TEAS Test 7 science quizlet

TEAS Test 7 science quizlet Related

Review TEAS Test 7 science quizlet related questions and content

Which term best describes the gradual change in a species over time in response to environmental pressures?

  • A. Punctuated equilibrium (rapid bursts of evolution)
  • B. Gradualism (slow and continuous change)
  • C. Founder effect (genetic drift in a small population)
  • D. Adaptive radiation (rapid diversification of a species)
Correct Answer: B

Rationale: A) Punctuated equilibrium refers to rapid bursts of evolution followed by long periods of stability, rather than gradual change over time in response to environmental pressures. B) Gradualism is the process by which species evolve through slow and continuous changes over time in response to environmental pressures. This gradual change can lead to the development of new traits and adaptations. C) Founder effect is a type of genetic drift that occurs when a small group of individuals establishes a new population, leading to a loss of genetic variation compared to the original population. It does not specifically describe the gradual change in a species over time. D) Adaptive radiation is the rapid diversification of a species into a variety of forms to exploit different ecological niches, but it does not specifically refer to the gradual change in response to environmental pressures. Therefore, the term that best describes the gradual change in a species over time in response to environmental pressures is 'Gradualism.'

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Which organelle is responsible for cellular respiration, producing ATP for energy?

  • A. Nucleus
  • B. Mitochondria
  • C. Golgi apparatus
  • D. Vacuole
Correct Answer: B

Rationale: The correct answer is B) Mitochondria. Mitochondria are known as the powerhouse of the cell because they are responsible for cellular respiration, a process that produces ATP (adenosine triphosphate) for energy. The other organelles listed, such as the nucleus, Golgi apparatus, and vacuole, have distinct functions within the cell and are not directly involved in cellular respiration. The nucleus contains genetic material, the Golgi apparatus is involved in protein processing and packaging, and the vacuole is responsible for storage and maintaining cell turgor pressure.

What is the muscular sac in the female body that nourishes and protects a developing fetus during pregnancy?

  • A. Ovary
  • B. Fallopian tube
  • C. Uterus
  • D. Vagina
Correct Answer: C

Rationale: The correct answer is the uterus. The uterus is a muscular organ in the female body where a developing fetus is nourished and protected during pregnancy. It is the site where a fertilized egg implants and grows into a fetus. The ovaries produce eggs, the fallopian tubes transport the egg to the uterus for potential fertilization, and the vagina serves as the birth canal and the passage for menstrual blood to exit the body. Therefore, the uterus plays a crucial role in pregnancy by providing a nurturing environment for the developing fetus.

What is the muscular tube that transports sperm from the testes to the urethra called?

  • A. Epididymis
  • B. Vas deferens
  • C. Seminal vesicle
  • D. Cowper's gland
Correct Answer: B

Rationale: The correct answer is the vas deferens. It is the muscular tube responsible for carrying sperm from the testes to the urethra. After sperm is produced in the testes, it moves to the epididymis for maturation and storage. The seminal vesicle contributes fluid to semen, but it is not the tube that transports sperm. Cowper's gland also adds fluid to semen but is not involved in transporting sperm. Therefore, the vas deferens is the accurate choice for the muscular tube that transports sperm.

The pancreas secretes digestive enzymes into the small intestine. What enzyme breaks down proteins into amino acids?

  • A. Pepsin
  • B. Lipase
  • C. Amylase
  • D. Trypsin
Correct Answer: D

Rationale: Trypsin is the correct enzyme that breaks down proteins into amino acids. It is produced by the pancreas and released into the small intestine to facilitate protein digestion. Pepsin is an enzyme from the stomach that also breaks down proteins, amylase targets carbohydrates, and lipase works on fats. In this context, since the question specifies the pancreas and small intestine, the correct answer is Trypsin as it is the pancreatic enzyme responsible for protein breakdown in the small intestine.

What happens to the gravitational potential energy of an object as it falls freely?

  • A. It decreases
  • B. It increases
  • C. It remains constant
  • D. It becomes zero
Correct Answer: A

Rationale: The correct answer is A: 'It decreases.' When an object falls freely, its height decreases, resulting in a decrease in gravitational potential energy. The potential energy is converted into kinetic energy as the object accelerates due to gravity. This conversion process continues until the object reaches the ground or its lowest point, where the gravitational potential energy is minimal or zero. Choice B is incorrect because gravitational potential energy decreases, not increases, during free fall. Choice C is incorrect as gravitational potential energy changes due to the change in height. Choice D is incorrect as the gravitational potential energy does not instantly become zero but decreases gradually as the object falls.

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