MMSC490 Practice Exam 1 (Questions with error-free answers)

Cytoplasmic organelles are correct answers absent in prokaryotic cells and present in eukaryotic cells. E. coli is a useful model system for molecular biology studies because correct answers All of the above Arabidopsis thaliana is a model organism for studying the molecular biology of correct answers Plants The diffraction limited resolving power of a standard light microscope is approximately correct answers 0.2 micrometers A common use of green fluorescent protein (GFP) is to correct answers Visualize proteins in living cells Electron microscopes have a resolution advantage over light microscopes because correct answers the wavelength of electrons is shorter than that of light. In a classic experiment that demonstrated the semiconservative nature of DNA replication, cells were grown first in 14N-containing media and later in 15N-containing media, and DNA was separated by correct answers equilibrium centrifugation. The most abundant molecules in cells are correct answers water A few sugars joined together are called a(n) correct answers Oligosaccharide Steroid hormones are derivatives of correct answers cholesterol.