Prepare for Army AFNS and civilian nursing admissions in one place. Choose a pathway or browse all questions. Each pathway includes common preparation. These are original practice questions, not verified official past papers.
Biology · Question 401
Populations of different species living and interacting in the same area form a:
Species
Community
Organism
Biome only
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Correct answer: B
Community
An ecological community consists of interacting populations of different species.
Biology · Question 402
A group of similar organisms capable of interbreeding and producing fertile offspring is a:
Family
Population
Species
Kingdom
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Correct answer: C
Species
The biological species concept groups organisms that can interbreed and produce fertile offspring.
Biology · Question 403
Members of one species living in the same area at the same time form a:
Population
Community
Ecosystem
Phylum
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Correct answer: A
Population
A population contains members of the same species in a defined place and time.
Biology · Question 404
Several tissue types working together form a:
Cell
Organelle
Organ
Population
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Correct answer: C
Organ
An organ contains multiple tissues coordinated for particular functions.
Biology · Question 405
A group of similar cells performing a common function is called a:
Tissue
System
Community
Molecule
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Correct answer: A
Tissue
A tissue is an organised group of similar cells and their extracellular material.
Biology · Question 406
A tentative, testable explanation for an observation is called a:
Scientific law
Hypothesis
Control group
Conclusion
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Correct answer: B
Hypothesis
A hypothesis is a proposed explanation that can be tested using evidence.
Biology · Question 407
Amoeba moves and captures food with temporary cytoplasmic extensions called:
Cilia
Flagella
Pseudopodia
Pili
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Correct answer: C
Pseudopodia
Pseudopodia are temporary extensions used by amoebae for movement and feeding.
Biology · Question 408
What is the scientific name of modern humans?
Homo erectus
Homo sapiens
Pan troglodytes
Australopithecus afarensis
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Correct answer: B
Homo sapiens
Modern humans belong to the species Homo sapiens.
Biology · Question 409
A lactometer is used principally to measure the relative density of:
Blood
Milk
Urine
Seawater
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Correct answer: B
Milk
A lactometer is a hydrometer calibrated for testing milk density.
Biology · Question 410
An enzyme is best described as a:
Biological catalyst
Structural lipid
Storage polysaccharide
Genetic chromosome
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Correct answer: A
Biological catalyst
An enzyme accelerates a biochemical reaction without being consumed by it.