Until the ___, scientists thought organic chemicals could only form by actions of living things.

A.) Twenty-first century

B.) 1980's

C.) mid-1800's

D.) none of the above

Explain two ways object can become electrically charged (not examples)

Full color (D) in domestic cats is dominant over dilute color (d). Out of 325 cats observed, 194 have full color and 131 have dilute color.

You are telling your friend about what you've learned about organic molecules. you told her that organic molecules are all made up of carbon backbones with hydrogens.

The sympathetic and parasympathetic divisions of the ans have the same effect on most body organ systems. a. True b. False

What dictates the structure of a protein molecule synthesized by the body? the body's need for a protein the dna inside the nucleus of the cell the number of essential amino acids available the combination of proteins consumed in the diet?

Where are the sensory receptors for sound? the tongue the nose the ears the eyes

Which is a characteristic of the littoral zone of lake erie?

In a small, isolated population of piranhas, one individual is born with a synonymous mutation in a gene that codes for the beta-globin protein found in hemoglobin. After five generations, 5% of the piranhas carry this mutation.

What is dna in biology

Amino acids with hydrophobic r groups are most often found buried in the interior of folded proteins. True or False.