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WorksheetsUnit 2: Chemistry of Living Systems
Total questions: 27
Worksheet time: 16mins
The model shows water molecules interacting. The gray circles represent oxygen, the white circles represent hydrogen.
Which conclusion is supported by this model?
Hydrogen atoms in water molecules are only attracted to other hydrogen atoms.
Oxygen atoms in water molecules are attracted to both oxygen atoms and hydrogen atoms.
Oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules.
Hydrogen atoms in water molecules are only attracted to an oxygen atom in the same water molecule.
Which statement best explains the role of energy in cellular respiration?
The cell creates energy by forming large molecules.
The cell destroys energy by breaking down large molecules.
The cell creates stored chemical energy by capturing solar energy.
The cell transfers stored chemical energy to different chemical bonds.
The diagram shows a model of the conversion between ATP and ADP.
Which statement is supported by the model?
ATP and ADP do not contain energy.
ATP contains more energy than ADP.
ADP contains more energy than ATP.
ATP and ADP contain the same amount of energy.
Which property of water is most responsible for water moving from the roots to the leaves of a plant?
osmosis
adhesion
low boiling point
high specific heat
Based on evidence from the images, which statement about the bonding of carbon atoms is true?
Carbon has the ability to form up to four bonds.
Carbon atoms form ring structures each time they bond.
Carbon containing compounds must contain double bonds.
Carbon has the ability to bond with no more than one other carbon atom.
Water is known as the universal solvent. Which accurately describes this trait of water?
polar molecule that dissolves nonpolar molecules
nonpolar molecule that dissolves polar molecules
polar molecule that dissolves other polar molecules
nonpolar molecule that dissolves other nonpolar molecules
Which is the correct inputs for cellular respiration?
glucose, oxygen
carbon dioxide, water
ATP, water
carbon dioxide and glucose
In a chemical reaction, the total number of atoms before the reaction compared to the ending number of atoms must be ________________
the same
different
Which statement is accurate when comparing the reactants with the products?
The reactants have more mass than the products.
The reactants form more quickly than the products.
The bonds of the reactants contain more energy than the bonds of the products.
The bonds of the reactants contain the same amount of energy as the bonds of the products.
According to the graph, which is true?
Energy is absorbed in this reaction.
More energy would be released than absorbed in the reaction.
The enzyme raised the activation energy required for the reaction.
The products in this reaction contain more energy than the reactants.
This image shows
Diffusion
Active Transport
Passive Transport
This image shows
Diffusion
Active Transport
Passive Transport
This is a
Protein
Lipid
Nucleic Acid
Carbohydrate
This is a
Protein
Lipid
Nucleic Acid
Carbohydrate
What is the name of the only energy molecule that can be used by the cell?
carbohydrates
lipids
ATP
ADP
How does the cell get energy from an ATP molecule?
adds a nitrogen base
breaking off one of the phosphate molecules
adding on another phosphate molecules
converting ATP to glucose
