Answer:
Lysosomes are important to the health of cells they break down excess or worn-out cell parts.
Metabolism is the process by which snakes break down food for energy and expel waste.
The majority of digestion takes place in the snake's j-shaped stomach. Digestive enzymes and pancreatic juice which breakdown protein are secreted by the stomach's cells. The food then enters the small intestines after passing through the pyloric valve.
The snake coats its prey in saliva before dragging it into the oesophagus. The food is then crushed and pushed further into the digestive tract, where it is broken down for nutrients, using the muscles of the animal.
Their metabolisms also slow down as they become colder. Therefore, snakes typically have a very low metabolism because they can periodically get their heat from the sun's energy instead of depending on metabolic heat. Since they require less energy to function, they do not require a steady supply of food.
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<h2>Galapagos Finch </h2>
Explanation:
Darwin's finches are a classical example of an adaptive radiation
- Darwin's finches common ancestor arrived on the Galapagos about two million years ago,during the time that has passed the Darwin's finches have evolved into 15 recognized species differing in body size, beak shape, song and feeding behavior
- Changes in size and form of the beak have enabled different species to utilize different food resources such us insects, seeds, nectar from cactus flowers all driven by Darwinian selection
- From 1831 to 1836, Darwin was part of a survey expedition carried out by the ship HMS Beagle, which included stops in South America, Australia, and the southern tip of Africa
- At each of the stop, Darwin had the opportunity to study the local plants and animals
- Darwin found that nearby islands in the Galapagos had similar but nonidentical species of finches living on them,he noted that each finch species was well-suited for its environment and role
- For example species that ate large seeds tended to have large, tough beaks, while those that ate insects had thin, sharp beaks
- According to Darwin's idea, this pattern would make sense if the Galapagos Islands had long ago been populated by birds from the neighboring mainland
- On each island, the finches might have gradually adapted to local conditions (over many generations and long periods of time)
- This process could have led to the formation of one or more distinct species on each island
- Darwin developed and refined a set of ideas that could explain the patterns he had observed during his voyage
- In his book, On the Origin of Species, Darwin outlined his two key ideas: evolution and natural selection
- Natural selection which also known as “survival of the fittest,” is the more prolific reproduction of individuals with favorable traits that survive environmental change because of those traits; this leads to evolutionary change
Answer:
Gametogenesis is the production of gametes from haploid precursor cells. ... During the process of gametogenesis, a germ cell undergoes meiosis to produce haploid cells that directly develop into gametes.
Explanation:
The first step of chemical digestion starts in the mouth. Saliva, the fluid released by the salivary glands in the mouth, contains an enzyme that breakdowns food starch and turns it into simple sugars. This enzyme is called amylase or also known as alpha-amylase or ptyalin.