This set of Marine Biotechnology Multiple Choice Questions & Answers (MCQs) focuses on “Fish Experiments in Space”.
1. In 1948 Albert, a _____________ flew into V2 rocket into the space.
a) monkey
b) toadfish
c) snake
d) dog
View Answer
Explanation: Albert I, a rhesus macaque monkey was the first animal after fruitflies to go aboard a rocket to analyze the survival of living beings under microgravity. Albert I was followed by Albert II which travelled 154 km (bypassing the Karman line of 100 km).
2. Adult male and female medaka fish were the first vertebrates to mate in space.
a) True
b) False
View Answer
Explanation: Adult male and female medaka fish (Oryzias latipes) were the first vertebrate to successfully mate in space. The eggs obtained could successfully hatch on the ground and the life cycle was studied.
3. “Space-oriented fry” refers to ____________
a) fish mated in ISS
b) embryos produced in ISS
c) fish brought back from ISS
d) fry developed ISS
View Answer
Explanation: Space-oriented fry refers to the fry that hatched from eggs laid by fish that mated in the International Space Station (ISS). Fish are the most suitable vertebrate candidate to live their life-cycle in space.
4. Which technique can be adopted if there is an absence of mating behavior of fish in space?
a) Artificial insemination
b) Desalination
c) Enrichment
d) Parthenogenesis
View Answer
Explanation: A series of steps are checked when fish experiments are aboard or during the life cycle analysis. The first step is to check if the fish adults are mating, if there is not any happening of this, artificial insemination is used.
5. In the 1994 space mission involving medaka, all the hatched fry showed _______________
a) Looping
b) Pigmentation
c) Demineralization
d) DLR response
View Answer
Explanation: Pooling the observations by astronauts – payload crew and recorded video pictures it was confirmed that all the hatched fry showed Dorsal-light response by positioning their backs to light.
6. In space the medaka fry respond more to light than to gravity.
a) True
b) False
View Answer
Explanation: In space the medaka fry respond more to light than to gravity immediately after hatching. This response takes place when the aquarium is shown to light and the fry position their dorsal side to the light’s point source.
7. Aboard an ISS, few days after hatching the fry fish _____________
a) respond more to gravity
b) respond more to light
c) respond more to temperature
d) respond more to elevation
View Answer
Explanation: Whereas immediately after hatching the fry respond more to light, few days after hatching the fry fish respond to gravity more than the light. This phenomenon is studied using wild-type and mutant fish cell lines.
8. The increase in osteoclast activity in Medaka fish explains _______________ in astronauts.
a) loss of bone density
b) increase in bone density
c) nausea
d) dizziness
View Answer
Explanation: Astronauts often experience a loss in bone mineral density during a spaceflight. To study the underlying mechanisms and confirm this incidence, Medaka fish were examined for an increase in the osteoclast activity which corresponds to a decrease in bone density.
9. During the spaceflight, the Medaka ______________
a) did not mate
b) did not lay eggs
c) had decreased osteoclast activity
d) were motionless towards the end
View Answer
Explanation: The space experimental fish model Medaka showed normal body growth and swimming despite having low bone mineral density. Towards the end of 54-days spaceflight, they were motionless.
10. The fish uses vestibular righting response to _____________
a) figure up/ down
b) balance salt content
c) hear and see
d) maintain tempertaure
View Answer
Explanation: Fishes use two mechanisms to figure out the upward and the downward directions – the vestibular righting response and the dorsal light response. The latter phenomenon is well established but not universal.
11. Which space shuttle took the Japanese rice fish to the space?
a) Columbia space shuttle
b) Challenger space shuttle
c) Discovery space shuttle
d) Endeavour space shuttle
View Answer
Explanation: The space shuttle Columbia in 1990s with a team of Japanese scientists headed by Kenichi Ijiri took the Medaka – Japanese rice fish onboard. The aim was to see if the fish could mate in zero-gravity.
Sanfoundry Global Education & Learning Series – Marine Biotechnology.
To practice all areas of Marine Biotechnology, here is complete set of 1000+ Multiple Choice Questions and Answers.
