Question 1

Diatoms and brown algae contain yellowish photosynthetic pigments.

Accepted Answer

A) True 
 B)False

Question 2

Clostridium tetani,the bacterium that causes tetanus,can survive in soil for up to 40 years.It is most likely in which of the following structures?

Accepted Answer

A) a cell membrane 
B) a nucleus 
C) a cell wall 
D) a pilus 
E) an endospore 
A) a cell membrane 
B) a nucleus 
C) a cell wall 
D) a pilus 
E) an endospore

Question 3

Associations of fungi and plant roots are called

Accepted Answer

A) pili. 
B) mycorrhizae. 
C) lichens. 
D) root forks. 
E) endophytes. 
A) pili. 
B) mycorrhizae. 
C) lichens. 
D) root forks. 
E) endophytes.

Question 4

The first life on Earth was probably most similar to modern-day

Accepted Answer

A) bacteriA. 
B) protists. 
C) Archaeans. 
D) plants. 
E) fungi. 
A) bacteriA. 
B) protists. 
C) Archaeans. 
D) plants. 
E) fungi.

Question 5

Many drugs are produced by placing human genes into bacteria.The bacteria then transcribe and translate these genes into functional human proteins that can then be purified and given as drugs.The fact that this process works is consistent with which hypothesis?

Accepted Answer

A) Bacteria have evolved to mimic human cells. 
B) Bacteria cannot divide unless they are inside a host cell. 
C) Humans and bacteria share a common ancestor. 
D) Bacteria need to make human proteins to live inside the human body. 
E) Humans and bacteria use different genetic material. 
A) Bacteria have evolved to mimic human cells. 
B) Bacteria cannot divide unless they are inside a host cell. 
C) Humans and bacteria share a common ancestor. 
D) Bacteria need to make human proteins to live inside the human body. 
E) Humans and bacteria use different genetic material.

Question 6

When testing a sample of cells for preferred growing conditions,you find that they are obligate for growth in high concentrations of salt.These are probably bacteria.

Accepted Answer

A) True 
 B)False

Question 7

Many prokaryotes play vital roles in global nutrient cycles.

Accepted Answer

A) True 
 B)False

Question 8

The fusion of two haploid hyphae whereby the nuclei remain separate in the cell creates a ______ cell.

Accepted Answer

A) dikaryotic 
B) haploid 
C) tetraploid 
D) diploid 
E) uniploid 
A) dikaryotic 
B) haploid 
C) tetraploid 
D) diploid 
E) uniploid

Question 9

Fungi and animals are similar because they both

Accepted Answer

A) are phototrophs. 
B) have cell walls made of chitin. 
C) are heterotrophs. 
D) use starch as their main storage carbohydrate. 
E) are decomposers. 
A) are phototrophs. 
B) have cell walls made of chitin. 
C) are heterotrophs. 
D) use starch as their main storage carbohydrate. 
E) are decomposers.

Question 10

Chlamydomonas is unicellular and photosynthetic.Chlamydomonas is which of the following?

Accepted Answer

A) a slime mold 
B) an apicomplexan 
C) an amoeba 
D) a protozoan 
E) a green alga 
A) a slime mold 
B) an apicomplexan 
C) an amoeba 
D) a protozoan 
E) a green alga

Question 11

Where in a diatom would you find its yellowish photosynthetic pigment?

Accepted Answer

A) in the plasma membrane 
B) in the cytoplasm 
C) in the cell wall 
D) in the nucleus 
E) in chloroplasts 
A) in the plasma membrane 
B) in the cytoplasm 
C) in the cell wall 
D) in the nucleus 
E) in chloroplasts

Question 12

Why are lichens a good indicator of environmental quality?

Accepted Answer

A) They cannot absorb toxins. 
B) If the air is polluted they cannot get enough sunlight for photosynthesis. 
C) They cannot excrete absorbed toxins. 
D) If the soil is polluted they cannot produce roots. 
E) Toxins inhibit their reproduction. 
A) They cannot absorb toxins. 
B) If the air is polluted they cannot get enough sunlight for photosynthesis. 
C) They cannot excrete absorbed toxins. 
D) If the soil is polluted they cannot produce roots. 
E) Toxins inhibit their reproduction.

