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Anatomy Activity 3
Week 3
| Question | Answer |
|---|---|
| This membranous organelle contains oxidase and catalase enzymes. | peroxisome |
| This organelle is numerous in liver and kidney cells. | peroxisome |
| Ribosomes may be either free within the cytoplasm or bound to a membrane system known as the | rough endoplasmic reticulum |
| This organelle is primarily a sac of powerful digestive enzymes called acid hydrolases. | Lysosome |
| 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 |
| Which of the following is not a cytoskeleton element? | centriole |
| This organelle primarily modifies products from the rough ER, and it resembles a stack of hollow saucers, one cupped inside the next. | golgi apparatus |
| A major function of the cell membrane is to | control what enters and leaves the cell. |
| Phospholipids of the plasma membrane are arranged | as a bilayer with their nonpolar tails sandwiched between the polar heads. |
| This membranous organelle is the site of protein synthesis for proteins that are secreted by the cell. | rough endoplasmic reticulum |
| The inside of the cell is composed largely of a gel-like substance called | cytoplasm |
| The outer boundary of a human cell is called the | plasma membrane |
| This organelle is characterized by folded membranes called cristae. | mitochondria |
| Which of the following is a type of cell extension that lines the intestines and other areas of the body? | microvilli |
| Cisternae of this organelle are continuous with the nuclear envelope. | rough endoplasmic reticulum |
| Which area of the cytoplasm near the nucleus coordinates the building and breaking of microtubules in the cell? | centrosome |
| Which of the following cytoskeleton elements are the largest in diameter? | microtubules |
| This organelle has both a cis and a trans face. | golgi apparatus |
| Often referred to as the “power plant” of the cell, which organelle is the site of ATP production? | mitochondrion |
| Which type of junction is formed when membrane channels of adjacent plasma membranes adhere to each other? | gap junction |
| Of the following, the only organelle that has a double membrane structure is the | mitochondrion |
| Which of the following statements about integral proteins in the plasma membrane is false? | They are more abundant by volume than the membrane phospholipids. |
| The plasma membrane is composed of all of the following except | tubulin protein. |
| Ribosomes are organelles that | float in the cytoplasm and attach to the endoplasmic reticulum. |
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Janelleu4771
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