2024/2025 TEAS 7 Science with 100% Correct Verified Questions and Answers, Exams of Health sciences

Download 2024/2025 TEAS 7 Science with 100% Correct Verified Questions and Answers and more Exams Health sciences in PDF only on Docsity! 2024/2025 TEAS 7 Science with 100% Correct verified Questions and answers 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? Estrogen A patient with a history of heart failure is prescribed a medication that increases urine output to reduce fluid buildup. Which of the following statements best describes the mechanism of action of the prescribed medication? Enhances glomerular filtration rate What is the hallmark of adaptive immunity? Immunologic memory Which of the following hormones is responsible for regulating the body's metabolism and energy levels? Thyroxine Explanation: Thyroxine (T4) is a hormone produced by the thyroid gland and controls the body's metabolism. 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: Adenine Thymine Cytosine Guanine Why is water sometimes called the "universal solvent"? Because water is good at dissolving ions and polar molecules. What is hydrogen bonding? The attraction between the relatively positive areas of one molecule and the relatively negative areas of another molecule. Which cytotoxic lymphocyte granules contain serine proteases that induce apoptosis in target cells? Granzymes Explanation: Granzymes are a family of serine proteases that are stored in and secreted from the cytotoxic granules of cytotoxic T lymphocytes (CTL) and natural killer cells (NK). They work with perforin, a pore-forming toxin, to induce apoptosis in target cells. Which type of lymphocyte is capable of killing tumor cells and infected cells without prior sensitization? Natural Killer Cells Explanation: NK Cells are large granular lymphocytes that are capable of destroying cells infected by viruses or bacteria and susceptible tumor cells WITHOUT prior sensitization and restricition by MHC antigens. Helper T Cells are a type of WBC that helps other immune cells respond to infections but do not directly kill infected or tumor cells. B Cells are a type of WBC that produces antibodies to fight infections but do not directly kill infected or tumor cells. Cytotoxic T Cells are a type of WBC that can kill infected or tumor cells but require prior sensitization to do so. Which factor is primarily responsible for the movement of water across cell membranes in osmosis? Concentration of solute particles in the solution. Which process involves the fusion of male and female gametes resulting in the formation of a zygote? Fertilization Which of the following is a potential complication of carbon monoxide poisoning? Formation of carboxyhemoglobin. Which of the following is an example of a storage form of glucose in the human body?