Question 13

A jellylike substance produced by red algae and used as a culture medium for microorganisms is

Accepted Answer

A) red ooze. 
B) All answers are correct. 
C) gelatin. 
D) agar. 
E) algin. 
A) red ooze. 
B) All answers are correct. 
C) gelatin. 
D) agar. 
E) algin.

Question 14

RNA was the first molecule carrying genetic information.

Accepted Answer

A) True 
 B)False

Question 15

A prokaryote that occupies a habitat consisting of a low pH is a(n)

Accepted Answer

A) thermophile. 
B) halophile. 
C) basophile. 
D) acidophile. 
E) hydrophilE. 
A) thermophile. 
B) halophile. 
C) basophile. 
D) acidophile. 
E) hydrophilE.

Question 16

Dictyostelium discoideum initially consists of individual amoeba-like cells that move independently,feeding on bacteria.When the food runs out,cells begin to aggregate to produce spores.Dictyostelium discoideum is which kind of organism?

Accepted Answer

A) an autotroph 
B) a heterotroph and autotroph 
C) a heterotroph 
D) a detritovore 
E) a heterotroph and detritovore 
A) an autotroph 
B) a heterotroph and autotroph 
C) a heterotroph 
D) a detritovore 
E) a heterotroph and detritovore

Question 17

Fungi are classified into phyla based on which characteristic?

Accepted Answer

A) organelles 
B) composition of cell wall 
C) photosynthesis 
D) reproductive structures 
E) multicellular vs.unicellular 
A) organelles 
B) composition of cell wall 
C) photosynthesis 
D) reproductive structures 
E) multicellular vs.unicellular

Question 18

Chloroplasts arose by endosymbiosis of a(an)

Accepted Answer

A) aerobic bacterium. 
B) photosynthetic bacterium. 
C) anaerobic bacterium. 
D) aerobic archaeon. 
E) photosynthetic archaeon. 
A) aerobic bacterium. 
B) photosynthetic bacterium. 
C) anaerobic bacterium. 
D) aerobic archaeon. 
E) photosynthetic archaeon.

Question 19

In fungi,a mass of aggregated hyphae is called a(n)

Accepted Answer

A) mycelium. 
B) pilus. 
C) gill. 
D) spore. 
E) ascus. 
A) mycelium. 
B) pilus. 
C) gill. 
D) spore. 
E) ascus.

Question 20

Silica walls are characteristic of

Accepted Answer

A) diatoms. 
B) euglenoids. 
C) red algae. 
D) brown algae. 
E) slime molds. 
A) diatoms. 
B) euglenoids. 
C) red algae. 
D) brown algae. 
E) slime molds.

Exam 15: Evolution and Diversity of Microbial Life

Diatoms and brown algae contain yellowish photosynthetic pigments.

Clostridium tetani,the bacterium that causes tetanus,can survive in soil for up to 40 years.It is most likely in which of the following structures?

Associations of fungi and plant roots are called

The first life on Earth was probably most similar to modern-day

Many drugs are produced by placing human genes into bacteria.The bacteria then transcribe and translate these genes into functional human proteins that can then be purified and given as drugs.The fact that this process works is consistent with which hypothesis?

When testing a sample of cells for preferred growing conditions,you find that they are obligate for growth in high concentrations of salt.These are probably bacteria.

Many prokaryotes play vital roles in global nutrient cycles.

The fusion of two haploid hyphae whereby the nuclei remain separate in the cell creates a ______ cell.

Fungi and animals are similar because they both

Chlamydomonas is unicellular and photosynthetic.Chlamydomonas is which of the following?

Where in a diatom would you find its yellowish photosynthetic pigment?

Why are lichens a good indicator of environmental quality?

A jellylike substance produced by red algae and used as a culture medium for microorganisms is

RNA was the first molecule carrying genetic information.

A prokaryote that occupies a habitat consisting of a low pH is a(n)

Dictyostelium discoideum initially consists of individual amoeba-like cells that move independently,feeding on bacteria.When the food runs out,cells begin to aggregate to produce spores.Dictyostelium discoideum is which kind of organism?

Fungi are classified into phyla based on which characteristic?

Chloroplasts arose by endosymbiosis of a(an)

In fungi,a mass of aggregated hyphae is called a(n)

Silica walls are characteristic of

Scientific Study of Life

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Reproduction and Development of Flowering Plants

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