Some cells appear to be able to live forever in a lab. However the Hayflick limit sets a cap on the number of times a cell can divide.
Biology (or Biological Science) is the study of living organisms.
Mountain goats aren’t goats, these close relatives of the goat are actually goat-antelopes. Oddly, they aren’t true antelopes either.
The exact origin of today’s dog is unclear, but studies show both dogs and wolves evolved from an extinct species of wolf of European origin that lived 30,000 years ago.
Memories aren’t stored in a single part of the brain. Memories are stored in neurons located in different parts of the brain, recalled using other parts, and connected to even more parts via synaptic pathways.
Human behavior can be random to some extent, but most behavior is based on prior input, and thus is “deterministic” (meaning not totally random).
In pop-science, in reference to the brain, you’ll hear the terms “hardwired” and “softwired”, hardwired means genetically programed and softwired means learned.
Mirror neurons are neurons that “fire” when observing an action and when performing an action, this allows for learning through imitation (“mirroring”).
Humans have more than 5 senses; we have 5 traditional senses, but over 20 senses in total with non-traditional senses counted. Other organisms have a variety of senses too.
It’s theorized that using a starting pitch of A=432 Hz and a “just intonation” tuning method (scientific tuning) is more natural and mathematically symmetric than using A=440 Hz and “equal temperament” tuning (concert tuning).
There are four general blood types (A, B, AB, and O), each can be Rh ‘+’ or ‘-‘. Blood types differ by antigens on the surface of red blood cells.