Police describe a suspect as having a distorted sense of his surroundings. Which class of drugs most likely is the suspect using?

A) stimulants

B) barbiturates

C) narcotics

D) hallucinogens

Which macromolecule provides the blueprint of living things, by storing and transmitting genetic information? 1) protein 2) lipid 3) nucleic acid 4) carbohydrate

Microevolution can be said to have taken place when a. a population experiences a shift in allele frequencies. b. a feature of an individual animal changes through use or disuse. c. a mutation occurs in a population. d.

An ecosystem that is not sustainable can break down when a natural disaster occurs. This can lead to organisms in the ecosystem either leaving the area or dying off.

Which process produces reproductive cells with half the genetic material of the parent organism? A. mitosis B. meiosis C. ingestion D. digestion

If 30% of the bases in human DNA are A, (a) what percentage are C? (b) What percentage are T? (c) What percentage are

The United States uses which source of energy to produce almost 40 percent of its electricity? A. solar B. water C. biomass D. wind E. coal

Which cell breaks down carbohydrates

What characteristic distinguishes the five groups of fungi?

A research colleague has provided you with a single cell to identify. briefly describe the steps you would take to determine which domain this cell would most likely belong to.

A new organism is discovered in the forests of Costa Rica. Scientists there determine that the polypeptide sequence of hemoglobin from the new organism has 72 amino acid differences from humans, 65 differences from a gibbon, 49 differences from a