disorder in which individuals have very delicate skin. With friction on the…
A: There are many cell multimeric proteins that help in contacting the neighboring cells together by…
Q: 8. The cartoon at the right depicts a hypothetical cell that has a Lit-K+ ATPase (shown as the…
A: The movement of ions across the membranes of cells create a potential difference across the…
please answer all 3 questions
Step by step
Solved in 3 steps
- Cells transporting substances across their membranes is essential. Choose TWO of the following types of cellular transport. ๏osmosis ๏active transport (b)Using the same transport types, identify a specific cell that utilizes that type of transit (i.e. one cell for each transport type, or two different cell examples), and detail a substance that is transferred. (c)A typical human lymphocyte has a radius of about 10 μm, while a typical bacterium (e.g., S. pneumoniae) has a radius of about 1 μm. Assuming that both cell types are perfectly spherical, compare and contrastthe transport mechanisms for each of these cells.Dr Renko studied diffusion of tracer molecules to study paracellular diffusion across an epithelial monolayer of Caco-2 cells. The tracers were fluorescently labelled dextran molecules of different molecular weight. She is screening various drugs to determine whether they affect the cells in any way. Which drugs are most likely to change paracellular diffusion? a.) Drugs that modify microvilli are the most likely to change paracellular diffusion b.) Drugs that modify gap junctions are the most likely to change paracellular diffusion c.) Drugs that modify with aquaporins are the most likely to change paracellular diffusion d.) Drugs that modify tight junctions are the most likely to change paracellular diffusionActive transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other direction
- Focal adhesion complex attachment to extracellular matrix molecules is mediated by: heterodimers of alpha-integrin and beta integrin homodimers of classical cafherins The force of gravity actin filamentsIntercalated discs, oblique complexes, opposite orientation , staggered 60- cell from one side. They are also connected to extracellalise mani proteins. They constitute a connection between are transmembrane proteins connected to actin fluments and cytoskeleton in the interior of the the cell interior and exterior. A. Integrins B. Intermediate filaments C. Gap junctions D. Cadherin junction Part II: Fill in the blank: IL-04,5,6 1- The addition of more subunits at either end of MTs is called......... 2- function as antennae for cells to probe their environment...... 3- It is from the kinesin family of proteins, binds the growing ends and induce catastrophe.... 4- An intracellular non-protein molecule that participates in cell signaling...... 5- Each tubulin heterodimer binds ------- GTP molecules br 6-responsible for the formation of stress fibers.....dougo 7- an important component of structures that grow from skin in animals...... Xom alex 8- proteins are fibrous rather than…The following figure shows the process of: High glucose concentration (Glucose)ut = (Glucose], O Active transport Phagocytosis O Simple diffusion None of these is correct Facilitated diffusion
- Match the cellular junction with its characteristic (side of cell, cellular role, intracellular connection or transmembrane protein) tight junctions focal adhesions desomsomes gap junctions A. link the intermediate filaments of neighboring cells using homophilic cadherin-cadherin binding B. integrins link the actin-myosin stress fibers to the extracellular matrix C. occludins bind to occludins and prohibit the diffusion of membrane proteins from the baso-lateral surface to the apical surface of epithelial cells D. connexons form pores between cells in an epithelial sheet or tube5. Which of the following is NOT true about channel and carrier proteins? a) Carriers never form a direct opening between inside and outside the cell. b) Channels generally transport material faster than carriers. c) Only carriers are used for selective transport of materials d) All of the above are true about channel and carrier proteins. 6. If it can cross a membrane, a solute will move from a hyposmotic/hyperosmotic (circle or highlight the correct one) solution to a hyposmotic/hyperosmotic (circle or highlight the correct one) solution. 7. Water always moves from a hyposmotic/hyperosmotic (circle or highlight the correct one) solution to a hyposmotic/hyperosmotic (circle or highlight the correct one) solution.All are protiens of cell membrane that are involved in flow of nerve impulse except 1-channel proteins 2-carrier protiens 3-peripheral protiens 4-integral protiens Also give explanation
- What sort of cellular changes would you expect a sailor sick with scurvy to experience? O Their collagen (an extracellular matrix component) would be diminished, resulting in fewer binding sites for integrins. The end result would be less adherent cells. O Their collagen (a cytoskeletal fiber) would be diminished, resulting in a loss of contractile motion within the cell, affecting both cell migration and muscle function.You're studying secretion of antibodies by B-cells. B-cells are immune cells that make antibodies (antibodies are proteins) and secrete them outside of the cell (in other words, the protein is made in the cell, and is 'spit' out). Given the B-cell's role as antibody secreter what organelles do you expect to see in large amounts/volume within the cell? What type of transport is antibody secretion? Does the secretion of antibody require energy (ie., is this type of transport "active")?As we age our skin becomes thin and easily tears. One potential reason to explain would be if adjacent cells within the skin lose the ability to attach to each other strongly. Another reason could be that cells lose the ability to attach strongly to the extracellular matrix. Compare and contrast these membrane functions and suggest which proteins might be “lost” as we age to cause the loss of attachment function in each scenario