Ch 3 - Cell Structure & Function

B) animal cells

Which of the following never have cell walls? A) algae B) animal cells C) archaea D) bacteria E) fungi

A) three RNA molecules in two subunits.

Bacterial ribosomes are composed of several polypeptides and A) three RNA molecules in two subunits. B) three RNA molecules in three subunits. C) two RNA molecules in two subunits. D) two RNA molecules in a single complex. E) one large RNA molecule in a single complex.

A) eukaryotic

Cholesterols are typically found in ________ cytoplasmic membranes. A) eukaryotic B) bacterial C) archaeal D) prokaryotic E) both eukaryotic and prokaryotic

FALSE

T/F: Archaea are similar to bacteria in having cytoplasmic membrane that are composed of phospholipids and hopanoids.

FALSE

T/F: The short structures on the surface of the cell in Figure 3.5 are pili.

D) attach to surfaces and protect from dehydration

What is the function of the cellular structure indicated by "c" in Figure 3.2? A) provide shape only B) attach to surfaces only C) protect from dehydration only D) attach to surfaces and protect from dehydration E) serve as carbohydrate storage