SMS General Hospital Pre-Test

Which macromolecule is shown?
 View Figure 1 (if not visible)

• lipid
• protein
• nucleic acid
• carbohydrate

Which of the following statements is true of ALL FOUR macromolecules?

• They contain carbon

• They protect the cell

• They are ring structures

• They contribute to the structure of the cell

A protein is a macromolecule that is used to...

• give cells/systems energy.

• build cell parts.

• give cells/systems long term energy storage.

• help cells with chemical processes.

Water is necessary to...

• give cells/systems energy.

• build cell parts.

• give cells/systems long term energy storage.

• help cells with chemical processes.

Lipids form protective barriers in the body, such as the cell membrane. Which statement about their structure explains why they have this function?

• Lipids are nonpolar, preventing the cell from getting dissolved in water.

• Lipids have a twisting ladder structure that lets them stretch out and cover more surface area.

• Lipids have a ring structure that creates long chains of stored energy.

• Lipids have a globular structure that let them bond with specific structures around the cell.

Which of the following conclusions can be drawn from this graph?

• The optimum pH of the enzyme is 6.6.
  
• The optimum pH of the enzyme is 5.8
  
• The enzyme’s activity increases as pH increases 5.0 to 9.0
  
• The enzyme’s activity is greater around pH of 8.0 .
  

Enzymes are composed of which of the following monomers? 

• amino acids
• carbohydrates
• nucleotides
• monosaccharides

What is indicated by letter A?

• enzyme
• product
• substrate
• active site

What is indicated by letter C?

• enzyme

• product

• substrate

• active site

What is indicated by letter B?

• enzyme

• product

• substrate

• active site