Exam 2: Chemistry Comes Alive

Match the following chemical bonds to the correct description: -A type of bond important in tying different parts of the same molecule together into a three-dimensional structure.

In the compound H₂CO₃,what do the numbers 2 and 3 represent?

Match the following: -Represented by the flow of charged particles along a conductor,or the flow of ions across a membrane.

Glucose is an example of a monosaccharide.

All chemical reactions are theoretically reversible.Comment on this statement.

Which of the following is the major positive ion outside cells?

The atomic weight is an average of the relative weights (mass numbers)of all the isotopes of an element.

Match the following: -Anything that occupies space and has mass.

The genetic information is coded in DNA by the ________.

Figure 2.2 Using Figure 2.2, match the following: -Thymine.

Choose the answer that best describes HCO₃^-.

Match the following: -Dry ice (frozen carbon dioxide).

A 23-year-old male was riding his road bike in 100-degree heat,when he suddenly became nauseated and weak.He called 911 from his cell phone.When the ambulance came,the paramedics started intravenous therapy for severe dehydration.Explain the critical role of water to maintain homeostasis.

An atom with an atomic number of 10 and a mass number of 24 would have ________.

Figure 2.2 Using Figure 2.2, match the following: -Guanine.

Hydrogen bonds are too weak to bind atoms together to form molecules,but they do hold different parts of a single large molecule in a specific three-dimensional shape.

Which of the following is incorrectly matched?