Quotes About Biology

When the eyes of a woman that a man finds attractive look directly at him, his brain secretes the pleasure-inducing chemical dopamine - but not when she looks elsewhere.

People born in the fall and winter are more likely to be larks;

Each of us has a "chronotype"—a personal pattern of circadian rhythms that influences our physiology and psychology.

Internal Time: Chronotypes, Social Jet Lag, and Why You're So Tired (2012) By Till Roenneberg If you're going to read one book about chronobiology, make it this one. You'll learn more from this smart, concise work—organized into twenty-four chapters to represent the twenty-four hours of the day—than from any other single source.

It's all just chemicals.

On average, humans have one testicle

It is difficult to appreciate the complexity of the brain because the numbers are so huge. The average brain consists of 100 billion neurons.

Early experience shapes the structure and function of the brain. This reveals the fundamental way in which gene expression is determined by experience.

while the downstairs brain is well developed even at birth, the upstairs brain isn't fully mature until a person reaches his mid-twenties.

The rate of brain maturation is largely influenced by the genes we inherit.

For example, research has shown that the more present we are in life, the higher the level of the enzyme telomerase in our bodies, which maintains and repairs the life-preserving ends of our chromosomes, called telomere caps.

It is unhelpful to pit these interdependent processes against each other in simplistic debates such as experience versus biology, or nature versus nurture. In fact, experience shapes brain structure. Experience is biology.

familiar knowns of fighting, fleeing, freezing, and even fainting,

La amígdala, que tiene forma de almendra, desempeña un papel importante en la respuesta de miedo.

The nervous system consumes more glucose than most other parts of the body, and effortful mental activity appears to be especially expensive in the currency of glucose.

There is more and more data indicating that there is a biological basis to your political views.

Five hours a week of vigorous aerobic exercise can lower estrogen and progesterone exposure by about 20 per cent.

For humans and animals alike, truly vigorous, wholehearted, spontaneous play is something of a biological frill.

By all measures men are the more violent gender.

We really are creatures of a violent world, biologically speaking - watching violence and learning about it is one of our cognitive drives.

Different viral species contain nucleic acids that differ not only in length and nucleotide sequence but in many unexpected ways as well.

The idea of the live-virus vaccine is to produce in a continuous way some viral antigens.

Enzymes are masters of chemistry. They evolved over billions of years to perform specific biological functions. They make complex materials with virtually no waste.

We know virtually all of the genes known to mammals. We do not know all of the combinations.