When a person is experiencing heartburn, he or she feels a burning sensation in the throat and midchest. Think about the structures of the digestive system. What most likely causes the burning sensation?

Which of the four types of organic compounds serve as an energy source for cells?

The energy available in food can be measured in a lab by

Which two elements are found in water

Which process produces a greater number of offspring? A) chromosome duplication. B) asexual reproduction. C) gamete formation. D) sexual reproduction

How the insect grow although their body is entirely covered by chitin which is non elastic and non fexible

Synthesis reactions are particularly important in the body for A. Release of energy B. Digestion of food particlesC. Growth of body partsD. Neutralization of acids by buffers

Why is color- blindness more common in men than in women?

How does incoming solar radiation change with latitude? The mid-latitudes receive the most solar energy. Higher latitudes receive the least amount of solar energy. The equator receives the least amount of solar energy.

Which functional group is involved in energy release in all living cells? A. Amino group B. Carboxylic group C. Phosphate group

The concentration and toxicity of a chemical in the body is affected by: a. route of entry into the body b. received dose of the chemical c. duration of exposure d. all of the above