What enzymes do lysosomes contain?
Lysosomes are membrane-bound vesicles that contain digestive enzymes, such as glycosidases, proteases and sulfatases. Lysosomal enzymes are synthesized in the endoplasmic reticulum (ER), are transported to the Golgi apparatus, and are tagged for lysosomes by the addition of mannose-6-phosphate label.
What organelle is responsible for respiration?
The “powerhouses” of the cell, mitochondria are oval-shaped organelles found in most eukaryotic cells. As the site of cellular respiration, mitochondria serve to transform molecules such as glucose into an energy molecule known as ATP (adenosine triphosphate).
What acts like a digestive system in an animal cell?
When a cell needs energy, I take in nutrients, break them down, and supply energy to the cell. I absorb light energy from the sun and use it to convert carbon dioxide and water to sugar and oxygen. Lysosomes. I act like a digestive system in an animal cell.
What is the jelly like fluid inside the cell?
Cytoplasm
Do all vertebrates have a complete digestive system?
Vertebrates have evolved more complex digestive systems to adapt to their dietary needs. Some animals have a single stomach, while others have multi-chambered stomachs. Birds have developed a digestive system adapted to eating unmasticated food.
Do nematodes have a complete digestive system?
Unlike the flatworms in which food and waste enter and exit from the same opening, nematodes have a complete digestive system. An animal with a complete digestive system has a mouth at one end, a long tube with specialized parts in the middle, and an anus at the other end.
Why are Ctenophores not in cnidaria?
Unlike cnidarians, with which they share several superficial similarities, they lack stinging cells. Instead, in order to capture prey, ctenophores possess sticky cells called colloblasts. In a few species, special cilia in the mouth are used for biting gelatinous prey.
How many digestive openings do Ctenophores have?
All have two tissue layers, a single digestive opening, and stinging cells called nematocysts. They have radial symmetry. What are the General characteristics of ctenophores? You just studied 23 terms!
What cnidarian body form usually swims free?
medusa
What is the difference between cnidarians and Ctenophores?
Both cnidarians and ctenophores are diploblastic animals. Cnidarians exhibit radial symmetry whereas ctenophores exhibit biradial symmetry. Both contain tentacles, surrounding their mouth. The main difference between cnidarians and ctenophores is their body symmetry.
What triggers a Nematocyst to activate?
When a cnidocyte is triggered it fires a stinging cell called a nematocysts. When stimulated to discharge the permeability of the nematocyst changes and the internal osmotic pressure causes water to rush into the capsule. The cnidocyte is the trigger that releases the stinging cell, a nematocyst.
What’s the function of a Nematocyst?
Nematocysts are stinging organelles used by members of the phylum Cnidaria (e.g., jellyfish, anemones, hydrozoans) for a variety of important functions including capturing prey and defense. Nematocysts are the fastest-known accelerating structures in the animal world.
What are the three types of nematocysts?
There are three main types of cnidae: nematocysts, ptychocysts, and spirocysts, with many variations. Depending on the species, one or more types may be on the organism. Nematocyst. This is the main type, present in all Anthozoa.
What are the 2 main locations of nematocysts?
Cnidarians contain specialized cells known as cnidocytes (“stinging cells”) containing organelles called nematocysts (stingers). These cells are present around the mouth and tentacles, and serve to immobilize prey with toxins contained within the cells. Nematocysts contain coiled threads that may bear barbs.
What is the difference between Cnidocyte and Nematocyst?
A cnidocyte is present on the skin of the creature (on the tentacles in the case of jellyfishes) whereas a nematocyst is present inside the cnidocyte. A cnidocyte is like an inverted cell whereas a nematocyst is a bag-like and globular structured subcell.
Where do hydras live naturally?
freshwater
What do hydras usually eat?
Hydra oligactis, as in all Cnidaria, are strictly carnivorous and eat many different kinds of small metazoans, including annelids, copepods, cladocerans, and insects. Hydra capture their food by paralyzing and killing the food organism by means of nematocysts, which are discharged into the prey.
What is the real life Hydra?
In ancient Greek myth, the Hydra was a multi-headed monster that grew two more heads for every one that it lost. As it turns out, the real-life animal named after this mythical beast may be even more tenacious. A new study finds that hydra — spindly, freshwater polyps — can live seemingly forever, without aging.