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A cheat sheet that is used contrary to the rules of an exam may need to be small enough to conceal in the palm of the hand Cheat sheet in front of a juice box. A cheat sheet (also cheatsheet) or crib sheet is a concise set of notes used for quick reference. Cheat sheets were historically used by students without an instructor or teacher's ...
Scavenger receptors are mainly found on myeloid cells and other cells that bind to numerous ligands, primarily endogenous and modified host-molecules together with pathogen-associated molecular patterns (PAMPs), and remove them. [2] The Kupffer cells in the liver are particularly rich in scavenger receptors, includes SR-A I, SR-A II, and MARCO. [3]
It appears that the major scavenger cell systems of vertebrates and invertebrates are based on a dual-cell principle of waste clearance. [11] In vertebrates, distinct populations of scavenger endothelial cells represent the professional pinocyte, clearing the blood of a wide range of soluble macromolecules and small particles (<200 nm) by clathrin-mediated endocytosis, [13] while the ...
Many large carnivores that hunt regularly, such as hyenas and jackals, but also animals rarely thought of as scavengers, such as African lions, leopards, and wolves will scavenge if given the chance. They may also use their size and ferocity to intimidate the original hunters (the cheetah is a notable victim, rather than a perpetrator).
In some cases, death feigning is used by a predator. For example, the predatory cichlid Nimbochromis livingstonii lies on its side on the bottom sediments until approached by scavengers attracted to what appears to be a dead fish, whereupon H. livingstoni abandons the pretence, rights itself and attacks the scavenger. [19]
Around 80–95% of carnivores are solitary and hunt alone; the others including lions, [7] wild dogs, [8] spotted hyenas, [9] chimpanzees, [10] and humans hunt cooperatively, at least some of the time. [11] Cooperative hunting has also been documented in birds of prey [12] and large marine vertebrates such as groupers and moray eels. [1]
The first Internet Scavenger Hunt was developed in 1992 by Rick Gates. [1] He was a professor at the University of California at the time. He created the hunt to encourage adults to explore the resources on the Internet. [2] Gates distributed the questions to various Usenet newsgroups, LISTSERV discussion lists, and Gopher and FTP sites.
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