Nitrogen-fixing bacteria live in protective nodules (bumps) on the roots of some plants. These bacteria are able to convert gaseous nitrogen from the air into a form of nitrogen that the plants can use. Which type of relationship is this?

Some snake venoms are harmful because they contain enzymes that increase the rate of a reaction that destroys blood cells and tissue cells. The damage caused by such snakebite could best be slowed down by.

How do channel proteins assist cells in the process of diffusion

Penicillin is hydrolyzed and thereby rendered inactive by penicillinase (also known as b-lactamase), an enzyme present in some penicillin - resistant bacteria. the mass of this enzyme in staphylococcus aureus is 29.6 kd.

Which agent of erosion is most likely responsible for deposition of sandbars along ocean shorelines

Which plant part is part of the male reproductive organ in an angiosperm

if research is restricted. then the new discoveries made are limited. which action is most likely to increase the number of discoveries scientist can make?

Which statement about nuclear fission is false? a: nuclear fission takes place in the core of the stars b: the fuel for nuclear fission is often uranium c: nuclear fission releases large amount of energy d: nuclear fission is used to generate

Some monkey flowers (Mimulus guttatus) living near the sites of copper mines can grow in soil containing high concentrations of copper, which is toxic to most plants. Copper tolerance is a heritable trait. Select the three statements that are true.

The lowest level of environmental complexity that includes both living and nonliving factors is the A: Biome B: Community C: Ecosystem D: Biosphere

Which part of the endocrine system is located in the middle of the brain