Mental Math and Properties a. Show how to use a property of arithmetic to make the addition problem 897+542+103 easy to calculate mentally. Write equations to show your use of a property of arithmetic. State the property you use and show where you use it. b. Use the associative property of multiplication to make the problem 24 × 0.25 easy to calculate mentally. Write equations to show your use of the associative property of multiplication. Explain how your solution method is related to solving 24 × 0.25 by thinking in terms of money. c. Explain how to use the distributive property to calculate 29 × 40 mentally by first calculating 30 × 40. Write an equation to show your use of the distributive property.

A community of organisms interacting with their physical environment is a/an _____.

If of a cup of food gives you your daily value of potassium, then what fraction of your daily value of potassium is in 1 cup of the food?   Make a math drawing to help you solve the problem and explain your solution. Use our definition of a fraction in your explanation and attend to the whole (unit/reference amount) that each fraction is of.

Describe three general methods for determining which of two fractions is greater. Illustrate the three methods with the fractions and .

Describe in detail at least four important characteristics of our base-ten number system. Your explanation should include a discussion of place value and face value. Use the number 2920 to help highlight the characteristics you are describing.

The Ames test is used to determine if a chemical is a mutagen. If the suspected mutation is really causing mutations, what results do you expect?

Match each label with the correct structure in the figure. 1. [answer1] 2. [answer2] 3. [answer3] 4. [answer4]

During the light reactions, an H+ gradient is made via

To drive endergonic reactions, cells typically use

The phenomenon in which an enzyme undergoes a conformational change that strains chemical bonds within the substrates (reactants) and/or brings them closer together is called