A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student?
Chapter 01: Cellular Biology
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MULTIPLE CHOICE
- A student is observing a cell under the microscope. It is observed to have supercoiled DNA with histones. Which of the following would also be observed by the student?
| a. | A single circular chromosome |
| b. | A nucleus |
| c. | Free-floating nuclear material |
| d. | No organelles |
- A nurse is instructing the staff about cellular functions. Which cellular function is the nurse describing when an isolated cell absorbs oxygen and uses it to transform nutrients to energy?
| a. | Metabolic absorption |
| b. | Communication |
| c. | Secretion |
| d. | Respiration |
A eukaryotic cell is undergoing DNA replication. In which region of the cell would most of the genetic information be contained?
| a. | Mitochondria |
| b. | Ribosome |
| c. | Nucleolus |
| d. | Nucleus |
- The fluid mosaic model for biologic membranes describes membrane behavior. According to this model, which of the following float singly or as aggregates in the fluid lipid bilayer?
| a. | Peripheral membrane proteins |
| b. | Integral membrane proteins |
| c. | Glycoproteins |
| d. | Cell adhesion molecules |
- Which of the following can bind to plasma membrane receptors?
| a. | Oxygen |
| b. | Ribosomes |
| c. | Amphipathic lipids |
| d. | Ligands |
- A nurse is reviewing a report from a patient with metastatic cancer. What finding would support the diagnosis of metastatic cancer? Alterations in extracellular matrix that include:
| a. | Decreased fibronectin |
| b. | Increased collagen |
| c. | Decreased elastin |
| d. | Increased glycoproteins |
- Which form of cell communication is used to relate to other cells in direct physical contact?
| a. | Cell junction |
| b. | Gap junction |
| c. | Desmosomes |
| d. | Tight junctions |
- Pancreatic beta cells secrete insulin, which inhibits secretion of glucagon from neighboring alpha cells. This action is an example of which of the following signaling types?
| a. | Paracrine |
| b. | Autocrine |
| c. | Neurohormonal |
| d. | Hormonal |
- In cellular metabolism, each enzyme has a high affinity for a:
| a. | Solute |
| b. | Substrate |
| c. | Receptor |
| d. | Ribosome |
- An athlete runs a marathon, after which his muscles feel fatigued and unable to contract. The athlete asks the nurse why this happened. How should the nurse respond? A deficiency in ________ can cause impaired muscle contraction.
| a. | GTP |
| b. | AMP |
| c. | ATP |
| d. | GMP |
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