Sex refers to biological distinctions between males and females.

a. True

b. False

Arrange the stages of mitosis shown in the diagrams in sequential order. Use the ABCDE labels on the drawings to indicate the order

Which of the following is an example of symbiosis? a. barnacles living on a whale's skin b. a tree obtaining nutrients from the soil c. phytoplankton absorbing the sun's rays d. a blue whale feeding on zooplankton

Explain the difference between chromosomes, chromatids and chromatin. (3-4 sentences)

The breakdown products include amino acids and glucose. (a) Explain why this breakdown is necessary.

An example of a posterior trunk muscle is the

What happens first at each origin of replication?

What is one role of ATP in the light-independent reaction of photosynthesis? ATP supplies the energy to produce glucose and other carbohydrates. ATP is produced when water molecules are split and chlorophyll electrons are excited.

Canine and feline species maintain their reproductive isolation mechanisms due to the fact that the formation of a fertilized zygote is impossible. What type of isolation describes this? a. Gametic b. Mechanical c. Temporal d. Ecological

In humans, chemical digestion is accomplished by enzyme action that begins in the mouth and ends in the a. esophagus b. stomach c. small intestine d. gallbladder

Which of the following best describes computer modeling in biology?