ATI TEAS 7
physics
1. How does the mass of an object affect its inertia?
- A. Mass has no impact on inertia
- B. Higher mass increases inertia
- C. Higher mass decreases inertia
- D. Mass influences gravitational force, not inertia
Correct answer: B
Rationale: Inertia is the resistance of an object to changes in its state of motion. The greater the mass of an object, the greater its inertia because it requires more force to change its state of motion. This is in line with Newton's first law of motion, which states that an object at rest will stay at rest, and an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an external force.
2. How are genetic markers used in paternity testing?
- A. They identify unique sequences in the father's DNA present in the child.
- B. They analyze the presence or absence of specific alleles for certain genes.
- C. They compare the child's blood type to the parents' blood types.
- D. They measure the child's physical resemblance to the father.
Correct answer: B
Rationale: Rationale: Genetic markers are specific DNA sequences that can vary among individuals. In paternity testing, genetic markers are used to compare the DNA of the child with that of the alleged father. By analyzing the presence or absence of specific alleles (different forms of a gene) at these genetic markers, scientists can determine the likelihood of paternity. This method is more accurate and reliable than comparing blood types or physical resemblance, making option B the most appropriate choice.
3. Nutrients are absorbed into the bloodstream through which part of the digestive system?
- A. Stomach
- B. Large intestine
- C. Small intestine
- D. Esophagus
Correct answer: C
Rationale: The correct answer is C: Small intestine. The small intestine is where most of the absorption of nutrients takes place in the digestive system. Its inner lining is covered with tiny finger-like projections called villi, which increase the surface area for absorption. Nutrients such as carbohydrates, proteins, fats, vitamins, and minerals are absorbed into the bloodstream through the walls of the small intestine. The stomach primarily helps with the initial digestion of food, the large intestine absorbs water and salts, and the esophagus is the tube that carries food from the mouth to the stomach. Therefore, the small intestine is the main site of nutrient absorption in the digestive system.
4. What is the name of the structure that packages DNA in eukaryotic cells?
- A. Nucleosome
- B. Chromatin
- C. Histone
- D. Centromere
Correct answer: A
Rationale: Rationale: - A nucleosome is the basic structural unit of DNA packaging in eukaryotic cells. It consists of DNA wrapped around a core of histone proteins. - Chromatin refers to the complex of DNA and proteins found in the nucleus of a eukaryotic cell, including nucleosomes. - Histones are the proteins around which DNA is wrapped to form nucleosomes. - Centromere is a region of a chromosome where the two sister chromatids are joined and to which spindle fibers attach during cell division.
5. What is the term for the particles moving around within a substance?
- A. Ions
- B. Atoms
- C. Molecules
- D. Kinetic energy
Correct answer: C
Rationale: In most cases, the particles moving within a substance are individual molecules or atoms, depending on the state of matter.
6. She wants to ensure that every task is carried out as planned. Which of the following tasks is
- A. Instructing the members of the standards committee to prepare policies
- B. Reviewing the existing policies of the hospital
- C. Evaluating the credentials of all nursing staff
- D. Checking if activities conform to schedule
Correct answer: C
Rationale: The correct answer is C because evaluating the credentials of all nursing staff is essential to ensuring that the right individuals are in place to carry out tasks effectively. This task directly contributes to maintaining a high standard of performance and ensuring that the team is qualified for their roles. In contrast, the other options focus on policies, reviews, and schedules, which are important but do not directly address the qualifications and capabilities of the staff responsible for task execution.
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