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Molds and casts may be produced when sediments fill molds left by decayed organisms.
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∙ 13y ago
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What are molds and casts preserved by?
Molds and casts are preserved by a solidifying. Wet plaster or other materials dry or cure until solid and hardened.
How does a mold fossil form?
There are thousands of known species of molds. Like all fungi, molds derive energy not through photosynthesis but from the organic matter in which they live. Typically, molds secrete hydrolytic enzymes, mainly from the hyphal tips. These enzymes degrade complex biopolymers such as starch, cellulose and lignin into simpler substances which can be absorbed by the hyphae. Molds reproduce through small spores, which may contain a single nucleus or be multinucleate. Mold spores can be asexual (the products of mitosis) or sexual (the products of meiosis); many species can produce both types. Mold spores may remain airborne indefinitely, may cling to clothing or fur, or may be able to survive extremes of temperature and pressure.
Who named the cuttlefish?
Ooh, good question. While I doubt anybody could say precisely who named it, the etymology of the word cuttlefish could be interesting. My guess would be that the animal gets its name from the cuttlebone rather than the other way round - cuttlebones can be carved to make molds for metal castings. I reckon they were used by cutlers - people who made knives and forks, cutlery - to produce molds which the cutlery was then cast inside. Anyone else got any ideas?
How do fossils form in 5 ways?
Freezing, Amber, Tar seeps, Casts and molds Petrification
What animals don't have knees?
Worms <><><> And plants. And snakes, fish, whales, dolphins, bacteria, molds, etc
What do molds produce that kills bacteria?
Since molds don't have an immune system, they produce antibiodics that kill bacteria.
What molds produce substances that kill bacteria?
The answer is penicillin
The fruiting bodies in cellular slime molds and sporangia in a cellular slime molds?
Produce spores
What do some molds produce?
Antibiotics, which are helpful in treating many bacterial infections, are produced by some molds. Penicillin is a notable example of an antibiotic produced by molds.
Can mushrooms yeast and molds produce their own food?
yes
Protists that produce a multinucleate glob of cytoplasm is?
plasmodial slime molds
What are two foods that you rely on molds and yeasts to produce?
The the foods are Bread and Beer
Which is NOT true of the slime molds?
Meiosis occurs in the plasmodial nuclei to produce haploid spores.
What are called certain molds and soil bacteria produce bacteria killing substances?
antibioitcs
Beneficial and harmful aspects of molds?
Molds are necessary in making soy sauce and blue cheeses like Roquefort. A mold called Rhizopus is used to produce the steroid drug cortisone. Molds and other fungi play a critical role as environmental decomposers, working to break down organic materials such as dead trees. Some molds are used in the industrial process because of the chemicals they produce. For example, the mold Aspergillus terreus is used in making plastic.
What are Some molds produce substances that kill bacteria?
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Some molds produce what substance that kill bacteria?
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