Answer:
Epithelium
Explanation:
Epithelium are tissue massage found mostly in the skin and serve as protective covering for the internal and external parts of the body.
A major characteristic of the epithelium is that its layers do not contain any blood vessels such as the artery or vein. The surface of the cells is also usually open to the internal cavity of the organ.
Not sure if this answered your question fully but hope it helps :)
The label A represents mitochondria.
The mitochondria is also called the powerhouse of the cell which converts glucose to energy rich molecules of ATP.
Label B represents nucleus.
Nucleus contains the genetic material or DNA, RNA , nucleolus, chromatin fibres and proteins. It contains the chromosomes which control the hereditary characteristics.
Label C represents lysosome.
Lysosomes contain digestive juices which breaks down large cell parts and large molecules and helps in intracellular digestion.
Label D represents rough endoplasmic reticulum having ribosomes.
The rough endoplasmic reticulum provides surface for protein synthesis. It is also used to transport cellular contents from one cell to another.
It seems that you have missed the necessary details and options for us to answer this question so I had to look for it. Anyway, based on the given description above, the molecule which is considered the "gas" that powers a cell's "engine" is called the Adenosine Triphosphate or ATP. Hope this helps.
Answer:
Monkeys have a prehensile tail that allows them to grab and hold onto tree branches - structural
Moose make mating calls to locate potential mates - behavioral
Whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters - structural
Humans have five toes on each foot to help them maintain balance - structural
Many birds migrate south for the winter in search of food - behavioral
Explanation:
The structural adaptations are adaptations that help the organisms to survive in their environment through development of physical traits that give them an advantage. Such adaptations are the thick layer of blubber of the whales, the five toes of the humans, prehensile tail of the monkeys, rotational toe of the clouded leopard, long of the giraffe etc. The behavioral adaptations are adaptations that help the organisms to survive in their environment, but they manifested through their actions, not their physical traits. Such adaptations are the mating calls of the moos, the migration of the birds in winter, the hibernation of the bears etc.
