A box contains 79 coins, only dimes and quarters.  The amount of money in the box is $12.70.   How many quarters and dimes are in the box? TYPE YOUR WORK IN THE BOX BELOW.     NO WORK = NO POINTS                   NO CREDIT FOR GUESS & CHECK a.  Clearly assign an algebraic expression to each coin (use only ) b.  Write an algebraic equation modeling the problem  NO EQUATION = NO POINTS      c.  Solve d.  Clearly write out your answer(s).

After incubation, which plate is likely to have zero growth?

A(n) _______ solution has the same concentration of water as the cell placed in the solution.

If a sperm cell contains 8 chromosomes, it comes from an animal that has ______

In pea plants, smooth (S) peas are dominant over wrinkled (s) peas in the single gene controlling pea texture. A plant with smooth peas is crossed with a plant with wrinkled peas. Of the progeny, 252 are smooth and 247 are wrinkled. What are the genotypes of the parent plants?

Ethanol is used in the DNA isolation process because

A student was measuring the height of plants grown with different types of fertilizer or with plain water. He took his measurements using inches, then realized that he needed to use metric units, so he converted his measurements from inches to centimeters. What is the control group in this experiment?   Plant Measurement in inches Measurement in centimeters A 12 ? B 5 ? C 7.2 ? D 2 ?

A student was measuring the height of plants grown with different types of fertilizer or with plain water. He took his measurements using inches, then realized that he needed to use metric units, so he converted his measurements from inches to centimeters. The plant that was watered with plain water grew 12.7 cm. Which plant was watered with plain water? Plant Measurement in inches Measurement in centimeters A 12 ? B 5 ? C 7.2 ? D 2 ?

A(n) _______ solution has a higher concentration of water and lower concentration of solute than the cell placed in the solution.

How can you determine the optimum pH of an enzyme?