Chemistry of Life Test

In this image, Sodium (Na) is transferring an electron to Chloride (Cl), what charge does Chloride have after this transfer?

• positive charge

• negative charge

• neutral charge

What type of molecule is formed by amino acids?

• carbohydrates

• proteins

• nucleic acids

• lipids

Which of the following is a polymer?

• amino acids

• fatty acids

• carbohydrates

• nucleotides

Temperature is one factor that affects the shape of a protein, therefore it also affects the ______________of a reaction.

• direction

• heat energy

• equilibrium

• rate

What is happening in this example of an enzyme-substrate complex?

• The catalyzed reaction is releasing a product

• New bonds are being made between the two substrates

• Restructuring of the enzymes

• The substrate is beginning to bind to the enzyme

An enzyme is a catalyst that:

• increases the activation energy

• decreases the rate of the reaction

• halts the chemical reaction

• lowers the activation energy required for the reaction to move forward

atoms of different elements bonded together in certain ratios

• covalent bonds

• ionic bonds

• compounds

• chemicals