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 type of tissue is found in the outermost layer of skin?
A. Muscle tissue
B. Connective tissue
C. Epithelial tissue
D. Nervous tissue
Show answer and rationale
Correct answer: C — Epithelial tissue
The correct answer is C: Epithelial tissue. Epithelial tissue forms the outermost layer of the skin, providing protection against external factors. It serves as a barrier and helps in preventing water loss and entry of pathogens into the body. Choice A, Muscle tissue, is incorrect as muscle tissue is responsible for movement, not skin structure. Choice B, Connective tissue, is incorrect as it provides support and structure to the body but is not the main component of the outermost layer of the skin. Choice D, Nervous tissue, is incorrect as nervous tissue is responsible for transmitting signals within the body, not for the outermost layer of the skin.
Question 2
What happens to the frequency of a wave when its wavelength is doubled, assuming the speed remains constant?
A. Frequency remains the same.
B. Frequency is halved.
C. Frequency is doubled.
D. Frequency information is insufficient to determine.
Show answer and rationale
Correct answer: B — Frequency is halved.
When the wavelength of a wave is doubled, and the speed of the wave remains constant, the frequency of the wave is halved. This relationship is governed by the equation speed = frequency x wavelength. Therefore, if the wavelength is doubled while the speed remains constant, the frequency must be halved to maintain a constant speed. Choice A is incorrect because frequency and wavelength are inversely proportional when speed is constant. Choice C is incorrect as doubling the wavelength does not result in a doubled frequency. Choice D is incorrect as the relationship between frequency, wavelength, and speed can be determined using the given information.
Question 3
What is correct about the hormones that stimulate male and female organs to produce male and female sex hormones?
A. Female organs are stimulated by female hormones and male organs by male hormones.
B. The same hormones that produce male or female sex characteristics stimulate the organs.
C. The same hormones stimulate both male and female organs to produce sex hormones.
D. The hypothalamus stimulates the pituitary gland's secretion of male and female hormones.
Show answer and rationale
Correct answer: C — The same hormones stimulate both male and female organs to produce sex hormones.
The correct answer is C. The same hormones stimulate both male and female organs to produce sex hormones. Hormones such as luteinizing hormone (LH) and follicle-stimulating hormone (FSH) are produced by the pituitary gland and act on the ovaries in females and the testes in males to stimulate the production of sex hormones (estrogen and progesterone in females, testosterone in males). Therefore, the same hormones stimulate both male and female organs to produce sex hormones. Choices A, B, and D are incorrect because they do not accurately describe the relationship between hormones and the stimulation of male and female organs to produce sex hormones.
Question 4
Which of the following is NOT a major division of the nervous system?
A. Peripheral nervous system
B. Central nervous system
C. Somatic nervous system
D. Autonomic nervous system
Show answer and rationale
Correct answer: C — Somatic nervous system
The correct answer is C: Somatic nervous system. The major divisions of the nervous system are the central nervous system, which includes the brain and spinal cord, and the peripheral nervous system, which includes all the nerves outside of the central nervous system. The somatic nervous system, which controls voluntary movements and reflexes, is a part of the peripheral nervous system. The autonomic nervous system is another subdivision of the peripheral nervous system that regulates involuntary functions like heart rate and digestion. Therefore, the somatic nervous system is not a major division of the nervous system, making it the correct answer.
Question 5
What is the process of converting simple sugars into complex carbohydrates called?
A. Glycolysis
B. Gluconeogenesis
C. Krebs cycle
D. Oxidative phosphorylation
Show answer and rationale
Correct answer: B — Gluconeogenesis
Gluconeogenesis is the correct answer. It is the process of synthesizing glucose from non-carbohydrate sources, such as amino acids or glycerol. A) Glycolysis is the process of breaking down glucose into pyruvate to produce energy. C) The Krebs cycle, also known as the citric acid cycle, generates energy through the oxidation of acetyl-CoA derived from carbohydrates, fats, and proteins. D) Oxidative phosphorylation is the final stage of cellular respiration where ATP is produced using energy derived from the electron transport chain. Therefore, choices A, C, and D are not the processes involved in converting simple sugars into complex carbohydrates.
