How does the immune system know if a foreign particle has infected the body?

Why is uric acid advantageous for nitrogenous waste excretion?

List some variables that can change in an experiment, and discuss the importance of a control group

In the Earth's mantle, heat is transferred in large convection currents. Within these currents, A. hotter and cooler rock sink but do not rise. B. cooler rock rises and hotter rock sinks. C. cooler and hotter rock rise but do not sink. D.

A plant grows faster and fuller due to large amounts of fertilizer. If the plant cross-pollinates with another plant later, how will the use of fertilizer on the parent plant affect the plant's offspring?.

Differentiate between the geology of the continents of the Paleozoic, Mesozoic, and Cenozoic eras.

The subunits of DNA are nucleotides consisting of what?

A scientist is trying to determine which clade an organism best fits into based on its characteristics. He has determined that the organism must belong to either the clade of bacteria or fungi.

Which foods should be minimized in the diet of an athlete managing gastroesophageal reflux disease (GERD) ?

What three differences between RNA and DNA.

If a gamete contains 5 chromosomes, how many chromosomes will a typical body cell contain? does the number of chromosomes change or remain the same just before mitosis (which is after chromosome duplication) ?