Which parts of the heart prevent backflow of blood in the circulatory system and allow the heart to work like a pump?

A.) atria

B.) valves

C.) ventricles

Explain what would happen to the salmon's cells if this process did not occur.

A high concentration of carbon dioxide in the blood A. slows oxygen exchange in the lungs B. decreases breathing rate C. increases heart rate D. inhibits ventricular contraction

What does your body do with the heat released during cellular respiration?

When more sensory neurons are tuned to a particular feature of a stimulus, the organism will:?

Which is an application of DNA technology in medicine? mapping human genes for manipulation determining specific traits that a baby will have before its conception producing disease resistant humans determining hereditary diseases in individuals and

Carbohydrates provide the raw fuel for

Which body parts don't fossilize because animals tend to consume them? A) bones B) muscles C) shells D) teeth

How many atoms are in a single molecule of water h2o?

What is not a way in which prokaryotes are useful to humans? A. To synthesize drugs B. To form a symbiotic relationship and obtain ammonia C. To produce foods such as yogurt D. None of the choices

Which worm has eye sockets that are used to detect light? 1) a fluke 2) a marine worm 3) a planarian 4) a tapeworm