Keep going past these 15 questions
Missed-question review, longer banks, and the rest of 20,000+ nursing practice questions open when you start studying.
Stems and choices stay public so you can still reason. Correct answers and full rationales unlock with the rest of the bank.
Question 6
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:
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.
In the suburban neighborhood of Northwoods, there has been a large population of deer, and residents have complained about them eating flowers and garden plants. What would be a logical explanation for the large increase in the deer population over the last two seasons?
A. There has been an increase in the quantity of food sources in surrounding areas.
B. The population of natural predators in Northwoods has decreased.
C. Deer have migrated from surrounding areas.
D. There has been a recent increase in hunting licenses sold.
Correct answer:
The correct answer is B because a decrease in natural predators can lead to an increase in the deer population as there are fewer predators to control their numbers. This explanation aligns with the situation described in the question, where the deer population has increased, causing issues for residents. Choice A is incorrect because an increase in food sources would not directly explain the increase in the deer population. Choice C is incorrect as it introduces a new factor of migration which is not mentioned in the question. Choice D is incorrect as an increase in hunting licenses sold would likely have the opposite effect on the deer population.
What enzymes do lysosomes contain, leading to their nickname as the cell's 'suicide bags'?
A. Hydrolytic enzymes
B. Ligases (bonding enzymes)
C. Transferases (molecule transfer)
D. Oxidoreductases (redox reactions)
Correct answer:
Lysosomes are organelles filled with hydrolytic enzymes that break down proteins, nucleic acids, lipids, and carbohydrates. These enzymes aid in digesting cellular waste and foreign substances, hence the term 'suicide bags' due to their involvement in cell degradation and recycling. Ligases are enzymes that catalyze the joining of two large molecules by forming a new chemical bond, not present in lysosomes. Transferases are enzymes that catalyze the transfer of functional groups from one molecule to another, not found in lysosomes. Oxidoreductases are enzymes involved in oxidation-reduction reactions, which are not the primary function of lysosomes.
The number of protons in an atom is determined by its:
A. Atomic mass
B. Electron configuration
C. Chemical properties
D. Atomic number
Correct answer:
The number of protons in an atom is determined by its atomic number. The atomic number represents the number of protons in the nucleus of an atom, which also determines the element's identity. Therefore, the correct answer is (D) Atomic number. Choices (A) Atomic mass, (B) Electron configuration, and (C) Chemical properties are not directly related to the number of protons in an atom. Atomic mass is the total mass of protons, neutrons, and electrons in an atom. Electron configuration refers to the arrangement of electrons in an atom's energy levels, and chemical properties are determined by the arrangement of electrons in the outermost energy level.
What determines the defining characteristic of an element?
A. Neutrons in its nucleus
B. Electrons surrounding the nucleus
C. Protons in its nucleus
D. All of the above
Correct answer:
The defining characteristic of an element is determined by the number of protons in its nucleus, which is referred to as the atomic number. The number of protons uniquely identifies an element. The correct answer is choice C because the number of protons in the nucleus of an atom defines its elemental identity, as different elements have a unique number of protons. Neutrons and electrons do play essential roles in the atom, but they do not determine the defining characteristic of an element. Neutrons contribute to the stability of the nucleus and isotopes of an element, while electrons are involved in chemical bonding and the reactivity of an atom.
What is the term for the mixture of reactants and products present during a chemical reaction?
