Which lung structure is a tiny sac that functions as an interface for gas exchange between air and blood?

biology questionswhich statement best describes the relationship between activation energy and rate of reaction?

Which phrase best describes a plant that is an epiphyte

What are individual living things called?

The first organisms to grow in new or disturbed areas are called

Describe the features that may result when two plates move together

Friction between a skateboard wheel and the surface produces?

What are two functions of the cell membrane

Why can eukaryotes carry out more specialized functions than prokaryotes can? A) eukaryotes have more organelles B) Prokaryotes have more organelles C) eukaryotes are bigger D) prokaryotes are bigger

How might mendel's conclusions have differed if he had studied two traits determined by alleles carried on the same chromosome?

A healthy immune system depends on an adequate supply of proteins that bind to and neutralize harmful invaders. what are these proteins known as?