Which lipid acts as a chemical messenger?

a. adipose tissue

b. cholesterol

c. testosterone

d. beeswax

Mental health disorders are not really diseases. true or false

Why do most biologists believe that true commensalism does not exist? the relationships are probably mutual or parasitic animals of the same species rarely compete with one another animals of different species usually do not like to work together an

In which direction does the Sun appear to move across the sky? A. from west to east B. from east to west C. from north to south D. from south to north

What were the first organisms to release oxygen into the atmosphere? plants animals anaerobic photoautotrophs cyanobacteria

Although dams serve many important purposes, they can also have a negative impact on the environment by

How would homeostasis be affected if the endocrine system did not release the proper amount of hormones?

A mass located in the cytoplasm of a cell, separated from the cytoplasm by a nuclear membrane; considered the control center of the cell. A. mitochondria B. nucleolus C. pinocytic vesicle D. nucleus

Diferencias y semejanzas entre una serpiente y una mosca

What equation is used to determine the gene frequency for a given gene in a population?

What are the two stages of protein synthesis and in which stage are proteins actually synthesized?