Midterm Review (24)

What is the effect of an enzyme on the energy of a chemical reaction?

• Enzymes increase the free energy of the products.

• Enzymes decrease the free energy of the reactants.

• Enzymes decrease the difference in energy between products and reactants.

• Enzymes decrease the activation energy of the reaction.

What BEST describes the role of light in the overall process of photosynthesis?

• Light provides the energy for breaking apart sugars into small molecules.

• Light provides the energy for assembling small molecules into sugars

• Light accepts the energy that is released by small molecules.

• 
  Light accepts the energy that is released by sugars

Choose the correct macromolecule to monomer

• Iipid- sugar

• Carbohydrate- amino acids

• Lipid- fatty acids

• nucleic acid- sugar

An example of a protein is:

• sugar

• enzyme

• cell membrane

• DNA

Which type of macromolecule has the function of storing and transmitting hereditary or genetic information

• Carbohydrates

• Lipids

• Protein

• Nucleic Acids

The process in which plants allow evaporation is called

• condensation

• transpiration

• precipitation

• runoff

The reactants of photosynthesis are:

• Carbon dioxide & water

• sugar & Oxygen

• Oxygen and Nitrogen

• Sugar & carbon dioxide

The cells of all organisms contain DNA. In cells of which of the following groups is the cellular DNA enclosed in a nucleus?

• bacteria

• eukaryotes

• prokaryotes

• viruses

e following structures are typically present in both plant and animal cells?

• cell walls

• centrioles

• chloroplasts

• mitochondria

After her run, Aisha felt thirsty. Thirst was her body’s way of telling her she needed more water to maintain _____.

• growth

• metabolism

• development

• homeostasis