What kind of bond holds the two strands of the double helix together?

1. For calculating work, the force and the distance must be in the same

Suppose a culture containing 2*108 bacteria was exposed to ionizing radiation sufficient to kill 99.99% of the cells. calculate the number of bacteria you expect to survive this treatment.

You find an unlabeled container of a chemical in your work area. What would be the best thing to do according to this procedure?

A biology class wanted to study the effect of different materials on the melting rate of ice. They placed pieces of ice, each with a mass of 10g, onto trays.

Which method (s) can be used to join double-stranded breaks in DNA? (choose all that apply) a. homologous end joining b. polymerase chain reaction c. homologous recombination d. Non-homologous end joining

Fertilization that occurs when pollen from one plant lands on the pistil of a flower on the same plant. A) dominant B) recessive C) true-breeding plant D) hybrids E) cross-pollination F) heredity G) self - pollination

When treating any broken bone for transport, be sure to ... ?

Identify the differences and similarities between mitosis and meiosis. Infer what makes these processes vital to our survival?

The cell theory states that A) all living things are made of cells. B) all cells have only one nucleus. Eliminate C) plants do not have cells. D) only animals have cells

2) The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice were the main predators of the forest beetles.