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Which term best defines a bacteria that can survive without oxygen?

The term that best defines a bacteria that can survive without oxygen is "anaerobic." Anaerobic bacteria do not require oxygen for growth and metabolism.


A bird's wing a dolphin's fin and a cat's paw are homologous structures How do those structures support the theory of evolution?

When we trace evolutionary history we find that the earliest limbs were the fins of fishes, which became sturdier when fish started to colonize the land, and which then adapted to various ecological niches in the form of a bird's wings, a cat's paws, and a dolphin's fins. Evolution is economical in nature, it always seems to prefer to modify an existing structure rather than creating something entirely new. This is quite understandable in terms of natural selection. Existing strucures will appear in various forms because not all individuals of a given species are exactly the same, and the form that best suits some ecological niche is going to be selected. This makes possible gradual change.


What tool best complex structures and process?

Diagram


Which phrase best describes the function of cilia?

Cilia are tiny hair-like structures that line the respiratory tract and move in a coordinated manner to sweep mucus and foreign particles out of the airways. They function to protect and clean the respiratory system.


Why do which best describes the sex chromosomes in humans?

Humans have 22 pairs of homologous non-sex chromosomes (called autosomes), and one pair of sex chromosomes, making a total of 46 chromosomes in a genetically normal human.Each member of a pair is inherited from one of the two parents. In addition to the 22 pairs of homologous autosomes, female humans have a homologous pair of sex chromosomes (two Xs), while males have an X and a Y chromosome.