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Why is a sponge hard when dry and soft when wet?
A dry sponge is hard because the water has evaporated, leaving the sponge's cellular structure collapsed and less flexible. When water is added, the cells absorb water and expand, allowing the sponge to become soft and flexible.
What is a flexible network for the internal support of a sponge?
Spongin A+
Is a flexible network for the internal support of a sponge?
Yes, a flexible network of protein fibers called spongin provides structural support within a sponge's body. This network helps maintain the sponge's shape and allows for water flow and nutrient exchange through its pores.
Why sponge is solid but still compressible?
Sponge is solid because its particles are closely packed together, but it is compressible due to the nature of its porous structure. The empty spaces or pores within the sponge allow it to easily deform and compress when pressure is applied, making it squishy and flexible.
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 is the difference between a brick and a sponge?
A brick is a hard, solid building material made from clay or concrete, while a sponge is a soft, porous material used for cleaning or absorbing liquids. Bricks are typically heavy and durable, while sponges are lightweight and flexible.
What tampons are the most flexible?
Either sponge tampons, soft tampons, or cloth tampons.Sponge tampons are made from natural sponge, although the sponge in its natural state is quite hard when dry, you moisten the sponge with water before insertion which softens it up a bit.Soft tampons are made from synthetic sponge, they are like thick disks which are very squishy and inserted high in your vagina up close to your cervix, they can also be lubricated before use.Cloth tampons are tampons made from cloth, sometimes they can be knitted too, so they are as flexible as the cloth that they are made from and how tightly compact they are changes flexibility.Some women find that using an applicator is uncomfortable, so they prefer a tampon like OB, which does not require an applicator and is easy to insert. All major brands of tampons, if inserted correctly, should be comfortable and flexible.
What is a sponge sponge domain?
A sponge domain is a type of protein domain characterized by its ability to bind and regulate various biomolecules, often involved in cellular signaling or structural functions. These domains are typically rich in proline, glycine, and other flexible residues, giving them a "sponge-like" quality that allows them to accommodate different partners. Sponge domains play a crucial role in cellular processes by modulating interactions with other proteins, RNAs, or lipids, thereby influencing various biological pathways.
What materials make up a sponge?
A sponge is typically made up of small, porous holes called "ostia" which are surrounded by a network of cells known as "choanocytes." These cells help to filter and move water through the sponge's body, enabling it to feed and respire. Sponges also contain a protein called "spongin" which gives them their flexible and soft texture.
What happens to a sponge when it is cut in half?
When a sponge is cut in half, each half is capable of regenerating into a new sponge. The cells within the sponge are flexible and can reorganize to form a new structure if provided with appropriate conditions. This regenerative ability allows sponges to quickly recover from physical damage.
Is sponge a rigid body?
No, a sponge is not considered a rigid body. It is a porous and flexible material that can easily deform when subjected to external forces. Unlike rigid bodies, which maintain a constant shape and volume, sponges can compress and expand, allowing them to absorb liquids and return to their original shape.
Why sponge can be compressible easily by being a solid?
A sponge is a flexible solid with many air holes. because it is flexible the sponge can be pressed into the air holes when the pressure is released shape memory returns it to its former shape.
