LongeCity - Progress in cryonics

An opportunity to test and further develop your knowledge of progress in cryonics.

--------------------
What is understood as cryopreservation?
a) preserving a structure of biological tissues at very low temperatures
b) preserving cellular structures by ice formation
c) preventing telomeres shortening at very low temperatures

--------------------
What is vitrification?
a) cooling biological tissues to extremely low temperatures
b) infusion of cryoprotective agents into biological tissues
c) solidification of a liquid into a glass

--------------------
What is the most common cold storage medium?
a) liquid nitrogen
b) liquid hydrogen
c) ethanol

--------------------
Who was the first person frozen for the purpose of cryonics in 1967?
a) Margaret Bromhall
b) James Bedford
c) Robert Ettinger

--------------------
Aldehyde-stabilized cryopreservation was shown to:
a) preserve neural synapses in pig’s and rabbit’s brains
b) destroy connectome in pig’s and rabbit’s brains
c) not be toxic to brain cells of pigs and rabbits

--------------------
What organ was frozen, revived and successfully transplanted in an animal?
a) cat’s livers
b) rabbit’s kidney
c) mouse’s heart

--------------------
How many years of radiation could frozen mouse embryos survive without damage?
a) 100 years
b) 2,000 years
c) 50,000 years

--------------------
For how many years were roundworms frozen before their revival? (recorded maximum)
a) 42.000
b) 2.000
c) 60

--------------------
The first evidence of retention of memory after cryopreservation was demonstrated in:
a) M. musculus
b) D. melanogaster
c) C. elegans

--------------------
Human embryo was stored frozen before a child birth for not more than:
a) 15 years
b) 21 years
c) 24 years

--------------------
What is the longest period frozen human sperm was stored that led to a live birth?
a) 28 years
b) 21 years
c) 40 years

--------------------
In which country are humans currently stored in cryopreservation?
a) USA & Belgium
b) USA & Russia
c) Belgium & Canada

--------------------
How cryonics companies usually preserve human bodies today?
a) use of vitrification agents and temperatures around 77 K
b) use of vitrification agents and temperatures around 12 K
c) use of liquid helium and temperatures around 3 K

--------------------
What do modern vitrification agents not contain?
a) formaldehyde
b) ethylene glycol
c) ice-blockers

--------------------
When was the first human revived after cryopreservation?
a) 2011
b) 2018
c) not yet

Read-only archive. Access follows the preserved publication rules; unavailable historical files are marked where applicable.