Human biology Sophia milestone 1 final

question was answered incorrectly. 1 At what level of protein structure do amino acid chains twist and fold?  Primary  Secondary  Tertiary  Quaternary CONCEPT Proteins 2 Which of the following statements is true?  Eukaryotic cells don't have a nucleus but often have a flagella.  In all cells, the plasma membrane controls what enters and exits.  Prokaryotic cells don't have a nucleus, but they still have a plasma membrane that separates their DNA from their cytoplasm.  All cells are made up of smaller cells. CONCEPT Cell Theory 3 Which set of statements is true concerning the plasma membrane?  It is primarily composed of lipids and it controls what enters and leaves the cell.  It is primarily composed of proteins and nucleic acids, and it controls what enters and leaves the cell.  It is primarily composed of cellular fiber and it controls what enters and leaves the nucleus.  It is primarily composed of lipids and it keeps anything from entering or leaving the cell. CONCEPT Plasma Membrane 4 The Golgi body is a part of the ________.  endomembrane system  Golgi apparatus  endoplasmic reticulum  nuclear envelope CONCEPT Golgi Body 5 When solute concentration is equal inside and outside of a cell, it is __________.  hypertonic  hypotonic  isotonic  selectively permeable CONCEPT Osmosis 6 Which of the following is a biological class?