Veins carry deoxygenated blood while arteries carry blood rich with oxygen.

1) True

2) False

Water is considered a polar molecule because

True or false? nicotine increases the release of the neurotransmitter, dopamine, in the brain.

Where does metaphasen1 occur

How is control of a disease such as the bubonic plague complicated by the fact that it spreads across multiple animal species? (can anyone also simplify the question so that I may understand what is being asked?)

He thin layer of compact bone that separates an adult's epiphysis from the diaphysis is called the

What is the period during the cardiac cycle when the ventricles are completely closed and blood volume in them remains constant as the ventricles contract?

Forest elephants in Africa have been confirmed as a different species from the larger savanna elephant seen here. Scientists believe the savanna elephant is as different from the forest elephant as Asian elephants are from woolly mammoths.

What competitive processes or forces are ever-present during a star's lifetime?

Which occurs during transcription? A. DNA is copied to create a second DNA strand. B. mRNA codons and tRNA anticodons assemble amino acids. C. DNA is unzipped with the aid of DNA polymerase. D. mRNA is synthesized from a strand of DNA.

In a beach ecosystem, what can limit growth of organisms? A. ocean and rocks B. oxygen C. abundant food source D. moderate temperatures