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ATI TEAS 7 science practice questions, set 5

ATI TEAS 7 · science

ATI TEAS 7 science practice questions set 5

You review anatomy, chemistry, and scientific reasoning the way TEAS 7 reports the science line. Five of the 15 questions include the correct answer and rationale. The other ten keep answers in the study hub. Continue with the ATI TEAS 7 exam guide or more ATI TEAS 7 practice questions.

Five science questions with answers

Cover the key. Write the first action. Then open the rationale and name why the other choices fail.

Question 1

What is the primary source of energy entering most ecosystems?

  1. A. Chemical energy stored in bonds
  2. B. Thermal energy from the Earth's core
  3. C. Light energy from the sun
  4. D. Kinetic energy from wind and water
Show answer and rationale

Correct answer: C — Light energy from the sun

In most ecosystems, the primary source of energy is sunlight. This energy is captured by plants and other photosynthetic organisms through the process of photosynthesis. These organisms convert light energy into chemical energy stored in the bonds of organic molecules, such as glucose. This stored chemical energy is then passed on to other organisms in the ecosystem through the food chain, making sunlight the fundamental source of energy for most ecosystems. Thermal energy from the Earth's core (option B) is not a primary source of energy for ecosystems, as it is not readily accessible to most organisms. Kinetic energy from wind and water (option D) can play a role in some ecosystems, but it is not the primary source of energy. Chemical energy stored in bonds (option A) is a form of energy that is ultimately derived from the sun through photosynthesis, making it a product of the primary energy source rather than the primary source itself.

Question 2

Which of the following is NOT a mechanism that can directly cause evolution by natural selection?

  1. A. Mutations in genes
  2. B. Differential survival and reproduction based on traits
  3. C. Inheritance of acquired characteristics (like strong muscles from working out)
  4. D. Competition for resources in an environment
Show answer and rationale

Correct answer: C — Inheritance of acquired characteristics (like strong muscles from working out)

A) Mutations in genes can introduce new genetic variations into a population, which can be acted upon by natural selection. B) Differential survival and reproduction based on traits is a key component of natural selection, as individuals with advantageous traits are more likely to survive and pass on their genes to the next generation. C) Inheritance of acquired characteristics, also known as Lamarckism, is not a mechanism of evolution by natural selection. Traits acquired during an individual's lifetime (such as strong muscles from working out) are not passed on to offspring. D) Competition for resources in an environment can drive natural selection by favoring individuals with traits that help them better compete for limited resources. Therefore, the correct answer is C) Inheritance of acquired characteristics (like strong muscles from working out), as it is not a mechanism that can directly cause evolution by natural selection.

Question 3

What correction should the student make to the hypothesis: Lengthening the string of the pendulum increases the time it takes the ball to make one complete period?

  1. A. Turn it into an 'if-then' statement.
  2. B. Change 'will increase' to 'increases.'
  3. C. Switch the order of the sentence so that the phrase about the period comes first.
  4. D. No corrections are needed.
Show answer and rationale

Correct answer: A — Turn it into an 'if-then' statement.

The correct answer is A. A hypothesis should be structured as an 'if-then' statement for clarity. This format helps to clearly establish the relationship between the variables and the expected outcome. In this case, the student should frame the hypothesis in a way that if a specific action is taken (lengthening the string), then a specific outcome is expected (increasing the time it takes for the ball to make one complete period). 'If-then' statements are fundamental in hypothesis construction as they clearly define the cause and effect relationship being tested. Choice B is incorrect because changing 'will increase' to 'increases' does not address the structural issue of the hypothesis. Choice C is incorrect as switching the order of the sentence does not fundamentally alter the clarity of the hypothesis. Choice D is incorrect as the hypothesis structure can be improved for better understanding and testing, making correction necessary.

Question 4

Which human body system is correctly matched with its function?

  1. A. Respiratory system; exchanges oxygen and carbon dioxide in the lungs.
  2. B. Circulatory system; transports oxygen to cells and removes carbon dioxide.
  3. C. Lymphatic system; produces antibodies that destroy virally affected or foreign cells.
  4. D. Endocrine system; regulates hormones controlling bodily functions and metabolism.
Show answer and rationale

Correct answer: B — Circulatory system; transports oxygen to cells and removes carbon dioxide.

The circulatory system is responsible for the transportation of oxygen from the lungs to all the body's cells and tissues, as well as removing carbon dioxide from the cells and transporting it back to the lungs to be exhaled. This process is crucial for cellular respiration and the exchange of gases necessary for bodily functions. Choice B accurately matches the role of the circulatory system by describing its function of transporting oxygen to cells and removing carbon dioxide, which is essential for maintaining proper cellular activities. Choices A, C, and D are incorrect because they do not accurately match the body system with its function. The respiratory system primarily involves the exchange of gases in the lungs, not transportation to cells; the lymphatic system deals with immunity through the production of antibodies, not gas exchange; and the endocrine system's main function is hormone regulation, not the transport of gases.

