TEAS Test 7 science

TEAS Test 7 science Related

Review TEAS Test 7 science related questions and content

When two cars with different masses collide head-on, which car experiences a greater change in momentum?

  • A. The car with the larger mass
  • B. The car with the smaller mass
  • C. Both cars experience the same change in momentum
  • D. It depends on the initial velocities of the cars
Correct Answer: C

Rationale: In a head-on collision between two cars, the law of conservation of momentum states that the total momentum of the isolated system remains constant before and after the collision. The change in momentum of one car is equal in magnitude but opposite in direction to the change in momentum of the other car. As a result, both cars experience the same change in momentum during the collision. Choice A is incorrect because the change in momentum is the same for both cars due to the conservation of momentum principle. Choice B is incorrect as the smaller mass car does not experience a greater change in momentum. Choice D is incorrect as the initial velocities of the cars do not determine which car experiences a greater change in momentum; it is solely dependent on the masses of the colliding cars.

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Which gland produces the hormone responsible for the 'fight-or-flight' response in stressful situations?

  • A. Thyroid gland
  • B. Pituitary gland
  • C. Adrenal gland
  • D. Pancreas
Correct Answer: C

Rationale: The correct answer is C: Adrenal gland. The hormone responsible for the 'fight-or-flight' response in stressful situations is produced by the adrenal gland. This hormone is called adrenaline (epinephrine) and is released in response to stress, preparing the body to either fight the stressor or flee from it. The other choices are incorrect because the thyroid gland primarily produces hormones that regulate metabolism, the pituitary gland produces various hormones that control other endocrine glands, and the pancreas produces insulin and glucagon to regulate blood sugar levels.

Dendrites are finger-like extensions found on

  • A. Muscle cells
  • B. Connective tissue cells
  • C. Neurons
  • D. Epithelial cells
Correct Answer: C

Rationale: Dendrites are the branched extensions of neurons that receive signals from other neurons and transmit those signals to the cell body. They play a crucial role in the communication process within the nervous system, allowing neurons to communicate with each other and integrate incoming signals to generate responses. The other choices are incorrect because dendrites specifically belong to neurons, not muscle cells, connective tissue cells, or epithelial cells.

Which kingdom primarily consists of multicellular, photosynthetic organisms with cell walls made of cellulose?

  • A. Animalia
  • B. Fungi
  • C. Plantae
  • D. Protista
Correct Answer: C

Rationale: A) Animalia consists of multicellular organisms that lack cell walls and are heterotrophic. Therefore, it does not primarily consist of photosynthetic organisms with cell walls made of cellulose. B) Fungi are multicellular organisms with cell walls made of chitin and are heterotrophic, so they do not fit the description. C) Plantae primarily consists of multicellular, photosynthetic organisms with cell walls made of cellulose. This accurately describes plants. D) Protista is a diverse kingdom that includes unicellular and multicellular organisms with varying characteristics, but it does not primarily consist of multicellular, photosynthetic organisms with cell walls made of cellulose.

Muscle soreness after exercise is often caused by microscopic tears in muscle fibers. This is called

  • A. Atrophy
  • B. Hypertrophy
  • C. DOMS (Delayed Onset Muscle Soreness)
  • D. Spasm
Correct Answer: C

Rationale: Muscle soreness after exercise is often caused by microscopic tears in muscle fibers, leading to Delayed Onset Muscle Soreness (DOMS). Atrophy refers to the wasting away of muscle tissue, hypertrophy is the increase in muscle size, and spasm is an involuntary contraction of a muscle. DOMS typically occurs 24 to 72 hours after intense exercise and is characterized by muscle stiffness, tenderness, and reduced range of motion. It is a normal response to unfamiliar or strenuous physical activity and indicates that the muscles are adapting to the workload. Therefore, the correct answer is C (DOMS) as it specifically describes the phenomenon of muscle soreness resulting from microscopic tears in muscle fibers, distinguishing it from the other choices which refer to different physiological processes or conditions.

What is the term for the maximum amount of solute that can dissolve in a solvent at a specific temperature and pressure?

  • A. Molarity
  • B. Solubility
  • C. Concentration
  • D. Saturation
Correct Answer: B

Rationale: Solubility is the correct term for the maximum amount of solute that can dissolve in a solvent at a specific temperature and pressure. Molarity is a measure of concentration, not the maximum amount that can dissolve. Concentration is a general term for the amount of solute present in a given amount of solvent. Saturation is related to solubility but specifically refers to a state where no more solute can be dissolved in the solvent.

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