ASVAB Study GuideGeneral Science Practice Test 4
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
In the scientific binomial nomenclature name Canis lupus, what does the second word (lupus) represent?
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Correct answer: C — species
In binomial nomenclature, the first word designates the genus, while the second word specifies the exact species within that genus.
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Question 2 easy
By what primary cellular process do most somatic eukaryotic cells divide to produce two identical daughter cells?
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Correct answer: B — mitosis
Mitosis is the standard process of cell division for somatic cells, resulting in two genetically identical daughter cells with the same number of chromosomes.
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Question 3 easy
Which biological kingdom encompasses heterotrophic organisms with chitin cell walls, including mushrooms, molds, and yeasts?
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Correct answer: C — Fungi
The kingdom Fungi includes eukaryotic organisms that absorb nutrients from organic matter and possess cell walls made of chitin rather than cellulose.
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Question 4 medium
Which of the following is NOT a primary physiological function of the human skeletal system?
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Correct answer: D — conduct electrical nerve impulses
Conducting nerve impulses is the specialized function of the nervous system (neurons), whereas the skeletal system supports the body, protects organs, and produces blood cells.
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Question 5 medium
To which taxonomic class do lions (Panthera leo) belong, characterized by having hair or fur and mammary glands?
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Correct answer: C — Mammalia
Mammalia (mammals) is the vertebrate class characterized by the presence of mammary glands, hair or fur, and three middle ear bones.
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Question 6 medium
What are the tiny, delicate air sacs where pulmonary gas exchange of oxygen and carbon dioxide takes place called?
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Correct answer: B — alveoli
Alveoli are millions of microscopic, thin-walled air sacs in the lungs where oxygen diffuses into the pulmonary capillaries and carbon dioxide diffuses out.
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Question 7 medium
In the hierarchical classification system of living organisms, which major taxonomic rank sits immediately below the domain level?
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Correct answer: D — kingdom
In modern biological taxonomy (such as the three-domain system), domains (Bacteria, Archaea, Eukarya) are subdivided directly into kingdoms (e.g., Animalia, Plantae, Fungi).
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Question 8 hard
At what specific anatomical site and initial physiological mechanism does human digestion officially commence?
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Correct answer: C — The digestive process begins in the oral cavity through salivary amylase and mastication.
Digestion starts in the mouth (oral cavity) where teeth mechanically break down food (mastication) and salivary enzymes (like amylase) begin chemical carbohydrate breakdown.
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Question 9 hard
Which primary macronutrient classes serve as the body's chief metabolic fuel sources for generating cellular ATP energy?
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Correct answer: B — carbohydrates and fats
Carbohydrates provide immediate glucose fuel for cellular respiration, while triglycerides (fats) serve as dense, long-term energy storage reserves in adipose tissue.
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Question 10 hard
Which structural and biochemical trait distinguishes members of the Plantae kingdom from other eukaryotic kingdoms?
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Correct answer: B — presence of rigid cell walls composed primarily of cellulose
Plant cells are uniquely characterized by rigid extracellular cell walls made of cellulose, alongside chloroplasts for photosynthesis and large central vacuoles.