ASVAB Study GuideGeneral Science Practice Test 2
Tap an answer to check it instantly and read the explanation. 10 questions: 3 easy, 4 medium and 3 hard.
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Question 1 easy
The mitochondria is often referred to as the
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Correct answer: A — powerhouse of the cell.
Mitochondria are known as the powerhouse of the cell because they generate most of the chemical energy (ATP) needed to power biochemical reactions.
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Question 2 easy
Carbohydrates come from all the following sources except
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Correct answer: C — pure chicken breast.
Pure chicken breast is primarily a source of protein and contains virtually no carbohydrates. Bread, pasta, and rice are rich in carbohydrates.
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Question 3 easy
The alveoli are part of which human body system?
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Correct answer: A — respiratory
Alveoli are tiny air sacs located at the end of the bronchioles in the lungs, where the exchange of oxygen and carbon dioxide takes place, making them part of the respiratory system.
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Question 4 medium
The pascal (Pa) is the standard International System of Units (SI) unit of
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Correct answer: B — pressure.
The pascal is the SI unit of pressure, defined as one newton per square meter. Energy is measured in joules, power in watts, and frequency in hertz.
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Question 5 medium
In the scientific method, which of the following best describes the role of a hypothesis?
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Correct answer: C — A proposed explanation for a phenomenon that can be tested through experimentation.
A hypothesis is an educated, testable prediction or proposed explanation for a specific phenomenon that serves as the foundation for experimental design.
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Question 6 medium
Which of the following joints allows for rotational movement in multiple axes, such as the shoulder and hip?
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Correct answer: B — Ball-and-socket joint
A ball-and-socket joint allows for multi-axial movement and rotation (flexion, extension, abduction, adduction, and rotation), found in the shoulder and hip. A hinge joint only permits movement in one plane (e.g., elbow).
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Question 7 medium
During which process do sex cells (gametes) reduce their chromosome number by half to produce haploid cells?
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Correct answer: B — Meiosis
Meiosis is a specialized type of cell division that reduces the chromosome number by half, resulting in four haploid gametes (sperm or egg cells), essential for sexual reproduction.
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Question 8 hard
Which specific type of primary animal tissue lines body surfaces, cavities, and forms glands responsible for secretion and absorption?
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Correct answer: C — Epithelial tissue
Epithelial tissue covers external body surfaces, lines internal cavities and organs, and forms glandular tissue. It is specialized for protection, absorption, filtration, and secretion.
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Question 9 hard
Which specific component of the adaptive immune system is primarily responsible for cell-mediated immunity by destroying infected host cells?
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Correct answer: A — Cytotoxic T lymphocytes (T cells)
Cytotoxic T cells (CD8+ T cells) are core components of cell-mediated adaptive immunity that directly recognize and induce apoptosis in virus-infected or cancerous host cells.
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Question 10 hard
Which accessory organ of the digestive system produces bile, which is essential for the emulsification and breakdown of dietary fats?
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Correct answer: C — Liver
The liver synthesizes and secretes bile, which breaks down large fat globules into smaller micelles (emulsification). Note that while the gallbladder stores and concentrates bile, the liver is the organ that actually produces it.