Darwin concluded that organisms on the Galápagos Islands a. had changed over time. b. had remained the same. c. were the result of selective breeding. d. had no variations.

Mitosis is the part of eukaryotic cell division in which the nucleus divides and distributes the chromosomes to the two daughter nuclei, ensuring that each daughter cell receives chromosomes identical to those of the parent cell.

What term best defines the process that occurs when nuclei combine to produce a nucleus with more mass? a. fusion b. fission c. anti-synthesis d. atomic recombination

Cardiac muscles are considered smooth muscles. true or false

Three populations of crickets look very similar, but the males have courtship songs that sound different. What function would this difference in song likely serve if the populations came in contact? A) a temporal reproductive isolating mechanism.

Suppose you made the observation that bees seem to prefer a yellow flower that produces abundant amounts of pollen and nectar over a purple flower that produces less pollen and nectar.

The allele for cystic fibrosis is recessive. What does this mean?

Which of the following statements is true? The Milky Way Galaxy is the only galaxy in the universe. The earth is always the same distance away from the sun. Bode's law correctly predicted the location of Neptune.

In most medical procedures, hazardous waste is produced. This waste is usually burned, which can release chemicals like mercury into the air. How could technology be best used to solve this problem?

Primitive anaerobic prokaryotic cells did not contain which of the following? A) mitochondria B) DNA C) cell membranes D) RNA

Which of the following is most important in forming ATP? A. sulfur B. helium C. phosphorus D. boron