Bio Lecture 21

Front 1

West Nile fever and Japanese encephalitis are examples of diseases caused by _______.

Back 1

arboviruses

Front 2

An average human brain weighs _____

Back 2

3 pounds

Front 3

Even though the brain makes up only ___ percent of the body weight, it uses _____ percent of the body’s energy supply

Back 3

2, 20

Front 4

Research has demonstrated that the __________ is the processing center in the brain for short-term memory

Back 4

hippocampus

Front 5

Nerve cells are operated by a combination of electrical currents and ___________ transmitters.

Back 5

chemical

Front 6

Axons release _________ across the cleft of synapses, after receiving electrical signals from nerves.

Back 6

neurotransmitters

Front 7

These basic functions of nerves have remained essentially unchanged for ________ million years.

Back 7

500

Front 8

During most of their adult life, __________ workers perform many duties in the hives, however, in the last two weeks of their life, all individuals transform into foragers.

Back 8

honey bee

Front 9

________ are small mammals of the mongoose family, and are highly social animals, forming groups as large as 40 individuals.

Back 9

Meerkats

Front 10

Humans live in a ____________ society that has frequent changes in alliances, both between individuals and between groups

Back 10

fission-fusion

Front 11

In humans, _______ is a powerful way to attract a mating partner through the demonstration of intelligence, wit, and eloquence.

Back 11

language

Front 12

A brain’s complexity results mainly from the types and numbers of _________ that each nerve cell has with other nerve cells.

Back 12

connections