In humans body temperature is kept fairly constant by automatic responses controlled by which of the following? A. the hypothalamus B. heart rate C. the skin D. the amount of muscle

The body contains exactly 150 muscles. True False

What happens to E. coli when lactose is not present? a. The enzymes needed to break down lactose are continually produced. b. The genes that produce the enzymes needed to break down lactose are not expressed. c. E.

In general, more complex animals are A) more likely to rely on chemical digestion than to rely on mechanical digestion. B) more likely to perform intracellular digestion than extracellular digestion.

In addition to seeds, what is a trait unique to seed plants?

What kidneys do during dehydration?

Which choice below best shows various types of genetic material in order from simplest to most complex? a. chromosome, gene, genome b. gene, genome, chromosome c. genome, gene, chromosome d. gene, chromosome, genome?

Problems the vegetable vendors face in their job

Which statement best describes why electrons are typically not included when determining the mass of an atom? The charge of a proton cancels the charge of an electron. The protons and neutrons are much more massive than the electrons.

What did the evidence that Darwin collected during his voyage on the HMS Beagle allow him to accomplish? A. to propose the theory of artificial selection B. to propose the theory of evolution by natural selection C.

List four types of evidence used to organize organisms in systematic taxonomy