A leukocyte is responsible for:

bringing oxygen to the other body cells

fighting disease by phagocytosis or antibody production

causing muscle contraction

conducting nervous impulses throughout the body

Alcohol or other drugs are involved in 70% of teen suicides. a. True b. False

During a chemistry demonstration, a student added liquid hydrochloric acid, HCl, to a beaker holding powdered baking soda, NaHCO3. The solution in the beaker began to bubble and fizz as carbon dioxide gas, CO2, escaped.

Why meiosis and mitosis are required in sexually reproducing organisms (like humans)

How to tell the difference between macroconidia and microconidia?

How long did it take to develop the first life forms?

Stranded on an island, you have two sources of water to drink: salty ocean water and contaminated fresh water. explain your choice of drinking water and indicate why your selection is the best choice.

How are a hypothesis a prediction and an experiment related

Two species of garter snakes live in the same geographic area. One lives mainly in water and the other mainly on land; therefore, they rarely encounter each other and do not interbreed. What type of isolation is this?

Matter that has a definite column but no definite shape is a

Many pharmaceutical drugs specifically inhibit transcription in bacteria but not archaea or eukarya. why would drugs that inhibit transcription only affect bacteria and not archaea even though they are both prokaryotes?