The "backbone", or sides, of the dna molecule are made of

a. cytosine.

b. nitrogenous bases.

c. hydrogen bonding.

d. sugar and phosphate.

A batholith is a mass of rock that forms when a large body of magma cools inside the crust. T or F

Qualitative data A. can be measured with a stopwatch or a meter stick. B. uses descriptive words like "sweet", "cloudy", "crooked" or "round". C. cannot be measured.

Organisms interact with the nonliving parts of their environments true or false

When you first get into the swimming pool the water feels rather cool; but after swimming for a while the water feels fine. a friend asks you how the water is and you tell her the "water's great".

A woman with blood type A has a child with blood type O. She accuses a man who is homozygous for blood type B of being the father.

Hemoglobin and enzymes are: A. lipids B. proteins C. carbohydrates D. nucleic acids

How would the introduction of a nonnative species most likely affect biodiversity in an ecosystem? a. The nonnative species would decrease biodiversity. b. The nonnative species would increase biodiversity. c.

Which gas is most abundant in earth's atomsphere

In which of the following types of bone is blood production most likely to occur

What happens to a carbon atom transitioning between photosynthesis and respiration?