Which of the following is true of plant cells but not of bacterial cells?
a. have cell walls
b. do not undergo mitosis
c move by means of flagella
d. have chromosomes located in a nucleus

The oxidizing agent our bodies use to obtain energy from food is oxygen (from the air). if you breathe 15 times a minute (at rest), taking in and exhaling 0.5 l of air with each breath, what volume of air do you breathe each day? air is 21% oxygen by volume. what volume of oxygen do you breathe each day?

Which of the following types of reactions would decrease the entropy within a cell? a. dehydration reaction, b. hydrolysis, c. respiration, d. digestion, e. catabolism.

What is an example of a scientific question that galileo could not have answered with out this new tool?