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A&P
Biology of the Cell pt 3
| Question | Answer |
|---|---|
| T or F: Microtubles form the internal support of microvilli | False |
| Non-membrane bound organelles include | Proteasomes Centrosomes the cytoskeleton ribosomes |
| Following transcription, _____ is not a modification that can be made to the newly formed mRNA | decarboxylation |
| What is true regarding integral proteins R-I-M | They can act as receptors They act as identity markers for the cell They can act as membrane channels |
| Bulk transport refers to the movement of macromolecules across a selectively permeable membrane. There are two categories of bulk transport mechanisms, ____ and _____ | exocytosis and endocytosis |
| _____ are membrane-enclosed sacs that contain over 50 different enzymes that vary by cell type that are initially formed by vesicles that pinch off from the rough ER | peroxisomes |
| The cis-face of the Golgi apparatus is also called the ____ region | receiving |
| _____ _____ are an example of who might share the same pattern of sugars that extend from their cells to in the form of a glycocalyx | identical twins |
| In facilitaed diffusion, ____ diffuse across a selectively permeable membrane down their concentration gradient | ions and small polar molecules |
| Exocytosis is the process whereby large molecules are secreted _____ the cell | from |
| Ligands are molecules released from one cell that bind to the receptor of another cell. What are types of receptors that can bind ligands? | channel-linked G protein-coupled Enzymatic |
| _____ is the term that is used to describe the process of RNA polymerase being released from the DNA during transcription | termination |
| A pair of cylindrical centrioles perpendicular to one another form the structure called the ____ | centrosome |
| True regarding glycolipids | Located only on the outer layer of the plasma membrane They are important for cell to cell recognition |
| Old or worn out organelles in a cell are removed by an organelle called the | lysosome |
| Microtubules are composed of a protein called | tubulin |
| Classified as part of the endomembrane system P-V-L-G-E | Peroxisomes Vesicles Lysosomes Golgi apparatus ER |
| Desosome membrane junctions are reinforced by | intermediate filaments |
| Body cells communicate to other immune cells that they both belong to the body and are healthy through direct contact that involves which part of the cell? | glycocalyx |
| A _____ is a small, membranous organelle that breaks down hydrogen peroxide | peroxisome |
| Microfilaments are made up of two strands of the protein | actin |
| In general, ____ molecules move across the plasma membrane readily, while ____ molecules need special transport systems to move them across the membrane | smaller, larger |
| Required for transcription | RNA polymerase ribonucleotides DNA |
Created by:
lindseylew