What is the one difference between the head and tails of a phospholipid in the cell membrane? The head is repelled by water and the tails are attracted to water.

The head transports waste material and the tails transport ions.

The head transports ions and the tails transport waste material.

The head is attracted to water and the tails are repelled by water.

Which of the following best describes homeostasis? a. keeping the internal environment in a stable state b. keeping the external environment in a stable state c. beneficial characteristics resulting from mutation d. reproduction that results in offspring identical to the parent.

Which of the following is an oxidation-reduction reaction? (pictured below)

Plz genetic engineering can be applied to many fields including medicine and agriculture. which of the following is a medical application of genetic engineering? a. giving crop plants recombinant dna so that they would be resistant to herbicides. b. examining a persons pedigree to determine whether they can carry a gene for a genetic disease. c. analyzing a persons dna to see how closely they are related to another person. d. certain genes into bacteria so that they will produce a needed medicine.