Which statement best describes the function of the

heart?

O A. The heart oxygenates the blood

OB. The heart produces red blood cells

O C.

The heart circulates the blood

OD.

The heart filters toxins from the blood

The four main types of macromolecules are organic. What does organic mean in this context? O A. It is a very large molecule. O B. It is produced without the use of pesticides. O C. It is made from or produced by a living organism. O D.

Which type of inherited traits can have a codominant or incompletely dominant relationship

How do scientists know that the universe is expanding? The Doppler effect shows stars with yellow shifted light The Doppler effect shows stars with green shifted light The Doppler effect shows stars with red shifted light The Doppler effect shows

Is ash less dense or more dense than water?

The brain, {blank}, and nerves are made up of nervous tissue.

The parents of an infant with tetralogy of fallot ask a nurse about the problems involved with this disorder. when answering, what must the nurse consider?

Assume that a plasmid is 4000 base pairs in length and has restriction sites at the following locations: 600, 1000, 2200, and 3800. Give the expected sizes of the restriction fragments following complete digestion.

What is the correct procedure for students to follow if a chemical is spilled? Splash large amounts of water to dilute the spill. Stand back and advise the teacher of the spill. Immediately ask to go to the restroom.

What is ATP, and when is energy released from it

Why do scientists classify fish, amphibians, reptiles, birds, and mammals together in one group?