0
According to the online Merriam-Webster dictionary, spongin is a "scleroprotein that is the chief constituent of flexible fibers in sponge skeletons"
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
Tiny hard needles of silica or calcium carbonate that make up the skeleton of some sponges?
spicules
What elements is silica sand made of?
silicon and oxygen
A milky white mineral made of silica?
A milky white mineral made up of silica is quartz. Quartz is the second most abundant mineral on the Earth's crust.
What are silicates made of?
Silica tetrahedra, made up of silicon and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.
What are oozes named after?
What they are made of. Calcareous ooze is made from calium carbnate shells of cooclithophores, foraminifera, and other things with carbonate shells. Siliceous ooze is made of silica shells of radiolaria (really cool looking), diatoms, and anything else with a silica shell.
What protein makes up a sponge?
The flexible protein fibers that make up a sponge are called spongin. The hard, tiny spikes found in sponges are called spicules, and they are made of silica or calcium carbonate.
What 2 materials may compose a sponge skeleton?
1. spicules (calcium carbonate or silica) 2. spongin (protein)
Why would spongin and spicules discourage predators from eating sponges?
spongin and spicules are the sponges body support and defence
What is Demospongia?
The Demospongiae are the largest class in the phylum Porifera. Their "skeletons" are made of spicules consisting of fibers of the protein spongin, the mineral silica, or both. They contain 90% of all species of sponges.
What are the subgrops of sponges?
calcarea - have calcite spicules, often have calcite exoskeletons glass sponges - silica spicules, no exoskeleton demosponges - silica spicules, may have exoskeleton, made of aragonite if present
How spongin and spicules discourage predator from eating sponges?
Spongin and spicules are the sponges body support and defence. They both cover a sponge, and if a predator eats it it will be hurt. It will be hard to eat it, because of the sharpness and roughness of the outside. Well at least in the spicules case.
How do spongin and spicules discourage predators from eating sponges?
Spongin and spicules are the sponges body support and defence. They both cover a sponge, and if a predator eats it it will be hurt. It will be hard to eat it, because of the sharpness and roughness of the outside. Well at least in the spicules case.
Infer how spongin and spicules discourage predators from eating sponges?
They get scared ofrece predators
What type of sponge material supports a sponges body structure?
A network of spongin or spicules.
What is the function of the spongin ans spicules?
spongin is the soft material that makes up a sponge´s skeleton and spicule provides support for the sponge.
What is the main difference between the classes Hexactinellida Calcarea and Demospongiae?
In calcarea spicules are calcareous, in hexactinellida spicules are silicious and hexa radiated, in demospongiae spicules are absent but spongin fibres are present. that's why demosponges are used as bathroom sponges
Why are bath sponges soft?
The harder silica or calcium spicules are absent and the softer spongin remains.Answer:They are soft because they should not hurt the body parts while having a bath. the skin is too soft to use a bath sponge, if the sponge is too hard.
