Matthew has been observing 10 bacteria in a petri dish for his science class. if the bacteria population doubles every 12 hours, how many bacteria will be in the dish after 2 full days?
a. 20 bacteria
b. 40 bacteria
c. 80 bacteria
d. 160 bacteria

Which statement describes compounds a. compounds are made of one type of atom. b. compounds cannot be represented by models. c. compounds are represented by chemical formulas. d. compounds cannot be broken down into simpler forms.

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.

What class of levers is shown in this image?