TEAS 7 Science -with 100% verified solutions 2024-2025, Exams of Nursing

Download TEAS 7 Science -with 100% verified solutions 2024-2025 and more Exams Nursing in PDF only on Docsity! TEAS 7 Science -with 100% verified solutions 2024-2025 Which of the following organelles is responsible for modifying, sorting, and packaging proteins and lipids? Golgi apparatus How do neurons communicate with each other? Through electrical and chemical signals. Which of the following structures in the nephron is responsible for reabsorbing ions, water, and nutrients? Proximal tubule What is the function of the neuromuscular junction? To connect muscle fibers to motor neurons Explanation: The neuromuscular junction is a type of synapse where neuronal signals from the brain or spinal cord interact with skeletal muscle fibers causing them to contract. The activation of many muscle fibers together causes muscles to contract, which in turn can produce movement. During the menstrual cycle, which structure in the ovary produces progesterone and prepare the endometrium for potential implantation? Corpus luteum What is the normal flora? A variety of microbial species found in certain areas of the human body. Which gland, located in the mediastinum, plays a key role in the development and maturation of T-lymphocytes? Thymus Explanation: This is located and the bottom of the bronchus. Which of the following statements about bacteria and archaea is true? Bacteria can perform photosynthesis while archaea cannot. A patient with chronic renal failure is undergoing hemodialysis. What process allows for the removal of waste products and excess fluid from the patient's bloodstream during hemodialysis? Diffusion Which type of bond is responsible for the unique properties of water and plays a crucial role in the structure of DNA and proteins? Hydrogen Bonds What is the relationship between atomic mass and mass number? Atomic mass is very close to mass number but with some deviation in the decimal place. Explanation: Atomic mass is also known as atomic weight and is the weighted average mass of an atom of an element based on the relative natural abundance of that element's isotopes. The mass number, on the other hand, is a count of the total number of protons and neutrons in an atom's nucleus. Which of the following refers to a condition in which a patient experiences difficulty breathing while lying down, but their breathing improves when they sit up or stand? Orthopnea What is the function of inflammatory cytokines released during the early response to bacterial infection? Initiating cell recruitment and local inflammation. How does the use of a catalyst affect the activation energy of a chemical reaction? It decreases the activation energy required for the reaction. We have an expert-written solution to this problem! Which of the following is an example of a storage form of glucose in the human body? Glycogen Which of the following is a mechanism that the body uses to regulate blood pH levels? Increased respiration to remove excess CO2. What is the purpose of using PCR (polymerase chain reaction) in the laboratory? To amplify specific regions of DNA. What is the relationship between viruses and their host cells during replication? Viruses use the host's replication processes to produce progeny virus particles. A nurse is caring for a patient who has been declared brain dead and is awaiting organ donation. Which of the following interventions is most important to preserve the viability of the organs? Maintaining normal body temperature and blood pressure. A nurse is caring for a patient who has suffered a TBI after falling from a height. The nurse knows that the severity of the injury depends on the speed at which the patient hit the ground. Which of the following factors affects the terminal velocity of a falling object? The shape and surface of the object. Note: Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration. What is the organelle that encapsulates the contents of the cell and plays a vital role in regulating the movement of substances in and out of the cell? Plasma membrane A nurse is reviewing the results of a patient's DNA sequencing test, which was performed to diagnose a genetic disorder. The nurse notices that the patient has a mutation in one of the bases of the DNA. Which of the following is the correct term for this type of mutation? Substitution What is a control group used for in scientific studies? To establish causality by isolating the effect of an independent variable. A nurse is conducting a research study to compare the effects of two different pain medications on postoperative patients. The nurse randomly assigns the patients to either receive medication A or medication B. Which of the following is the best way to ensure that the study is valid and reliable? Use a placebo group and a double-blind technique for giving the medications. Explanation: Both technique are the best ways to reduce bias.