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Harpoon

Harpoon

a spear or javelin used to strike and kill large fish, as whales; a harping iron. It consists of a long shank, with a broad, fiat, triangular head, sharpened at both edges, and is thrown by hand, or discharged from a gun. Harpoon fork, a kind of hayfork, consisting of bar with hinged barbs at one end a loop for a rope at the other end, used for lifting hay from the load by horse power. Harpoon gun, a gun used in the whale fishery for shooting the harpoon into a whale.

Origin: f. Harpon, LL. Harpo, perh. Of Ger. Origin, fr. The harp; cf. F. Harper to take and grasp strongly, harpe a dogs claw, harpin boathook (the sense of hook coming from the shape of the harp); but cf. Also gr. The kite, sickle, and E. Harpy. Cf. Harp.


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Need help with an alien cell (for a plausible fiction)

... allow for movement and sometimes subtance intake. - Flagellum - Tail-like structures that allow for speedy movement. - Cnidocyte - Named after the harpoon-like stinging cells in Cridarians on Earth, cnidocytes are sack-like circular folds in the outer membrane which contain an emencely thin coil, ...

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by TemporalV01D
Tue Feb 08, 2011 1:48 pm
 
Forum: Cell Biology
Topic: Need help with an alien cell (for a plausible fiction)
Replies: 3
Views: 9400

Re: Phyla Porifera and Cnidaria

... secondary metabolites as chemical defense. By which means do Cnidarians seize and consumer faster organisms? Cnidarians use nematocysts (barbed, harpoon-like projections) to capture prey. Most species also produce venoms that are injected via the nematocysts to disable prey. Nematocysts cause ...

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by firechild
Tue Feb 02, 2010 1:23 am
 
Forum: Zoology Discussion
Topic: Phyla Porifera and Cnidaria
Replies: 3
Views: 13076

enzyme and substrate

... their way about everywhere and anywhere just so that they'll stick somehow somewhere? What kind of a viscosity is it in the cleft, do they get harpoon while they spend their time reorientating themselves inside the enzyme? Is the enzyme so large?

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by paperclip
Mon Oct 03, 2005 3:06 pm
 
Forum: Cell Biology
Topic: enzyme and substrate
Replies: 13
Views: 7251

Anisotropy - Help!

... as fumarase, actually approach this limit. My questions are: 1) How do enzymes manage to grab substrates from the solution they are in. Is there a harpoon mechanism present? 2)How can fumarase have such a high enzyme efficiency, it seems that steric factors are neglected or is an exageration that ...

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by paperclip
Sun Oct 02, 2005 7:49 am
 
Forum: General Discussion
Topic: Anisotropy - Help!
Replies: 0
Views: 1305

New Life

... to these regions have learnt that these fish are very easy to catch. They just look at the mud, and wherever they see bubles rising they stick a harpoon and catch it. Reference: any high-school zoology book

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by MrMistery
Wed Sep 28, 2005 6:19 pm
 
Forum: Evolution
Topic: New Life
Replies: 11
Views: 6337
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