Using operant conditioning, B. F. Skinner showed that animals could be trained to perform complex tasks.

How is it possible for two individuals to have the same phenotype but different genotypes for a trait?

Organisms cannot create the energy they need to live they must capture and form their environment true or false

Oxygen enters the blood in ... a.) bronchi b.) pharynx c.) larynx d.) alveoli

What is the "Symbiotic Theory" and how does it fit in with cells?

According to Nutton, we are unable to identify any diseases familiar to us today because because we are hampered by the great difference between ancient and modern understanding of the concept of 'a disease'.

Two steel balls that are the same mass and size are rolled with the same force across different level surfaces. The ball rolling across carpet will come to a stop faster than the one rolling across concrete because of A) air resistance. B) friction.

In a given population of plants there is variation in the time of day when flowers open. Those individual plants with flowers that open at night would be more likely to pass on this trait in an environment dominated by what?

Are Diffusion and Osmosis types of active transport?

What is salinity? what units are used to express the salinity in water?

Extracellular fluid is also called A) cytosol B) intracellular fluid C) interstitial fluid D) cytoplasmic matrix