Cell communication is important for multiple processes. Which of the following is NOT a reason for cellular communication? O Cellular stasis O Cell growth & division O Cell Death O Homeostasis
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- How does a cell maintain theright amount of every component(organelles, molecules), and how doesit change these amounts as needed(for example, to greatly expand theendoplasmic reticulum when the cellneeds to produce large amounts ofsecreted proteins)?If a tissue in the body has cells that contain a large quantity of gap junctions, this likely means that.. the cells are connected together so tight that there are no spaces between the cells the cells are not connected at all the cells are connected together so tight that it is difficult to rip them apart O the cells are connected together in a way that allows them to share cytoplasmUESTI UN 7 Your body is made up of over 200 different cell types These cell types are different from each other in many ways. Al the phrases below except one, describe ways different cell types vary. One phrase is incorrect Choose the one phrase that does NOT describe how different cell lypes vary The different cell types in your body vary in. O their function (the job they do in the body) O their size their shape O the type of proteins found in them O the set of genes found in them O the molecular reactions that occur in them the set of genes that are transcribed and translated in thern O their location in the body
- 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 adhesionsA cell is like our school. Each part of the cell (and school) has responsibilities thatmust be done and certain organelles (people or places) do them. Identify the function of the following parts of the cell. Then, identify which person does the same job (or a place like it) in the school. The first one is done for you as an example to follow. (Picture attached below).Stem cells, being stem cells, are by definition thesame in all tissues.Explain why or why not.
- What process best characterizes Ca2+ movement from the cytosol (low Ca2+ concentration) into the endoplasmic reticulum (high Ca2+ concentration)? O Calcium movement is spontaneous O Calcium movement involves active transport O Calcium movement occurs by facilitated diffusion using a transporter protein O Calcium movement does not require energy O Calcium movement occurs by passive diffusion AWhat is the benefit to the cell of having a plasma membranethat is selectively permeable? What are some disadvantagesof having a selectively permeable plasma membrane?Assign a function(s) to the following cellular structures: a. plasma membrane b. mitochondrion c. nucleus d. ribosome
- The extracellular matrix is NOT composed of? OActin O Collagens Fibronectin O Proteoglycans O None of theseLina, a teenager, observed one morning as she looked at the mirror that her face has a new pimple. She wondered how she got another pimple when she already pricked it a few days ago. What principle of the cell theory is related to this? Provide a brief explanation as to its relationship with the principle of cell theoryinvolved. ThanksVacuoles are fluid-filled organellespresent in some cells.Which function isNOT normally performed by vacuoles?