Question 5

What principle explains the relationship between pressure, volume, and temperature for ideal gases?

  1. A. Law of conservation of energy
  2. B. Newton's laws of motion
  3. C. Ideal gas law
  4. D. Archimedes' principle
Show answer and rationale

Correct answer: C — Ideal gas law

The correct answer is the Ideal Gas Law (Choice C). The ideal gas law, PV = nRT, describes the relationship between pressure (P), volume (V), temperature (T), and the number of moles of gas (n) for an ideal gas. It states that the product of pressure and volume is directly proportional to the absolute temperature of the gas when the number of moles is held constant. This law is a fundamental principle in understanding the behavior of ideal gases. Choices A, B, and D are incorrect. The Law of conservation of energy (Choice A) pertains to the principle that energy cannot be created or destroyed; Newton's laws of motion (Choice B) describe the relationship between the motion of an object and the forces acting on it; Archimedes' principle (Choice D) deals with the buoyant force exerted on an object immersed in a fluid. These principles are not directly related to the relationship between pressure, volume, and temperature for ideal gases.

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Question 6

Describe the mechanism by which genes are transmitted from parents to offspring.

  1. A. Blending of parental genes, resulting in an average of their traits.
  2. B. Random assortment of alleles during meiosis, leading to unique combinations in each offspring.
  3. C. Inheritance of solely dominant alleles, masking the influence of recessive ones.
  4. D. Direct transfer of both parental genomes, creating identical copies of the parents.
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Question 7

What is the term for the gradual loss of topsoil due to wind or water erosion?

  1. A. Desertification
  2. B. Leaching
  3. C. Salinization
  4. D. Acidification
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Question 8

Urinary system health can be maintained through various lifestyle practices. Which of the following is NOT recommended for optimal urinary system health?

  1. A. Limiting high-sodium foods in the diet
  2. B. Consuming adequate amounts of cranberry juice
  3. C. Holding urine in the bladder for long periods
  4. D. Getting regular moderate-intensity exercise
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Question 9

Which of the following statements is correct based on anatomical terms?

  1. A. The shoulder joint is proximal to the neck.
  2. B. The elbow joint is superior to the shoulder.
  3. C. The thoracic vertebrae are superior to the cervical vertebrae.
  4. D. The thumb is on the lateral aspect of the hand.
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Question 10

What is the main function of dietary fiber in the digestive system?

  1. A. To provide energy
  2. B. To break down fats
  3. C. To promote gut bacteria growth
  4. D. To aid in absorption of nutrients
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Question 11

What information does a genotype provide that a phenotype does not?

  1. A. The genotype necessarily includes the proteins coded for by its alleles.
  2. B. The genotype will always display an organism's recessive alleles.
  3. C. The genotype must include the organism's physical characteristics.
  4. D. The genotype indicates what an organism's parents looked like.
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Question 12

What are the differences between RNA and DNA?

  1. A. Both have the same structure and function.
  2. B. RNA is single-stranded, while DNA is double-stranded.
  3. C. RNA contains ribose sugar, while DNA contains deoxyribose sugar.
  4. D. RNA has adenine and guanine, while DNA has thymine and cytosine.
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Question 13

What is the process by which decomposers break down organic matter?

  1. A. Photosynthesis
  2. B. Bioremediation
  3. C. Decomposition
  4. D. Nitrification
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Question 14

Which of the following best describes a function carried out by the circulatory system and the integumentary system working together?

  1. A. Removal of excess heat from the body
  2. B. Hormonal regulation of blood pressure
  3. C. Transport of oxygen in the body
  4. D. Production of red blood cells in the bone marrow
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Question 15

How does the structure of centromeres contribute to chromosome movement during mitosis?

  1. A. The centromere provides a binding site for spindle fibers, allowing chromosomes to be attached and manipulated.
  2. B. The centromere serves as a dividing point between sister chromatids, ensuring their separation during anaphase.
  3. C. The centromere maintains chromosome stability by preventing chromosomal breaks and rearrangements.
  4. D. The centromere plays a role in DNA replication, ensuring accurate copying of the genetic material.
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About these ATI TEAS 7 science questions

ATI TEAS 7 science practice questions, set 5 for nursing students in the United States. Fifteen items. Five include answers and rationales in American English.

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The first five questions already include the rationale. Start full practice to unlock the remaining keys, missed-question review, and the rest of the bank.

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