Exam 3: Matter, Energy, and Life

Which of the following is not a step in the global nitrogen cycle?

The motion of a rock rolling downhill is known as __________ energy.

Water molecules readily dissolve ionic substances such as sugar because of the covalent bonds between the hydrogen and oxygen atoms.

The law of conservation of matter tells us that matter:

A cell is:

An ecosystem consists of:

All members of a species that live in the same area, at the same time, make up a(n):

Productivity in an ecosystem has to do with:

A fat or oil is to a _______, as an enzyme is to a _______.

A compound is composed of _________.

Phosphorus cycles through the Earth's ecosystems:

Metabolism is a collective term for thousands of:

Using examples, compare and contrast the cycling of energy through biological systems and biogeochemical cycles.

About ___________ percent of the solar energy that falls on plants is captured for photosynthesis.

A simple linked feeding series such as grass-rabbit-wolf is known as a(n):

Producers and consumers rely on ____________ to release chemical energy stored as ATP.

The process of __________ allows organisms to use inorganic molecules as an energy source.

Omnivores eat mainly:

The first law of thermodynamics and the law of conservation of matter are similar in that

Many ecologists think of ecosystems and even the Earth as a superorganism because its systems appear to be: