T or F _ Cytosine, guanine, thymine and adenine are referred to as phosphates. T or F DNA is in the shape of a helix.

A nucleotide is made up of a suqar, phosphate and two nitrogen bases.

Replication is performed prior to cell division.

Adenine always pairs with quanine.

Complementary base pairing matches up complementary sugars.

T or F _The sides of the DNA molecule are made up of repeating nitroqen bases and suqars.

The letters that make up the DNA molecule code for qenes.

T or F _ Replication results in two strands of DNA, each of which has half of the oriqinal strand.

T or F Covalent bonds hold nitrogen bases together, forming the rings of the DNA ladder.

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

15 ! come and answer! a(n) is the general term for an infectious disease that has spread across a city, region, or country.

A(n) is a molecule influences the way that a molecule reacts.