Question

explain the function of an animal cell

Answer 1

Answer:

Animal cells are the basic unit of life in organisms of the kingdom Animalia. They are eukaryotic cells, meaning that they have a true nucleus and specialized structures called organelles that carry out different functions. Animal cells do not have cell walls or chloroplasts, the organelle that carries out photosynthesis.

Answer 2

Answer:

Cells carry out all the processes of the body including producing and storing energy, making proteins, replicating the DNA, and transportation of molecules through the body. Cells are highly specialized to carry out specific tasks. For example, the heart has cardiac muscle cells that beat in unison. Digestive tract cells have cilia, which are finger-like projections that increase surface area for the absorption of nutrients during digestion. Each cell type has the organelles suited to its particular task.

There are over 200 different types of cells in the human body. Red blood cells contain hemoglobin, the molecule that carries oxygen, and they have no nuclei; this is a specialization that allows each red blood cell to carry as much oxygen within it as possible.

Multiple cells form tissues. These groups of cells carry out a specific function. In turn, groups of similar tissues form the body’s organs, such as the brain, lungs, and heart. Organs work together in organ systems, like the nervous system, digestive system, and circulatory system. Organ systems vary depending on the species.

For example, insects have open circulatory systems, where blood is pumped directly into body cavities and surrounds their tissues. Vertebrates such as fish, mammals, and birds, on the other hand, have closed circulatory systems. Their blood is enclosed within blood vessels where it travels to target tissues. In this way, all animal have evolved specific uses for each of the cells in their bodies.

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