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Anatomy Week 3
Activity + Quiz
| Question | Answer |
|---|---|
| Which of the following is not a cytoskeleton element? centriole microtubule intermediate filament microfilament | centriole |
| This organelle is primarily a sac of powerful digestive enzymes called acid hydrolases. | lysosome |
| letter indicate the rough endoplasmic reticulum | C |
| The inside of the cell is composed largely of a gel-like substance called | cytoplasm |
| Which area of the cytoplasm near the nucleus coordinates the building and breaking of microtubules in the cell? | centrosome |
| This membranous organelle contains oxidase and catalase enzymes | peroxisome |
| Ribosomes may be either free within the cytoplasm or bound to a membrane system known as the | rough endoplasmic reticulum |
| A spherical membrane-bound structure that contains the genetic material of the cell and is often referred to as the “command center” of the cell is the | nucleus |
| In the matrix of the plasma membrane, a variety of proteins are embedded. Some of these proteins serve as passageway for Na+ ions or glucose. These proteins are called | transport proteins |
| Of the following, the only organelle that has a double membrane structure is the | mitochondrion |
| Which is integral proteins in the plasma membrane is false? They determine which molecules are transported through the membrane Some attach to the glycocalyx They are more abundant by volume than the membrane phospholipids. | They are more abundant by volume than the membrane phospholipids. |
| Often referred to as the “power plant” of the cell, which organelle is the site of ATP production? | mitochondrion |
| Cisternae of this organelle are continuous with the nuclear envelope. | rough endoplasmic reticulum |
| Phospholipids of the plasma membrane are arranged | as a bilayer with their nonpolar tails sandwiched between the polar heads. |
| letter indicates the Golgi apparatus | D |
| The plasma membrane is composed of all of the following except phospholipids. cholesterol. glycoproteins. tubulin protein. | tubular proteins |
| This organelle is characterized by folded membranes called cristae. | mitochondria |
| This organelle has both a cis and a trans face. | Golgi apparatus |
| This membranous organelle is the site of protein synthesis for proteins that are secreted by the cell. | rough endoplasmic reticulum |
| This organelle is numerous in liver and kidney cells. | peroxisome |
| Ribosomes are organelles that | float in the cytoplasm and attach to the endoplasmic reticulum |
| A major function of the cell membrane is to | control what enters and leaves the cell |
| The outer boundary of a human cell is called the | plasma membrane |
| Which type of junction is formed when membrane channels of adjacent plasma membranes adhere to each other? | gap junction |
| Which of the following cytoskeleton elements are the largest in diameter? | microtubules |
| letter indicates the nucleolus | A |
| This organelle primarily modifies products from the rough ER, and it resembles a stack of hollow saucers, one cupped inside the next. | Golgi apparatus |
| which letter indicates the mitochondrion | E |
| Which of the following is a type of cell extension that lines the intestines and other areas of the body? | Microvilli |
| which letter indicates the plasma membrane | B |
| Lysosomes perform autophagy. This means that they: | break down proteins and cytoplasm that are not needed by “self eating.” |
| Granules or threads within the nucleus are called: | chromatin |
| Main cell structures include all of the following except: organelles. plasma membrane. interstitial fluid. cytoplasm. | interstitial fluid |
| DNA is a major constituent of which cell organelle? | Nucleus |
| Which are the organelles that allow for the recycling of amino acids in the cell? | Proteasomes |
| The nucleus is the only structure in the cell that contains DNA. | False |
| Tiny indentations of the plasma membrane that resemble caves are called: | caveolae |
| Which of the following is not a function of the integral membrane proteins? Acting as receptors Signal transduction Identification of “self” All of the above are functions of the integral membrane proteins | All of the above are functions of the integral membrane proteins |
| The enzyme catalase is an important chemical in the functioning of the: | peroxisomes |
| Projections from the cell that move materials and mucus are called: | cilia |
| Which organelle processes and packages material to be secreted? | Golgi apparatus |
| Which organelles consist of vesicles that have pinched off from the Golgi apparatus? | Lysosomes |
| The cell extension that contains microfilaments is called: | microvilli |
| Which of the following organelles is considered a nonmembranous organelle? | Ribosome |
| In the cell membrane, the hydrophilic part of the phospholipid molecule: | faces the exterior of the cell. is in the center of the phospholipid bilayer. |
| The nucleolus is composed chiefly of: | rRNA |
| Which of the following is not true about ribosomes? | Surrounded by a membrane structure |
| Which cell fiber serves as part of our “cellular muscles?” | Microfilament |
| Skin cells (epithelial) are held tightly together by | demosomes |
| A specialized cell structure that propels the sperm is the: | flagellum |
| Damage to the centrosome and centrioles in a cell would have the greatest impact on which cell function? | cell division |
| The inner membrane of what double-membrane structure is contorted into folds called cristae? | Mitochondrion |
| Which of the following is not true of the rough endoplasmic reticulum? | It makes lipids and carbohydrates |
| 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 |
| The identification function of the cell membrane is carried out by the: | glycoprotein molecules |
| The largest human cell, measuring about 150 μm, is a: | female sex cell or ovum |
| The ____ is often called the microtubule organizing center. | centrosome |
| ATP production occurs within which organelle? | Mitochondrion |
| The presence of which substance in the cell membrane keeps it from breaking too easily? | Cholesterol |
| The structure that separates the contents of a cell from the surrounding tissue is known as: | Plasma membrane |
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