Which statement best describes scientific theories?

A.) it is an educated guess that requires no testing

B.) it is supported by many different experiments

C.) it is true and can never be changed

D.) it is considered false until proven true

Which of the following plants would you expect to find nearest to water?

What is likely to happen to a healthy population that is experiencing exponential growth? a. It will eventually reach its carrying capacity. b. It will experience a population crash. c. It will go extinct in the near future. d.

What causes hemoglobin to unload more oxygen to metabolically active tissues such as skeletal muscles during exercise?

Are members of coniferophyta vascular or avascular?

What is an example of a stimulus and a response that humans exhibit? Can a similar behavior be seen in any other organisms?

1pt Blood is made up of A. nutrients, minerals, fats, and proteins B. oxygen, carbon dioxide, and sugar C. plasma, red blood cells, white blood cells, and platelets D. bone marrow cells and water

One of the first breakthroughs in biotechnology was the discovery of the gene that makes insulin. Part of this process involved scientists making DNA to match each possible sequence of insulin mRNA. What was the next step of this process? A.

Which of these modes of transmission require a bodily opening either natural or artificial?

Which factor is a characteristic of an acid? A. Non-corrosive B. Soapy C. Sour D. Slippery

How are unique daughter cells created in meiosis? A. Homologous pairing B. Crossing over C. Mutation during reduction Division D. Zygote fertilization