START QUIZ #1. . The layer from which gametes are formed is columnar epithelium columnar epithelium glandular epithelium glandular epithelium follicular epithelium follicular epithelium germinal epithelium germinal epithelium #2. DNA is found only in nucleus only in nucleus only in cytoplasm only in cytoplasm in both cytoplasm and nucleus in both cytoplasm and nucleus in hybrid form only in hybrid form only #3. Cells could arise only from pre-existing cells: this was proposed by Virchow Virchow Matthias Schleiden and Theodore Schwann Matthias Schleiden and Theodore Schwann Purkinje Purkinje Robert Hooke Robert Hooke #4. The first person to observe the bacteria, protozoa and spermatozoa under the microscope was Leeuwenhoek Leeuwenhoek Theodor Schwann Theodor Schwann Matthias Schleiden Matthias Schleiden Robert Hooke Robert Hooke #5. Who was first to observe the plasma membrane? Palade Palade None of the above None of the above Schwann Schwann William Seifriz William Seifriz Next Page >> < Results > - Congratulations. You passed the exam. Sorry You failed this exam. write the exam again.