A. Solution
B. Mixture
C. Reaction mixture
D. Precipitate
Correct answer:
The term 'reaction mixture' is used to describe the combination of both reactants and products that exist simultaneously during a chemical reaction. It encompasses not only the initial substances (reactants) but also the resulting compounds (products) formed throughout the reaction process. Choice A, 'Solution,' typically refers to a homogenous mixture where one substance is dissolved in another. Choice B, 'Mixture,' is a general term that does not specifically indicate the mix of reactants and products in a chemical reaction. Choice D, 'Precipitate,' specifically refers to the solid formed when two solutions react and a solid compound is produced.
What is the scientific term for inflammation of the bronchi, often associated with a cough and mucus production?
A. Pneumonia
B. Bronchitis
C. Emphysema
D. Pleurisy
Correct answer:
Bronchitis is the correct answer. It is the inflammation of the bronchi, which are the air passages in the lungs. Bronchitis typically presents with symptoms such as a persistent cough, mucus production, and sometimes difficulty breathing. Pneumonia, on the other hand, is an infection that causes inflammation in the air sacs of the lungs, not specifically the bronchi. Emphysema is a chronic lung condition characterized by the gradual destruction of the air sacs in the lungs, resulting in breathing difficulties. Pleurisy refers to inflammation of the pleura, the lining around the lungs and chest cavity, causing chest pain when breathing or coughing.
Which of the following organs is responsible for the mechanical breakdown of food into smaller pieces?
A. Esophagus
B. Stomach
C. Small intestine
D. Mouth
Correct answer:
The correct answer is D: Mouth. The mouth is responsible for the mechanical breakdown of food through chewing and mixing with saliva. This process is essential for breaking down food into smaller, more digestible pieces before swallowing. The esophagus (choice A) is a muscular tube that transports food from the mouth to the stomach and does not participate in the mechanical breakdown of food. The stomach (choice B) primarily functions to further break down food using acids and enzymes, rather than mechanical means. The small intestine (choice C) is responsible for absorbing nutrients from the digested food, not for the mechanical breakdown of food.
What is the purpose of sodium bicarbonate when released into the lumen of the small intestine?
A. It works to chemically digest fats in the chyme.
B. It decreases the pH of the chyme to prevent harm to the intestine.
C. It works to chemically digest proteins in the chyme.
D. It increases the pH of the chyme to prevent harm to the intestine.
Correct answer:
Sodium bicarbonate, when released into the lumen of the small intestine, functions to increase the pH of the acidic chyme coming from the stomach. This increase in pH helps neutralize the acidity of the chyme, creating a more optimal environment for the digestive enzymes in the small intestine to function properly. Maintaining a slightly basic pH in the small intestine is crucial for overall digestion and absorption of nutrients. Choices A, B, and C are incorrect. Sodium bicarbonate does not chemically digest fats or proteins in the chyme, and it does not decrease the pH of the chyme as it actually increases the pH to prevent harm to the intestine.
If a biochemist isolates a large amount of pyruvate, which part of the cell is he working with?
A. Chloroplasts
B. Cytoplasm
C. Mitochondria
D. Nucleus
Correct answer:
The correct answer is B: Cytoplasm. Pyruvate is a product of glycolysis, a metabolic pathway that takes place in the cytoplasm of the cell. Therefore, a biochemist isolating a large amount of pyruvate would be working with the cytoplasm of the cell. Choice A, Chloroplasts, is incorrect because pyruvate is not produced in chloroplasts, which are responsible for photosynthesis. Choice C, Mitochondria, is incorrect as pyruvate is produced in the cytoplasm before entering the mitochondria for further metabolism. Choice D, Nucleus, is incorrect as the nucleus is not involved in the production or isolation of pyruvate, which is a metabolic intermediate.
ATI TEAS 7 science practice questions, set 57 for nursing students in the United States. Fifteen items. Five include answers and rationales in American English.
No. Nursier is independent practice. Register through the official path named on the ATI TEAS 7 exam guide.
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.
Keep going past these 15 questions
Missed-question review, longer banks, and the rest of 20,000+ nursing practice questions open when you start studying.
