which of the following is a weak acid commonly found in citrus fruits
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ATI TEAS 7

Mometrix TEAS 7 science practice test

1. Which of the following is a weak acid commonly found in citrus fruits?

Correct answer: C

Rationale: Citric acid is a weak acid commonly found in citrus fruits like lemons, oranges, and limes. It is responsible for the sour taste in these fruits. Sulfuric acid (option A), hydrochloric acid (option B), and nitric acid (option D) are all strong acids that are typically used in laboratory settings and industrial processes, not naturally found in citrus fruits. Therefore, the correct answer is option C.

2. What is the smallest bone in the human body?

Correct answer: A

Rationale: The correct answer is A: Stapes (Middle ear bone). The stapes, located in the middle ear, is indeed the smallest bone in the human body. Despite its small size, the stapes is vital for hearing as it transmits and amplifies sound vibrations, contributing significantly to auditory perception. Choices B, C, and D are incorrect. The patella (kneecap) is the largest sesamoid bone in the human body, not the smallest bone. Phalanges are the bones in fingers and toes, not the smallest bone overall. Ribs are long bones that protect the chest cavity, not the smallest bone in the body.

3. Which of the following best describes a group of cells working together?

Correct answer: B

Rationale: The correct answer is B: Tissue. Tissue is a group of cells that work together to perform a specific function. Organelle refers to specialized structures within a cell, organ is a structure made up of different types of tissues working together, and organ system is a group of organs working together to perform complex functions. Therefore, tissue is the most appropriate term to describe a group of cells working together.

4. Which part of the brain is responsible for balance and coordination?

Correct answer: B

Rationale: The correct answer is the cerebellum. The cerebellum is responsible for balance, coordination, and fine motor control. It integrates sensory information from the vestibular system in the inner ear and proprioceptive information from muscles and joints to coordinate voluntary movements. The cerebrum is primarily involved in higher brain functions like thinking and decision-making. The medulla oblongata controls vital autonomic functions such as breathing and heart rate. The thalamus serves as a relay station for sensory information before sending it to the cerebral cortex for further processing.

5. What is a characteristic property of acids?

Correct answer: B

Rationale: The correct characteristic property of acids is a sour taste. Acids release hydrogen ions when dissolved in water, giving them a sour taste. Bitter taste is a property associated with bases, not acids. Slippery feel is a characteristic property of bases, due to their soap-like nature. Sweet taste does not accurately describe the characteristic property of acids, as they are known for their sour taste.

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