Complete the sentences to describe the structure of DNA.

The shape of the DNA molecule is called a double

The backbone of DNA is made of

molecules and phosphate molecules

The "rungs" of DNA are made of

Quiz In order to accurately determine absolute time, you need to know which of the following? -the rate at which radioactive decay occurs -a collection of fossil shells from sedimentary rocks -how much radioactive decay has occurred -a sequence of

One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of NH3 to NO: 4NH3 (g) 5O2 (g) - -> 4NO (g) 6H2O (g) In a certain experiment 2.00 g of NH3 reacts with 2.50 g of O2. Which is the limiting reactant?

A car gets 15.5 kilometers per liter of gas. Gas cost. 43 per liter. If I drove 124 kilometers, how much money would I spend in gas?

All solutions contain 2 or more compounds. True or False and explain

Which of the following instruments has the highest pitch? bass drum flute trombone

If atmospheric pressure suddenly changes from 1.00 atm to 0.892 atm at 298 k, how much oxygen will be released from 4.40 l of water in an unsealed container?

Determine the molecular formula for the unknown if the molecular mass is 60.0 amu and the empirical formula is ch2o.

Draw the organic product of the following nucleophilic reaction

How does the energy of the activated complex compare with the energies of reactants and products? select one: a. it is lower than the energy of both reactants and products. b.

A student asked to convert measurements from liters to mililiters and from mililiters to liters. His answers are shown in bold in the choices shown below. On which choice did he make a mistake?