ATI TEAS 7
Biology
1. A person who carries a pathogen but does not exhibit any symptoms is considered:
- A. Asymptomatic carrier
- B. Opportunistic pathogen
- C. Nosocomial infection
- D. Vector-borne disease
Correct answer: A
Rationale: Rationale: An asymptomatic carrier is a person who carries a pathogen (such as a virus or bacterium) but does not show any symptoms of the infection themselves. Despite not exhibiting symptoms, asymptomatic carriers can still spread the pathogen to others, potentially causing illness in those who come into contact with them. This term specifically refers to individuals who are infected but do not develop symptoms, distinguishing them from symptomatic carriers who do show signs of the infection. Option A is the most appropriate choice in this context as it accurately describes a person who carries a pathogen without displaying symptoms. B) Opportunistic pathogen: This term refers to pathogens that typically do not cause disease in healthy individuals but can become pathogenic in individuals with weakened immune systems. C) Nosocomial infection: This term refers to infections that are acquired in a hospital or healthcare facility. D) Vector-borne disease: This term refers to diseases
2. The innate immune system provides:
- A. Nonspecific, immediate defense against pathogens
- B. Specific, long-term immune response through memory cells
- C. Both (a) and (b)
- D. Neither (a) nor (b)
Correct answer: A
Rationale: The correct answer is A: 'Nonspecific, immediate defense against pathogens.' The innate immune system is the body's first line of defense against pathogens and provides a rapid, nonspecific response. It includes physical barriers like the skin, chemical barriers like stomach acid, and cellular responses like inflammation. This system does not involve memory cells or provide long-term immunity, which are characteristics of the adaptive immune system. Therefore, option A accurately describes the function of the innate immune system as a quick and nonspecific defense mechanism.
3. Based on the passage, which statement is MOST likely to be true about the author's stance on social media?
- A. It should be completely banned due to its overwhelmingly negative impact.
- B. It can be a valuable tool but needs stricter regulations to address emerging issues.
- C. Its benefits outweigh its drawbacks, and concerns about its use are exaggerated.
- D. Technology alone cannot solve the problems associated with social media use.
Correct answer: B
Rationale: The emphasis on critical thinking and responsible online behavior suggests an acknowledgment of social media's potential while advocating for addressing its downsides, aligning with B.
4. Stephanie delegates effectively if she has authority to act, which is BEST defined as:
- A. having responsibility to direct others
- B. being accountable to the organization
- C. having legitimate right to act
- D. telling others what to do
Correct answer: A
Rationale: The correct answer is A: 'having responsibility to direct others.' Effective delegation involves entrusting tasks and responsibilities to others while still maintaining ultimate accountability. Authority to act means having the responsibility to direct others, making decisions, and overseeing the completion of tasks. This definition aligns with the core concept of delegation, where individuals are empowered and authorized to carry out specific duties. Being accountable to the organization (option B) is important but does not fully capture the proactive nature of delegation. Having a legitimate right to act (option C) is essential for effective delegation, but it is more about the formal authorization rather than the active responsibility to direct others. Simply telling others what to do (option D) is a narrow and authoritarian view of delegation that does not encompass the collaborative and empowering nature of effective delegation.
5. What is the primary function of ribosomes in the cell?
- A. To synthesize lipids and other cellular components
- B. To package and transport proteins
- C. To break down macromolecules
- D. To translate mRNA into proteins
Correct answer: D
Rationale: Rationale: Ribosomes are cellular organelles responsible for protein synthesis. They read the genetic information encoded in messenger RNA (mRNA) and use this information to assemble amino acids into a specific sequence, forming a protein. This process is known as translation and is essential for the production of proteins that carry out various functions in the cell. Options A, B, and C do not accurately describe the primary function of ribosomes in the cell.
6. What is the relationship between mass and inertia?
- A. Mass is a measure of inertia
- B. Mass has no relation to inertia
- C. Inertia is a measure of weight
- D. Inertia increases with decreasing mass
Correct answer: a
Rationale: Mass is a measure of the amount of matter in an object and is directly related to its inertia.
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