What type of organisms can generate organic molecules and obtain energy from inorganic molecules like iron, sulfur, and hydrogen?
a. chemoautotrophs
b. photoautotrophs
c. heterotrophs
d. homotrophs
e. organotrophs
A
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Eukaryotic cells can't simply split in two because _____.
A) their DNA is contained within a single nucleus B) they have a single mitochondrion that must first be replicated C) eukaryotic organelles must be equally divided among the daughter cells D) all of the choices make simple fission unworkable
To see objects smaller than those that can be resolved by a light microscope, we usually use microscopes that employ a beam of:
a. electrons b. photons c. protons d. neutrons e. X-rays
In the image above, the substance indicated as "C" is a(n) _____
a. inhibitor b. regulatory molecule c. substrate d. coenzyme e. cofactor
©McGraw-Hill EducationConsider the cladogram shown. Based on this cladogram, which species has the greatest number of ancestral character states?
A. 1 B. 2 C. 3 D. 4 E. 5