What are the four types of biomolecules?

Cancer chemotherapy can damage the epithelial cells that line the digestive tract. True or False

Which of the following tropisms occurs when a plant responds to light? a. gravitropism c. thigmotropism b. phototropism d. none of the above

Why do scientists refer to Charles Darwin's ideas about evolution as the theory of evolution? After numerous hypotheses were developed by Charles Darwin, they were collected together into a theory.

A series of events by which life comes back to an area is called

What would most likely happen to a person who is not getting enough essential amino acids in his or her diet? The body would synthesize the amino acids. Muscle tissue would break down to supply amino acids. Protein synthesis would increase.

M& m's famous slogan, "melts in your mouth, not in your hand," is an example of a (n) :

What problem is most directly caused by burning waste? A. Groundwater pollution B. Air pollution C. Lake pollution D. Ocean pollution

How are currents in the Pacific Ocean affected by El Niño? Currents travel more slowly. Rip currents are frequently formed. All currents become deep ocean currents. Warm water moves to the east instead of to the west.

Which statement accurately describes Darwin's experience on the Beagle? A. He had a eureka moment and understood how species evolve. B. He recognized the significance of each species he observed. C.

How are hydrogen bonds different from covalent bonds? A) The atoms in hydrogen bonds have valence electrons B) The compounds that result from hydrogen bonds contains carbon C) Covalent bonds are organic D) Hydrogen bonds are weaker than covalent