1commensalism is a symbiosis where one species and the other is neither harmed nor gains a benefit.

is harmed

benefits

is unaffected

none of the above

2which of the following human impacts has not negatively affected the environment?

pollution

pesticides

removal of predators

none of the above

What is the ecological role of food chains and food webs

Many body systems work together for proper functioning of the body and to maintain internal homeostasis. the works to break down food eaten before exercising. the takes in the nutrients obtained from the food. the body sweats as a mechanism to cool off, because the is working to flush out toxins.

Which of the following statements is true regarding a basic amino acid? a.) the hydrophilic r group of a basic amino acid will be located on the interior of a protein b.) the positively charged r group of a basic amino acid could bind dna c.) the r group of a basic amino acid would only be able to form covalent bonds with other molecules d.) a basic amino acid would be considered both polar and hydrophobic e.) all of the above