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Regulatory T cells (Treg) suppress the action of other T cells. This inhibits immune responses to self-antigens, aiming to prevent the immune system from attacking normal self cells.
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Cell theory states what?
Cell theory teaches that _____. all cells come from other cells all living things are made up of a cell or cells cells are the basic building blocks of life but do not constitute life itself
Cell-surface proteins allow a cell to what with other cells?
They allow Cells to communicate with other Cells.
What is the cells control center and directs all of the cells activity?
The nucleus controls what the cell does because it contains the genetic instructions of the cell.
Why does penicillin kill only actively multipling cells and lysozyme will kill cells in any stage of growth?
Penicillin inhibits transpeptidase, and enzyme that is necessary for bacterial cell wall synthesis. If a cell is not actively multiplying, then no cell wall synthesis is occurring and, therefore, penicillin does not inhibit the bacteria.
Cell theory in order?
All known living things are made up of one or more cells.All cells arise from pre-existing cells by division.The cell is the fundamental unit of structure and function in all living organisms.The activity of an organism depends on the total activity of independent cells.Energy flow (metabolism and biochemistry) occurs within cells.Cells contain hereditary information (DNA) which is passed from cell to cell during cell division.
What is the name of the natural anticoagulant found in the blood?
Heparin, the natural anticoagulant contained in basophil and mast cell granules. It inhibits thrombin by enhancing the activity of antithrombin III. Heparin also inhibits the intrinsic pathway. antithrombin III and protein c inhibit the activity of other intrinsic pathway procoagulants.
What is the characteristic property of metabolically active cell?
Metabolically active cells have many characteristic properties. A healthy growth of cell number and cell activity is one property. Low numbers of decaying cells and active cell proliferation are other characteristics of metabolic activity.
What part of the cell directs the cells activity?
The Cytoplasm
What is the main controller of cell activity in animal cells?
the nucleaus
What type of cell activity would increase cells?
Fission
Cell theory states what?
Cell theory teaches that _____. all cells come from other cells all living things are made up of a cell or cells cells are the basic building blocks of life but do not constitute life itself
Cell-surface proteins allow a cell to what with other cells?
They allow Cells to communicate with other Cells.
Where does most of the metabolic activity in a cell occur?
Most of the metabolic activity in the cell occur in the cell's cytoplasm, specifically in the mitochondria in eukaryotic (not bacterial or archaeal) cells.
T-cell lymphocytes that inhibit the activity of B cell lymphocytes?
suppressor T-cells
Mode of action of ceftriaxone?
The bactericidal activity of ceftriaxone results from inhibition of bacterial cell wall synthesis This antimicrobial agent Inhibits bacterial cell wall synthesis by binding to one or more of the penicillin-binding proteins (PBPs) which in turn inhibits the final transpeptidation step of peptidoglycan synthesis in bacterial cell walls, thus inhibiting cell wall biosynthesis. Bacteria eventually lyse due to ongoing activity of cell wall autolytic enzymes (autolysins and murein hydrolases) while cell wall assembly is arrested.
Describe how cancer cells differ from normal cells both structurally and in cell activity?
Cancer cells differ from normal cells structurally as they look majorly clumped with unusual patterns or formations. Cancer cells differ in cell activity compared to normal cells greatly as they are constantly growing and dividing while normal cells do not and stop growing and dividing when touching another cell.
What is the cells control center and directs all of the cells activity?
The nucleus controls what the cell does because it contains the genetic instructions of the cell.
