Jack threw several objects into a pond. One was a soccer ball that floated. One was a small metal marble that sank. One was a long tree branch that partially floated. Explain why two of the objects floated and only one sank.

Taste buds Select one: a. can perceive seven basic tastes. b. are replaced approximately every 30 days. c. can only perceive taste if the molecules are in solution. d. can be found covering both the superior and inferior surfaces of the tongue. e.

Why do you think digestion is more efficent if you are sitting up?

The alimentary canal starts with the mouth stomach o esophagus rectum

What is the study of natural systems and how humans both affect and are affected by those systems.

Which is likely to occur more rapidly in response to an extracellular signal. a. changes in protein phosphorylation b. changes in proteins being synthesized?

Examples of archaebacteria examples of archaebacteria

What are the basic units of most biomolecules contain

What is alwasy true about a binary bond

Which of these examples demonstrates metabolism? A. A person eats a large dinner for digestion and energy. B. A human's skin has the ability to tan in the sun. C. A person puts on socks because his feet are cold. D.

What structure in the fetal heart allows for mixing of blood between the two atria?