Cytochrome c is a molecule used in the electron transport chain of many organisms. Data regarding differences in the amino acid sequence of cytochrome c show that the sequence in a moth differs from a turtle by 15 about amino acids, while a moth differs from a human by about 30 amino acids. Therefore,

A) this is sufficient evidence to prove the moth is related more to the human than the turtle.
B) turtles evolved before moths.
C) there is no evolutionary relationship between moths, snakes, and humans.
D) in addition to anatomical similarities and fossil data, this provides additional evidence for determining the relatedness between these organisms.
E) biochemical information is not relevant to the evolution of organisms.

For the ancestors of land plants, supplying water to all cells of the organism would have been possible because

A) algae have vascular tissue that transports water and nutrients to all parts of the organism.
B) water would simply diffuse into the cells from the surrounding environment.
C) the circulatory system of algae evolved early in the history of life.
D) algae take water in through root-like cilia that move water into the cells.
E) algae have specialized structures called desmosomes that move water into the cells.

During the menstrual cycle, ovulation is triggered by a surge in FSH.

Describe what is known about the phylogeny of the ecdysozoans.

A gene is physically located on a(n)

A) chromosome.
B) transfer RNA.
C) enzyme.
D) protein.
E) nucleus.

Which of the following is NOT a membranous organelle?

A) ribosomes
B) mitochondria
C) Golgi apparatus
D) rough endoplasmic reticulum