What is nitrogen fixation and why are bacteria crucial to this cycle of life?

A group of related genes is called a?

What made Cumberland Road important during the 19th century? It was the first time stones were used as a surface. It was the first time a road went to many towns and cities. It was a very dangerous road. It was Americas first toll highway.

To be considered a living thing an organism must be able to A. reproduce. B. digest food. C. move on its own. D. breathe oxygen.

The first codon, uug, is the code for a specific amino acid. use your text to determine which amino acid matches the codon uug.

Rooted aquatic plants can be found in areas with lower sunlight exposure trie or faluse

Which example best describes one way that humans contribute to the water cycle? A. formation of genetic material B. evaporation of sweat from skin C. production of oxygen D. fixation of nitrogen into ammonia

How would signaling be affected if a mutation caused a g protein to replace gdp with gtp on its own without needing to be activated by the g protein-coupled receptor?

The role of an organism in the ecosystem is called its A. niche B. habitat C. species D. environment

Which condition will increase the rate of chemical reaction?

Why does DNA has an overall negative charge?