Which statement below is true of both chloroplasts and mitochondria? a. both use energy directly from the sun to drive metabolic pathways.
b. both are involved in creating compounds that store energy.
c. both create high energy products from low energy reactants.
d. both perform cellular respiration to convert glucose in ATP.

What is thought to have caused the mass extinction at the end of the cretaceous period?

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

What do all macromolecules have in common with each other? oa. they all are formed from the same elements.ob. they all have major roles in cell membranesoc. they all act as catalysts in the body.od. they all have peptide bonds between carbon atoms.