5 Written questions
5 Matching questions
- contractile vacuoles
- electron microscope
- a focuses a beam of electrons through the specimen or onto its surface.
- b pump excess water out of the cell, thereby maintaining a suitable concentration of ions and molecules inside the cell
- c eat by engulfing smaller organisms or other food particles
- d region that is not membrane enclosed
- e complexes mad of ribosomal RNA and protein
5 Multiple choice questions
- carries out a variety of tasks in the cell such as synthesis of proteins and their transport into membranes and organelles or out of the cell.
- proteins that have carbohydrates covalently bonded to them
- develops by the coalescence of smaller vacuoles themselves derived from the GA and ER.
- an electron beam scans the surface of the sample. The beam excites electrons on the surface and these secondary electrons are detected. The result is the image
- membrane-bounded vesicles formed by phagocytosis
5 True/False questions
chromatin → structures that carry the genetic information
vesicles → a semi fluid, jellylike substance
endoplasmic reticulum → consists of a network of membranous tubules and called cisternae. Site for protein synthesis.
nuclear lamina → a prominent structure within the nondividing nucleus which appears through the electron microscope as a mass of densely stained granules of fibers adjoining part of the chromatin.
organelles → membrane-enclosed compartments