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 431
People who remain at high altitude commonly develop an increased number of:
Red blood cells
Platelets only
Bone cells
Adipocytes
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Correct answer: A
Red blood cells
Lower oxygen availability stimulates erythropoietin and increases red-cell production.
Biology · Question 432
In which year was Dolly the sheep, the first mammal cloned from an adult somatic cell, born?
1986
1996
2006
2016
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Correct answer: B
1996
Dolly was born in 1996 and her creation was announced in 1997.
Biology · Question 433
Who introduced the first successful smallpox vaccination in 1796?
Edward Jenner
Alexander Fleming
Robert Koch
Joseph Lister
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Correct answer: A
Edward Jenner
Edward Jenner demonstrated vaccination against smallpox in 1796.
Biology · Question 434
Hydrophilic channels or pores through cell membranes are commonly formed by:
Channel proteins
Triglycerides
Glycogen granules
DNA helices
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Correct answer: A
Channel proteins
Channel proteins span the membrane and provide selective hydrophilic pathways.
Biology · Question 435
Why does Nostoc lack mitochondria?
It is a prokaryotic cyanobacterium
It is an animal cell
It has no genetic material
It performs no respiration
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Correct answer: A
It is a prokaryotic cyanobacterium
Nostoc is a cyanobacterium, and prokaryotic cells lack membrane-bound mitochondria.
Biology · Question 436
Chromosomes usually reach their maximum condensation during:
Interphase
Prophase I only
Metaphase
Cytokinesis
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Correct answer: C
Metaphase
Mitotic chromosomes are maximally condensed and easiest to distinguish at metaphase.
Biology · Question 437
A monosaccharide name ending in -ulose, such as fructose, usually indicates a:
Ketose sugar
Amino sugar only
Fatty acid
Nucleotide
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Correct answer: A
Ketose sugar
The suffix -ulose is commonly used for ketose sugars.
Biology · Question 438
The vegetative hyphae of Rhizopus are generally:
Aseptate and coenocytic
Septate with one nucleus per cell
Made of cellulose vessels
Photosynthetic
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Correct answer: A
Aseptate and coenocytic
Rhizopus has broad aseptate, multinucleate hyphae described as coenocytic.
Biology · Question 439
The genome of a bacteriophage consists of:
Either DNA or RNA, depending on the phage
Both DNA and RNA in every phage
Protein only
Lipids only
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Correct answer: A
Either DNA or RNA, depending on the phage
Individual bacteriophages possess a DNA genome or an RNA genome, not both as their genetic material.
Biology · Question 440
Which organism commonly serves as an intermediate host for the sheep liver fluke Fasciola hepatica?
Freshwater snail
Mosquito
Housefly
Earthworm
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Correct answer: A
Freshwater snail
The liver fluke develops through larval stages in a suitable freshwater snail.