Plant cells are eukaryotic cells that differ in several key aspects from the cells of other eukaryotic organisms. These distinctive features include the following: A large central vacuole, a water-filled volume enclosed by a membrane known as the tonoplast that maintains the cell's turgor, controls movement of molecules between the cytosol and sap, stores useful material and digests waste proteins and organelles. A cell wall composed of cellulose and hemicelluloses, pectin and in many cases lign
Everything you ever wanted to know about a penguinâs habitat. A penguinâs habitat is naturally cold and watery. All varieties of the penguin are native to the southern hemisphere, and in fact, they can be found on every continent in the southern hemisphere.he penguinâs habitat can range from a sheet of ice to warm, sandy beaches, depending on what kind of penguin it is. However, one thing that is constant across all types of penguins is the need for a body of water nearby.
Penguins are a group of aquatic, flightless birds. They live almost exclusively in the Southern Hemisphere, with only one species, the Galapagos penguin, found north of the equator. Highly adapted for life in the water, penguins have countershaded dark and white plumage, and their wings have evolved into flippers. Most penguins feed on krill, fish, squid and other forms of sea life caught while swimming underwater. They spend about half of their lives on land and half in the oceans. Although alm