5 Written questions
5 Matching questions
- electron microscope
- nuclear envelope
- a focuses a beam of electrons through the specimen or onto its surface.
- b sacs made of membrane
- c encloses the nucleus, separating its contents from the cytoplasm.
- d a semi fluid, jellylike substance
- e region that is not membrane enclosed
5 Multiple choice questions
- of the DNA is in an organelle called the nucleus which is bounded by a double membrane
- membrane-enclosed compartments
- pump excess water out of the cell, thereby maintaining a suitable concentration of ions and molecules inside the cell
- develops by the coalescence of smaller vacuoles themselves derived from the GA and ER.
- consists of a network of membranous tubules and called cisternae. Site for protein synthesis.
5 True/False questions
transmission electron microscope → 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
nuclear lamina → a netlike array of protein filaments that maintains the shape of the nucleus by mechanically supporting the nuclear envelope
endomembrane system → consists of a network of membranous tubules and called cisternae. Site for protein synthesis.
prokaryotic cell → the DNA is concentrated in the nucleoid
food vacuoles → membrane-enclosed compartments