Which elements, typically found in carbohydrates, would be expected to be used by the body to help make proteins and lipids? Select all that apply.
1. iron
2.carbon
3.sulfur
4.hydrogen

(There’s more than one! :))

Which of the following particles always has a positive charge? a. electronb. neutron c. proton d. ion

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

What was the purpose of mendel's experiments with dihybrid crosses? a. to determine if dna was a transforming factor b. to determine if traits could be recessive c. to determine if traits affected each other d. to determine if traits had more than one allele