In what way are phagocytosis and pinocytosis similar?Describe one way each process is important within the body.

Which one ( phagocytosis, pinocytosis,receptor-mediated endocytosis) is the opposite of exocytosis?

1) All of the following are functions of proteins within a membrane except __________. A)Maintaining the fluidity of membranes B)transport ions and other polar substances C)receptors to bond molecules outside of the cell D)helping the body to recognize its own cells   2)  Which of the following organelles is not part of the endomembrane system A)mitochondria B)golgi apparatus C)lysosomes D)rough endoplasmic reticulum   3) Which cytoskeletal element is composed of actin and is involved with muscle contraction and provided strength to cells during stretching and compression? A)Microfilimants B)Intermediate filaments C)Microtubules D)Flagella

Plasma membrane is permeable toa) ATPb) Glucosec) K+d) Urea

The smooth endoplasmic reticulum is responsible for a) bringing substances into the cell. b) fusing with the plasma membrane. c) synthesizing lipids d) modification of lipids and proteins

The cell membrane   a)  has no function that is known.   b)  is responsible for starting mitosis.   c)  controls what substances enter the cell.   d)  has a thick cuticle around the outside.

Which of the following processes could be/are conducted by lysosomes? A) synthesis of mRNA B) Krebs cycle C) phagocytosis – the breakdown of ingested bacteria or autophagy-the breakdown of damaged mitochondria inside the cell D) RNA synthesis E) all of these.

Biopsies from aggressive cancers often have cells that contain several nuclei per cell when viewed through a microscope. Which scenario could explain how such a multinucleated cell might have come to be? (a) The cell underwent repeated mitosis with simultaneous cytokinesis. (b) The cell had multiple S phases before it entered mitosis. (c) The cell underwent repeated mitosis, but cytokinesis did not occur. (d) The cell underwent repeated cytokinesis but no mitosis. (e) The cell actually went through meiosis and not mitosis.

For which of the following apply: the extracellular space is eliminated here near the surface between two cells. A) Zonula adherens B)Zonula  occluded C) Desmosome D) Gap junction E) Hemidesmosome