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SCI220-01
Week 3
| Question | Answer |
|---|---|
| The cell extension that contains microfilaments is called: | Microvilli |
| The enzyme catalase is an important chemical in the functioning of the: | Peroxisomes |
| ATP production occurs within which organelle? | Mitochondrion |
| Which cell fiber serves as part of our “cellular muscles?” | Microfilament |
| Which of the following is not a function of the integral membrane proteins? | Acting as receptors Signal transduction Identification of “self” |
| Which of the following is not a function of the smooth endoplasmic reticulum? | Provides a site for ribosome attachment |
| Which of the following is not true about ribosomes? | Surrounded by a membrane structure |
| Which organelle processes and packages material to be secreted? | Golgi apparatus |
| The nucleus is the only structure in the cell that contains DNA. | False |
| Projections from the cell that move materials and mucus are called: | Cilia |
| The ____ is often called the microtubule organizing center. | Centrosome |
| How do vesicles move from place to place in an organized way within the cell? | Molecular motors pull them along the microtubules and microfilaments of the cytoskeleton |
| Which of the following does not describe a structure or function of the proteasome? | Breaking down abnormal and misfolded proteins released from the ER Looks like a hollow cylindrical drum made of protein subunits Requires the small protein called ubiquitin to pull proteins in |
| Skin cells (epithelial) are held tightly together by: | Tight junctions |
| A list of the cell fibers from largest to smallest would read: | Microtubules, intermediate filaments, microfilaments. |
| Lysosomes perform autophagy. This means that they: | Break down proteins and cytoplasm that are not needed by “self eating.” |
| The structure in cells that is associated with the enzymatic breakdown (digestion) of foreign material is the: | Lysosome |
| The cell extension that assists epithelial cells in absorption is called: | Microvilli |
| The structure that separates the contents of a cell from the surrounding tissue is known as: | Plasma membrane. |
| Damage to the centrosome and centrioles in a cell would have the greatest impact on which cell function? | Cell division |
| Granules or threads within the nucleus are called: | Chromatin |
| The fundamental organizational unit of life is the: | Cell |
| Tiny indentations of the plasma membrane that resemble caves are called: | Caveolae |
| The identification function of the cell membrane is carried out by the: | Glycoprotein molecules |
| The inner membrane of what double-membrane structure is contorted into folds called cristae? | Mitochondrion |
| Which of the following recognize and destroy nonself cells? | Immune cells |
| Which of the following organelles is considered a nonmembranous organelle? | Ribosome |
| The barrier function of the plasma membrane is accomplished by the: | Phospholipid bilayer |
| Which are the organelles that allow for the recycling of amino acids in the cell? | Proteasomes |
| DNA is a major constituent of which cell organelle? | Nucleus |
Created by:
mecy1980
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