Chapter 15 Reading Quiz

According to this figure, (The most recent tree of life figure 15.5)

Eukarya shares a more recent common ancestor with Archaea than it does with Bacteria.

The structure labeled "C" is responsible for

Flagella: moving the cell through its environment.

Which of the following comparisons between prokaryotes and eukaryotes is correct?

Prokaryotes are smaller than eukaryotes.

Which of the following statements about prokaryotes is NOT correct?

They do not live in the ocean because of its high salt content.

Which of the following is NOT true of methanogens?

They require oxygen to survive.

Bacteria reproduce through binary fission, which means

a bacterial cell splits in two, resulting in two genetically identical bacterial cells.

An archaean that is a halophile would be

a prokaryotic organism that thrives in a very salty environment.

If a new bacterial species was discovered that converts nitrogen gas into ammonia, then this bacteria would likely

be beneficial for plant life.

Pathogenic microbes

can be destroyed by other microbes.

Acidithiobacillus is a prokaryote that gets its energy from chemicals, such as sulfur, and gets its carbon from carbon dioxide. It is a

chemoautotroph.

Prokaryotes that are consumers are

chemoheterotrophs or photoheterotrophs.

A comparison of prokaryotic and eukaryotic DNA would show that

eukaryotes have a greater proportion of non-coding DNA than prokaryotes.

Prokaryotes that decompose, or break down, dead organisms to use their nutrients are

heterotrophic.

Thermophiles are organisms that

live at extremely high temperatures.

Bacteria are NOT able to

multiply through both sexual and asexual reproduction.

If a person finds out that her belly button is dominated by aerobes, this means that most of the microbes living there

need oxygen to survive.

Heliobacterium is a prokaryote that gets its energy from light and gets its carbon from organic matter. It is a

photoheterotroph.

In order to attach to a surface, a bacterial cell would use its

pili.

Citizen science projects

require cooperation between the general public and professional scientists.

Quorum sensing refers to the ability of some bacteria to

sense the density of nearby bacteria and respond accordingly.