Which of the following are shared by both prokaryotes and eukaryotes: Cytoplasm

Question

Which of the following are shared by both prokaryotes and eukaryotes: Cytoplasm Cytoplasm and Nucleus Cytoplasm and Mitochondria Cytoplasm and Ribosomes Which of the following classifications is incorrect: Eukarya, Archaea, Bacteria Fungi, Plants, Animals, Protists, Bacteria Fungi, Plants, Animals, Protists, Archaea Prokaryotes, Eukaryotes A single molecular with both polar and nonpolar portions is called ______. Amphipathic Zwitterion Hydrophobic Hydrophillic Hydrogen bonds will not form with which of the following functional groups: Hydroxyl group Carbonyl group Amino group Aromatic Which of the following protein structures cannot be denatured? Quaternary structure Primary structure Tertiary structure Secondary structure Which of the following chromatography techniques is automated? Size-exclusion chromatography Affinity chromatography Ion-exchange chromatography High performance liquid chromatography

Explanation / Answer

1.d.Cytoplasm is found in every cell whether it is prokaryote or eukaryote.All prokaryotes have 70S (where S=Svedberg units) ribosomes while eukaryotes contain larger 80S ribosomes in their cytosol.  

3.a.having both hydrophilic or polar and hydrophobic non polar parts.

4.d. A hydrogen bond is the electrostatic attraction between two polar groups that occurs when a hydrogen (H) atom covalently bound to a highly electronegative atom such as nitrogen (N), oxygen (O), or fluorine (F) experiences the electrostatic field of another highly electronegative atom nearby.

5.b.When a protein is denatured, secondary and tertiary structures are altered but the peptide bonds of the primary structure between the amino acids are left intact. Since all structural levels of the protein determine its function, the protein can nolonger perform its function once it has been denatured.

6.d.HPLC is an automated technique.

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