Exam 2: Chemical Principles

All forms of life function optimally at a pH of 7.

Which of the following is the type of bond holding K+ and I- ions in KI?

Figure 2.1 -Which compound in Figure 2.1 is an ester?

Individual covalent bonds are stronger than individual ionic bonds.

Table 2.2 NaOH ⇌ Na+ + OH-  base HF ⇌ H+ + F- - acid MgSO4 ⇌ Mg2+ + SO42-  salt KH₂PO4 ⇌ K+ + H₂PO4-  acid H₂SO4 ⇌ 2H+ + SO42-  salt Which of the following statements about the reactions in Table 2.2 is FALSE?

Starch, dextran, glycogen, and cellulose are polymers of

Any compound that contains carbon is considered to be strictly organic.

Which of the following is the type of bond between molecules of water in a beaker of water?

Identify the following reaction: Lactose + H₂O → Glucose + Galactose

The antimicrobial drug imidazole inhibits sterol synthesis. This would most likely interfere with

If an amino acid contained a hydrocarbon (a group of multiple carbons and hydrogens linked together) as its side group, in which of the following categories could it be appropriately designated?

Elements only achieve the full complement of electrons in outermost energy cells by donating away or sharing electrons.

Which of the following statements about the atom 12 C is FALSE? 6

Figure 2.1 -In Figure 2.1, which is an alcohol?

Which type of molecule contains -NH₂ (amino) groups?

Figure 2.1 -Which compound in Figure 2.1 is an organic acid?

An E. coli culture that has been growing at 37°C is moved to 25°C. Which of the following changes must be made in its plasma membrane to help it cope with the decrease in temperature?

Two glucose molecules are combined to make a maltose molecule. What is the chemical formula for maltose?

Which type of molecule NEVER contains a phosphate group?

Figure 2.3 What kind of bond is at the arrow in Figure 2.3?