ati teas 7 science

Correct Answer: A

Rationale: The correct answer is A: Penicillins. Penicillins target the cell wall of bacteria by inhibiting the synthesis of peptidoglycan, a crucial component of the bacterial cell wall. This disrupts the integrity of the cell wall, leading to bacterial cell lysis. Tetracyclines (B), Macrolides (C), and Fluoroquinolones (D) target different bacterial components like protein synthesis or DNA replication, making them incorrect choices for this question.

Correct Answer: D

Rationale: The correct answer is D because muscle tissue is indeed involved in all the functions listed. Muscles generate body heat through metabolism, stabilize joints by providing support and movement, and help maintain posture by keeping the body in an upright position. Therefore, muscle tissue plays a crucial role in all these functions. Choices A, B, and C are incorrect individually as they only represent a part of the functions that muscle tissue is involved in, whereas the correct answer encompasses all aspects of muscle function in the body.

Correct Answer: B

Rationale: The correct answer is B: Skeletal. Skeletal muscles are responsible for voluntary movements because they are attached to bones and are under conscious control. They enable us to move our body parts intentionally. Smooth muscles (A) are involuntary and found in internal organs. Cardiac muscles (C) are also involuntary and specific to the heart. Option D simply defines a term and is not a type of muscle.

Correct Answer: B

Rationale: Ductility refers to the ability of a substance to be drawn into thin wires. This is because ductile materials can undergo plastic deformation without breaking when subjected to tensile stress. Conductivity (choice A) refers to the ability to conduct electricity, viscosity (choice C) refers to a fluid's resistance to flow, and malleability (choice D) refers to the ability of a substance to deform under compressive stress without breaking. Therefore, the correct answer is B as it specifically relates to the property of being drawn into thin wires.

Correct Answer: B

Rationale: The gravitational potential energy of an object is determined by its position relative to the ground. The higher the object is from the ground, the greater its gravitational potential energy. This is because the gravitational potential energy is directly proportional to the distance from the ground. Therefore, choice B, the distance from the ground, affects the gravitational potential energy of an object the most. Incorrect choices: A: The mass of the object does affect the gravitational potential energy, but it is not the most significant factor. C: The gravitational force affects the weight of an object but does not directly determine its gravitational potential energy. D: The shape of the object does not affect its gravitational potential energy; only the distance from the ground matters.