The diffusion of water across a membrane is called

What is the name of an important electron carrier used in photosynthesis?

An organism that uses energy to make it's own food from the inorganic molecules it takes in is a

When cells break down food molecules, energy is

Photosynthesis results in the conversion of

Chlorophyll is located in the ________________ of a chloroplast.

In living things, energy is required for growth and reproduction, movement and __________ of materials across membranes.

This molecule acts as an electron carrier in glycolysis:

Stimuli to which living things respond include

When an atom loses an electron it becomes

During _____________, glucose is broken down into two molecules of pyruvate and some ATP is produced.

A compound light microscope can magnify objects up to

A testable, possible explanation to a given problem is a(n)

During photosynthesis, water is broken down into

Which of the following levels of organization is the largest?

During exothermic reactions, the products have _________ energy than the reactants.

All of the following are organic molecules except

Which statement best describes the effect of pH on an enzyme.

The ability to reproduce, use energy and being composed of cells are characteristics of

Water is a polar molecule due to

Which of the following is the correct sequence of events during aerobic cellular respiration?

When substances are moved from a lower concentration to a higher concentration, energy is used. This is called

Which of the following organisms have cell walls and a nucleus in their cells?

When an output of a system acts to change that system, it is called