The purpose of the anaerobic fermentation processes is to Recycle NAD+ to keep glycolysis going. Make ATP
Make carbon dioxide and water
Provide energy to keep the Krebs cycle going

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.