MMSC 490 (1-4) quiz (100% Correct answers)

The feature that most clearly distinguishes eukaryotes from prokaryotes is the presence of .......... in eukaryotic cells. -RNA molecules -nucleus -ribosomes -oxidative phosphorylation correct answers nucleus Cytoplasmic organelles are.. -absent in prokaryotic cells and present in eukaryotic cells. -present in both prokaryotic and eukaryotic cells. -absent in both prokaryotic and eukaryotic cells. -present in prokaryotic cells and absent in eukaryotic cells. correct answers absent in prokaryotic cells The eukaryotic nucleus contains .......... DNA molecule(s). a single linear multiple linear multiple circular a single circular correct answers multiple linear Stanley Miller applied electric sparks to a reducing atmosphere of methane, ammonia, water, and hydrogen, and the resulting products showed that under these conditions, nucleotides can form. nucleotides can polymerize into nucleic acids. amino acids can polymerize into polypeptides. amino acids can form. correct answers amino acids can form Which energy-producing process is thought to have come first during cellular evolution? Glycolysis Proteolysis Oxidative phosphorylation Photosynthesis correct answers Glycolysis At the time life arose on Earth, Earth's atmosphere contained abundant amounts of all of the following except O2. N2. H2. H2S. correct answers O2 CO2 to organic compounds radically changed Earth by producing O2. cellulose. sugar. correct answers O2