What is the primary source of energy for nearly all of earth's ecosystems?

Tiny organisms that break down and absorb nutrients from dead organisms are called

Which of these components of a cell functions like the digestive system in the human body? A. Golgi apparatus B. Mitochondria C. Endoplasmic D. Plasma Membrane

Briefly explain how the Calvin cycle is related to photosynthesis, describe what is formed at the end of the Calvin cycle, and explain what happens to this molecule once it exits the cycle. for 200 pts

Which statement regarding isocitrate dehydrogenase is false? a. It catalyzes a reversible reaction under physiological conditions. b. It catalyzes an oxidative decarboxylation. c.

In each cell, humans have 22 pairs of chromosomes called:

What is the genotype for individual D

Are aliens and UFO's real

What happens once intercelluar signals reach the inside of a cell using some type of receptor? the signal stops. the signal is transferred to the cytoplasm. the signal produces protein. intracelluar communaction takes over.

What is extinction and why does it occur?

Corn smut and wheat rust are crop diseases caused by fungi.