ATI TEAS 7
TEAS 7 science practice questions
1. What is the structure that surrounds individual muscle fibers, providing support and aiding in the transmission of force generated during muscle contraction?
- A. Tendon
- B. Endomysium
- C. Perimysium
- D. Epimysium
Correct answer: B
Rationale: The endomysium is the connective tissue layer that surrounds individual muscle fibers, providing support and aiding in the transmission of force generated during muscle contraction. It is crucial for maintaining the structural integrity of muscle fibers and facilitating the transmission of force within them. Tendons (option A) connect muscles to bones, perimysium (option C) surrounds bundles of muscle fibers known as fascicles, and epimysium (option D) encases the entire muscle. The endomysium specifically targets the structure that directly supports and aids in force transmission within individual muscle fibers, making it the correct answer in this context.
2. The framework of bones, cartilage, ligaments, and tendons that provides structure, support, and facilitates movement is part of the:
- A. Muscular system
- B. Skeletal system
- C. Nervous system
- D. Endocrine system
Correct answer: B
Rationale: The skeletal system consists of bones, cartilage, ligaments, and tendons that work together to provide structure, support, protection for internal organs, and facilitate movement. It is responsible for supporting the body's framework and protecting vital organs. The muscular system (option A) consists of muscles that work with the skeletal system to produce movement but does not include bones, cartilage, ligaments, and tendons. The nervous system (option C) is responsible for transmitting signals throughout the body to control movement and other functions. The endocrine system (option D) is a collection of glands that produce hormones to regulate various bodily functions but is not primarily involved in structure, support, and movement as the skeletal system is.
3. Which enzyme found in saliva is responsible for breaking down carbohydrates into smaller molecules like sugars?
- A. Pepsin
- B. Amylase
- C. Lipase
- D. Trypsin
Correct answer: B
Rationale: The correct answer is B. Saliva contains an enzyme called amylase, which specifically targets carbohydrates and breaks them down into smaller molecules like sugars. Pepsin, choice A, is an enzyme found in the stomach that breaks down proteins, not carbohydrates. Lipase, choice C, is responsible for breaking down fats, not carbohydrates. Trypsin, choice D, is an enzyme that breaks down proteins in the small intestine, not carbohydrates. Therefore, choices A, C, and D are incorrect for this question.
4. The ureters are paired tubes that transport urine from the:
- A. Bladder to the urethra
- B. Kidneys to the bladder
- C. Urethra to the kidneys
- D. Skin to the kidneys
Correct answer: B
Rationale: The ureters are responsible for carrying urine from the kidneys to the bladder. Once urine is produced in the kidneys, it travels down the ureters to be stored in the bladder until it is eliminated from the body through the urethra. Therefore, the correct answer is B, 'Kidneys to the bladder.' Choices A, C, and D are incorrect as they do not accurately describe the function of the ureters in the urinary system. Choice A, 'Bladder to the urethra,' is incorrect because the ureters carry urine from the kidneys to the bladder, not from the bladder to the urethra. Choice C, 'Urethra to the kidneys,' is incorrect as the flow of urine is from the kidneys to the bladder via the ureters, not in the reverse direction. Choice D, 'Skin to the kidneys,' is unrelated to the urinary system; the ureters are not involved in transporting substances from the skin to the kidneys.
5. What is the term for the time it takes for a wave to complete one full cycle?
- A. Frequency
- B. Amplitude
- C. Period
- D. Wavelength
Correct answer: C
Rationale: The period of a wave is the time it takes for one complete cycle to occur. It is the duration between two successive points in the wave that are in the same phase. Frequency, on the other hand, refers to the number of cycles of a wave that occur in a given time period. Amplitude represents the maximum displacement of a wave from its equilibrium position. Wavelength is the distance between two consecutive points on a wave that are in phase. Therefore, the correct answer is 'Period' as it specifically refers to the time taken for a wave to complete one full cycle, distinguishing it from the other choices which represent different properties of a wave.
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