Catalase is an enzyme found in plant and animal cells. Hydrogen peroxide is a harmful substance found in cells. Catalase causes hydrogen peroxide to breakdown into water and oxygen. What type of molecule is catalase?
a) A lipid
b) A protein
c) A nucleic acid
d) A carbohydrate
e) A sugar
The energy of the sun is converted into usable energy for the cell in the form of _________.
a) ADP
b) ATP
c) CO2
d) glucose
37. The innermost electron shell of an atom holds a maximum of ______ electrons.
a) 2
b) 4
c) 6
d) 8
e) 10
38. The pH of the fluid in your stomach is around pH 2. The fluid is ____________.
a) acidic
b) basic
c) neutral
39. The chemical bond that results in the transfer of electrons is a _______ bond.
a) hydrogen
b) covalent
c) polar
d) ionic
Organisms in the Plantae kingdom are ____________.
a) multi-cellular and autotrophic
b) multi-cellular and heterotrophic
c) unicellular and autotrophic
d) unicellular and heterotrophic
e) both unicellular and multi-cellular
You examine a cell under a microscope and you do not see a well defined nucleus. You conclude the cell must be a(n) _____________ cell.
a) prokaryotic
b) eukaryotic
c) plant
d) animal
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