ATI TEAS 7
physics
1. What happens to the force of gravity between two objects when the distance between them is doubled?
- A. ) The force increases by a factor of 2
- B. The force increases by a factor of 4
- C. The force decreases by a factor of 2
- D. The force decreases by a factor of 4
Correct answer: d
Rationale: According to the inverse square law of gravity, the force of gravity decreases by a factor of 4 when the distance between two objects is doubled.
2. The main purpose of using strong vocabulary in your writing is to:
- A. Impress the reader with your knowledge of complex words.
- B. Confuse the reader and make them think harder.
- C. Communicate your ideas clearly and precisely.
- D. Shorten your sentences and save space.
Correct answer: C
Rationale: While using complex vocabulary can showcase knowledge, the primary goal is to ensure the reader understands your message. Precise words eliminate confusion and ambiguity.
3. What is the shape of the DNA molecule?
- A. Linear
- B. Circular
- C. Double helix
- D. Straight chain
Correct answer: C
Rationale: Rationale: The shape of the DNA molecule is a double helix. This structure was first described by James Watson and Francis Crick in 1953. The double helix shape consists of two strands that are twisted around each other in a spiral. This shape allows DNA to be compactly stored within the cell nucleus and provides stability to the molecule. The other options (A) Linear, (B) Circular, and (D) Straight chain do not accurately describe the shape of the DNA molecule.
4. The phrase "survival of the fittest" refers to:
- A. Organisms with the most complex anatomical structures are more likely to survive and reproduce.
- B. Organisms that demonstrate the best adaptations to their environment have a higher chance of survival and reproduction.
- C. All organisms have an equal probability of survival and reproductive success regardless of their traits.
- D. Only the strongest and most aggressive individuals within a population will survive and reproduce.
Correct answer: B
Rationale: Rationale: The phrase "survival of the fittest" is often associated with the concept of natural selection, which was proposed by Charles Darwin. Natural selection is the process by which organisms that are best adapted to their environment are more likely to survive and reproduce, passing on their advantageous traits to the next generation. This process does not necessarily favor the most complex anatomical structures (option A) or the strongest and most aggressive individuals (option D). Instead, it emphasizes the importance of adaptations that enhance an organism's ability to survive and reproduce in a specific environment. Option C is incorrect because natural selection results in differential reproductive success based on an organism's traits, meaning that not all organisms have an equal probability of survival and reproductive success.
5. What is the name of the condition characterized by inflammation of the small intestine?
- A. Appendicitis
- B. Celiac disease
- C. Gastritis
- D. Crohn's disease
Correct answer: D
Rationale: Rationale: A) Appendicitis is inflammation of the appendix, not the small intestine. B) Celiac disease is an autoimmune disorder triggered by gluten consumption that damages the small intestine, but it is not characterized by inflammation alone. C) Gastritis is inflammation of the stomach lining, not the small intestine. D) Crohn's disease is a chronic inflammatory condition that can affect any part of the gastrointestinal tract, but it commonly involves the small intestine. Symptoms of Crohn's disease include abdominal pain, diarrhea, weight loss, and fatigue.
6. What type of lens is thinner at the center than at the edges and causes light rays to diverge?
- A. Convex lens
- B. Concave lens
- C. Diverging lens
- D. Plano-convex lens
Correct answer: b
Rationale: A concave lens is thinner at the center than at the edges and diverges light rays.
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