While the human brain makes up only _____ of the bodys weight, it requires about _____ of the bodys resources when at rest.
a. .75; 8
b. 2; 15
c. 4; 25
d. 7; 30
Question 2
Why is it thought that advances such as agriculture, literacy, and urbanization have not been accompanied by additional increases in brain size?
a. The earliest Homo sapiens were as intelligent as contemporary humans.
b. Although brain size has remained constant, brain density has increased.
c. The physiological cost of a bigger brain exceeds its benefit.
d. More efficient neuronal connections account for modern human advancements.
Estimating the molecular weight of a protein. The electrophoretic mobility of a protein on an SDS po
human leukocyte on mesh fibrin
A human karyotype.
Mitotic human chromosomes in metaphase
The Addicted Brain
The Cranial Nerves as They Exit the Base of the Brain