Which of the following statements about the Domain Bacteria is TRUE?) The mutations that improve the survival and reproduction of organisms, and thus contribute to the evolution of species, arise rapidly in prokaryotes due to their
A) Bacteria are able to increase their genetic variability by reproducing sexually.
B) Bacteria are multicellular microbes.
C) Chloroplasts are found in photosynthetic bacteria.
D) Bacteria lack membrane-bound organelles.
E) Bacterial endospores are fragile structures that are easily destroyed.
2) In bacteria, the small, circular pieces of DNA that are located outside the chromosome are called
A) flagella.
B) bacteriophages.
C) sex pili.
D) plasmids.
E) endospores.
3) The mutations that improve the survival and reproduction of organisms, and thus contribute to the evolution of species, arise rapidly in prokaryotes due to their
A) rapid rates of cell division.
B) anaerobic metabolism.
C) sexual reproduction.
D) cell wall composition.
E) absence of a nucleus.
4) The use of bacteria to break down pollutants is referred to as
A) nitrogen-fixation.
B) binary fission.
C) biofixation.
D) bioremediation.
E) biosynthesis.
5) Disease-causing bacteria are called
A) Archaea.
B) cyanobacteria.
C) pathogens.
D) protozoa.
E) viroids.
6) Which Protist causes a sexually transmitted disease?
A) Trichomonas
B) Trypanosoma
C) Giardia
D) Plasmodium
E) Pfiesteria
7) Which of the following is FALSE?
A) Viruses are smaller than bacteria.
B) Viruses are not living organisms.
C) Antibiotics cannot prevent or treat viral diseases.
D) The genetic material of viruses is not contained in a nucleus.
E) Viruses are classified in the domain Archaea.
8) A virus basically consists of
A) RNA or DNA and a membrane.
B) enzymes and a protein coat.
C) RNA or DNA and enzymes.
D) RNA or DNA and a protein coat.
E) proteins and a cell membrane.
9) Viroids
A) attack bacteria.
B) are infectious pieces of DNA enclosed in a protein coat.
C) are infectious chains of amino acids.
D) are infectious pieces of RNA.
E) have a plasma membrane.
10) Are viruses alive or are they just biologically active chemicals? Explain your reasoning.
TRUE/FALSE. Write ‘T’ if the statement is true and ‘F’ if the statement is false.
11) The Kingdom Protista is a group that can best be defined as “any eukaryote that is not a plant, animal, or fungus.” True or False?
12) Phytoplankton are very important to the aquatic ecosystems because they
A) produce glucose.
B) produce oxygen.
C) absorb carbon dioxide.
D) All of the above are true.
E) None of the above are true.
13) Individuals of which protist group can grow hundreds of feet long, and almost half a foot per day?
A) brown algae
B) cyanobacteria
C) slime molds
D) phytoplankton
E) water molds
14) Which of the following is considered to be most closely related to the plants?
A) green algae
B) slime molds
C) diatoms
D) brown algae
E) euglenids
SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.
15) What would life on Earth be like today, had eukaryotic protists not evolved?
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
16) Fungal hyphae usually are
A) diploid.
B) haploid.
c. triploid
d. n + n
17) The haploid, single-celled product of mitosis is
A) sporophyte
B) gametophyte
C) zygote
D) spore
E) gamete
18) Claviceps purpurea is an organism from phylum ________. It infects rye plants and produces toxins (including LSD) that can produce convulsions, hallucinations, and death if consumed by
a person.
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