John had $20. He earned $5, spent $10, earned $5 again, and then spent $3. After this series of earnings and expenses, how much money did he owe or have left? $

With independent assortment, the ratio of phenotypes in the F2 generation of a cross between true-breeding strains (AA bb x aa BB) can be described as 9:3:3:1 when A and B are dominant over a and b. To what phenotype does the "9" in the ratio refer?

If a 10 kg object is accelerating at a rate of 2 m/s/s, how much force does it have?

Which of the following values is the largest? a. 50000 mm b. 0.5 km c. 50 m d. 5000 cm

Time (seconds) Wavelength (nm) 0.1 2 0.2 2.5 0.3 3 0.4 3.5 0.5 4 0.6 4.5 The independent variable in the graph is A) nanometers. B) seconds. C) time. D) wavelength.

Which statement is true of both active transport and facilitated diffusion? A) Both involve proteins in the cell membrane. B) Both occur in only one direction. C) Both require ATP.

Which of the following is an autotroph

A nurse is teaching a patient about insulin. which information should the nurse include? insulin is primarily regulated by:

In which phase (s) of mitosis do the chromosomes contain a single copy of dna?

How does fragmentation of ecosystems cause problems for the species living in it?

if 38 degrees Celsius is equivalent to 98.6 degrees Fahrenheit. what type of organisms would a virus infect