Quiz-Chapter 2-4

Which of the following pieces of evidence support the Endosymbiont Theory. Choose all that apply.

-Sphingolipids are not found in the inner membrane of mitochondria -Chloroplasts have their own ribosomes that are similar to those of certain bacteria -Mitochondria has circular DNA much like bacterial chromosomes

Which of the following macromolecules are long polymers of repeating monomers? Choose all that apply.

-polysaccharides -Nucleic acid -Proteins

The primary structure of a protein

All of these statements are true.

Which of the following is not a fundamental property of carbon?

Carbon atoms are most likely to form ionic bonds with one another.

Mitochondria are thought to have evolved from ancient bacteria. Which characteristics of a free-living bacteria have mitochondria lost over time?

Motility

Which of the following is characteristic of eukaryotic cells only?

Possesses a membrane-bounded nucleus

Which of the following statements about the polymerization of macromolecules is false?

Water is added to join the monomers of the macromolecules.

The main limiting factor that makes a large surface area/volume ratio important is

diffusion.

Which of the following macromolecules is insoluble in water?

lipids

The smooth endoplasmic reticulum functions in synthesis of

lipids.

Which of the following pairs correctly matches the monomer with its polymer?

nucleotides; nucleic acid

Which of the following is not a function of a lipid?

plant cell wall

Hydrogen bonding is most important in stabilizing the ________ structure of many proteins.

secondary structure

Which of the following are not matched correctly (molecule with its function)?

starch: plant cell wall

The function of triglycerides is

to store energy