Questions & Answers
Browse all 18 questions from the
Astrobiology and Extraterrestrial Biology study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which resilient microscopic animal is the only known species capable of surviving the vacuum of outer space and exposure to extreme solar radiation?
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A
Tardigrada
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B
Rotifera
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C
Dermestidae
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D
Nematoda
2
What is the primary physiological challenge faced by vertebrate animals during long-term exposure to microgravity in orbit?
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A
Increased metabolic rate
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B
Loss of bone mineral density
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C
Rapid increase in lung capacity
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D
Hyper-pigmentation of skin
3
Which organism was the first animal to be sent into orbit around the Earth aboard the Sputnik 2 mission?
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A
A rhesus macaque
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B
A fruit fly
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C
A stray dog named Laika
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D
A laboratory mouse
4
Tardigrades have been studied for their ability to enter a state of suspended animation, which is known as what?
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A
Hibernation
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B
Cryptobiosis
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C
Aestivation
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D
Diapause
5
What is the main biological concern regarding the 'panspermia' hypothesis in the context of extraterrestrial life?
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A
The survival of organisms during atmospheric entry
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B
The evolution of multicellularity
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C
The necessity of a silicon-based metabolism
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D
The lack of liquid water on Mars
6
Which protein complex, often found in animals, is being researched for its role in DNA repair after exposure to cosmic radiation?
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A
Hemoglobin
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B
Dsup
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C
Keratin
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D
Myosin
7
In 1973, which species of spiders were sent to Skylab to observe the construction of webs in a microgravity environment?
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A
Black widow spiders
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B
Araneus diadematus
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C
Wolf spiders
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D
Tarantulas
8
What are the 'extremophile' animals that live in environments with high salinity or acidity often used as analogs for in the search for life on moons like Europa?
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A
Halophiles
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B
Xerophiles
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C
Cryophiles
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D
Barophiles
9
Which of the following animals was successfully bred and gave birth to offspring aboard the Space Shuttle Discovery in 1998?
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A
Rattus norvegicus
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B
Mus musculus
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C
Danio rerio
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D
Xenopus laevis
10
The study of how the circulatory system of a giraffe might provide insights into blood pressure management in space is known as what type of research?
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A
Comparative physiology
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B
Xenobiology
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C
Astrogeology
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D
Planetary physics
11
Which chemical element is considered the most probable basis for extraterrestrial biological life, given its tetravalent bonding capabilities?
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A
Silicon
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B
Carbon
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C
Nitrogen
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D
Phosphorus
12
Which sensory system in animals is most significantly affected by the absence of a gravity vector in outer space?
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A
Visual perception
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B
Vestibular system
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C
Olfactory bulb
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D
Somatosensory cortex
13
The 'Habitable Zone' around a star is defined primarily by the capacity for what specific condition to exist?
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A
Liquid water on a planetary surface
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B
A high concentration of atmospheric oxygen
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C
A stable magnetic field
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D
The presence of complex organic molecules
14
What specific type of radiation found in space is most damaging to the genetic material of living organisms?
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A
Infrared radiation
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B
Galactic cosmic rays
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C
Radio waves
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D
Visible light
15
Which jellyfish species was sent to space in 1991 to study the impact of microgravity on the development of the vestibular system in offspring?
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A
Aurelia aurita
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B
Cyanea capillata
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C
Chrysaora quinquecirrha
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D
Rhizostoma pulmo
16
What effect does microgravity typically have on the immune system function of animals in space?
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A
It becomes hyper-active
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B
It experiences dysregulation and reduced response
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C
It remains completely unchanged
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D
It produces higher levels of red blood cells
17
In the context of space biology, what is the 'biosignature' most frequently sought in the atmospheres of exoplanets?
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A
Atmospheric methane
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B
High surface gravity
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C
Metallic deposits
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D
Volcanic activity
18
Which microscopic crustacean was the first animal to be observed mating and producing offspring in space?
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A
Daphnia magna
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B
Artemia salina
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C
Copepoda
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D
Ostracoda
