ATI TEAS 7
Biology
1. Which of the following is NOT a route of transmission for a sexually transmitted infection (STI)?
- A. Unprotected sexual contact
- B. Sharing contaminated needles
- C. Deep kissing
- D. Mother to child during childbirth
Correct answer: C
Rationale: Rationale: A) Unprotected sexual contact is a common route of transmission for sexually transmitted infections (STIs) as many STIs are spread through genital, anal, or oral sex without the use of barrier protection such as condoms. B) Sharing contaminated needles can also transmit STIs such as HIV and hepatitis B and C, especially among individuals who inject drugs. C) Deep kissing, while it can transmit certain infections like herpes simplex virus (HSV-1) or cytomegalovirus (CMV), is not a common route of transmission for most STIs. D) Mother to child transmission during childbirth can occur with certain STIs such as HIV, syphilis, and herpes, where the infection can be passed from the mother to the baby during delivery. Therefore, deep kissing (option C) is the correct answer as it is not a typical route of transmission for most STIs.
2. What is a lifestyle practice that can weaken the immune system?
- A. Getting enough sleep
- B. Eating a balanced diet rich in fruits and vegetables
- C. Managing stress levels
- D. Frequent smoking
Correct answer: D
Rationale: Frequent smoking is a lifestyle practice that can weaken the immune system. Smoking has been linked to various health issues, including suppressing the immune system's ability to fight off infections and diseases. The chemicals in tobacco smoke can impair immune function, making smokers more susceptible to illnesses. On the other hand, getting enough sleep, eating a balanced diet rich in fruits and vegetables, and managing stress levels are practices that support a healthy immune system, rather than weaken it.
3. A news article claims a scientist has discovered a single, universal cure for all allergies. This claim seems:
- A. Entirely plausible and should be immediately accepted.
- B. Unlikely and warrants further investigation and verification.
- C. Impossible because allergies have diverse causes.
- D. Irrelevant as long as it can help some people alleviate suffering.
Correct answer: B
Rationale: Science rarely offers universal solutions for complex biological phenomena. Extraordinary claims require extraordinary evidence and independent verification.
4. Which of the following is an example of a salt?
- A. Sodium hydroxide (NaOH)
- B. Hydrochloric acid (HCl)
- C. Sodium chloride (NaCl)
- D. Sulfuric acid (Hâ‚‚SOâ‚„)
Correct answer: c
Rationale: Sodium chloride is an example of a salt. The other choices are either bases or acids.
5. The axial skeleton consists of bones in the:
- A. Head, neck, and trunk
- B. Arms and legs
- C. Hands and feet
- D. All of the above
Correct answer: A
Rationale: The correct answer is A: 'Head, neck, and trunk.' The axial skeleton includes the bones along the body's central axis, comprising the skull, vertebral column, rib cage, and sternum. These bones provide structural support and protect vital organs. Choices B and C are incorrect as the arms, legs, hands, and feet are part of the appendicular skeleton. Therefore, the axial skeleton primarily encompasses the head, neck, and trunk, making option A the correct choice.
6. What property of a substance measures the amount of matter per unit volume?
- A. Mass
- B. Weight
- C. Density
- D. Volume
Correct answer: c
Rationale: Density measures the amount of matter (mass) per unit volume of a substance.
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