What causes a drop in female hormone levels? A: The onset of the menstrual flow. B: If an egg is released from the ovary. C: if the uterine wall thickens. D: if the egg is not fertilized.

Gene mutations in a cell can result in uncontrolled cell division. What disease results when this occurs? A. cancer B. pneumonia C. asthma D. AIDS

What is intramembranous ossification? what is intramembranous ossification? the formation of bone from preexisting fibrocartilage models the formation of bone from fibrous membranes the formation of bone from preexisting hyaline cartilage models the

The most significant difference between a paracrine and an autocrine is

How is light an external stimulus for plants

A few bacteria are placed in a nutrient solution. after several hours thousands of bacteria are present. which life activities are primarily responsible for this?

What is the function of a gene?

Explain the anthropogenic (man-made) impact on the Carbon Cycle.

Species are subdivided into smaller groups called subspecies. For people, the human species is subdivided into smaller groups called a. ethnic groups b. species c. breeding populations d. races e. all of the above

A frameshift mutation could result fromA) a base insertion only. B) a base deletion only. C) a base substitution only. D) deletion of three consecutive bases. E) either an insertion or a deletion of a base.

The first step a biologist takes when deciding how to study life is to