How many people are on planet earth

After humans migrated out of Africa, where did they inhabit first? a.) Siberia b.) North America c.) Europe d.) South America

Which of the following statements about olfactory receptors is false? They are bulb-like structures at the tip of the frontal lobe where the olfactory nerves begin. They are cells. They are located in a mucous membrane at the top of the nose.

When would a testcross be done?

The length of an eccentric motion that a muscle can perform is a. Aerobic b. Flexibility

A loose pile of rocks and soil travels in a single large mass. The mass moves a short distance downhill. Which mass movement does this describe? creep erosion landslide slump

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) ?