Explain how feedback inhibition regulates metabolic pathways.

What are organisms called that use inorganic compounds as electron donors in cellular respiration?a. phototrophsb. heterotrophsc. organotrophsd. lithotrophs

What does the chemiosmotic hypothesis claim?a. ATP is generated using phosphates taken from intermediates in the electron transport chain.b. ATP is generated using a phosphate gradient produced by glycolysis and the citric acid cycle.c. ATP is generated using a proton-motive force that is produced by the electron transport chain.d. Water is generated using electrons taken from NADH and FADH2 and transported through the electron transport chain.

Which of the following statements is true?(A)Archaea and bacteria have identical membrane lipids.(B)The cell walls of archaea lack peptidoglycan.(C)Prokaryotes have low levels of genetic diversity.(D)No archaea are capable of using CO2 to oxidize H2, releasing methane.

In terms of nutrition, autotrophs are to heterotrophs asa. kelp are to diatoms.b. archaea are to bacteria.c. slime molds are to algae.d. algae are to slime molds.

Which of the following involves metabolic cooperation among prokaryotic cells?a. binary fissionb. endospore formationc. biofilmsd. photoautotrophy

Which of the following describes a bacterium that lives in the human intestine and causes disease?(A)commensalist(B)decomposer(C)gut mutualist(D)symbiotic pathogen

Bacteria perform the following ecological roles. Which role typically does not involve symbiosis?a. skin commensalistb. decomposerc. gut mutualistd. pathogen

Biologists often use the term 'energy source' as a synonym for 'electron donor.' Why?