Microbio Lecture Unit 6

Front 1

Name the domains on the figure

Back 1

See unit 6 quiz

Front 2

Match the term with its definition
A. taxa
B. taxonomy
C. binomial nomenclature
D. phylogeny

Study of classification
The system of having two names (genus and specific epithet) for each organism
Study of evolutionary relationships
Categories used to show degrees of similarities among organisms

Back 2

Study of classification - B
The system of having two names (genus and specific epithet) for each organism - C
Study of evolutionary relationships - D
Categories used to show degrees of similarities among organisms - A

Front 3

The endosymbiotic theory (a model for the evolution of eukaryotes) states that organelles arose from prokaryotic cells living inside a host prokaryote. Select ALL the eukaryotic organelles that are shown to contain rRNA closely related to prokaryoic rRNA (select ALL that apply).
A) ribosomes
B) chloroplasts
C) nucleus
D) endoplasmic reticulum
E) mitochondria
F) Golgi body

Back 3

B) chloroplasts and E) mitochondria

Front 4

All of the following are true about archaea except
A) They are prokaryotes.
B) They lack peptidoglycan in their cell walls.
C) Some are thermoacidophiles; others are extreme halophiles.
D) They evolved before bacteria.
E) Some produce methane from carbon dioxide and hydrogen.

Back 4

D) They evolved before bacteria.

Front 5

The outstanding characteristic of the Kingdom Fungi is
A) All members are photosynthetic.
B) Absorption of dissolved organic matter.
C) Absorption of dissolved inorganic matter.
D) All members are microscopic.
E) All members are macroscopic.

Back 5

B) Absorption of dissolved organic matter.

Front 6

A bacterial species differs from a species of eukaryotic organisms in that a bacterial species
A) Breeds with other species.
B) Has a limited geographical distribution.
C) Can be distinguished from other bacterial species.
D) Is a population of cells with similar characteristics.
E) All of the above are true.

Back 6

D) Is a population of cells with similar characteristics.

Front 7

Amino acid sequencing can provide with some information about
A) Enzymatic activities.
B) Nucleotide bases making up a gene.
C) Identification of an organism.
D) Antigenic composition.
E) Morphology.

Back 7

B) Nucleotide bases making up a gene.

Front 8

Bacteria and archaea are similar in which of the following?
A) Peptidoglycan cell walls.
B) Methionine is the start signal for protein synthesis.
C) Sensitive to antibiotics
D) Possess prokaryotic cells.
E) None of the above.

Back 8

D) Possess prokaryotic cells.

Front 9

Which of the following best defines a strain?
A) A population of cells that differs from other members of the species.
B) A group of organisms with a limited geographical distribution.
C) A pure culture.
D) A group of cells all derived from a single parent.
E) The same as a species.

Back 9

A) A population of cells that differs from other members of the species.

Front 10

Serological testing is based on the fact that
A) All bacteria have the same antigens.
B) Antibodies react specifically with an antigen.
C) The human body makes antibodies against bacteria.
D) Antibodies cause the formation of antigens.
E) Bacteria clump together when mixed with any antibodies.

Back 10

B) Antibodies react specifically with an antigen.

Front 11

Organism A has 70 moles % G+C and organism B has 40 moles % G+C. Which of the following can be concluded from these data?
A) The two organisms are related.
B) The two organisms are unrelated.
C) The organisms make entirely different enzymes.
D) Their nucleic acids will not hybridize.
E) None of the above.

Back 11

B) The two organisms are unrelated.

Front 12

Nucleic acid hybridization is based on the fact that
A) The strands of DNA can be separated.
B) A chromosome is composed of complementary strands.
C) Pairing between complementary bases occurs.
D) DNA is composed of genes.
E) None of the above.

Back 12

C) Pairing between complementary bases occurs.

Front 13

A clone is
A) Genetically identical cells derived from a single cell.
B) A genetically engineered cell.
C) A taxon composed of species.
D) A mound of cells on an agar medium.
E) None of the above.

Back 13

A) Genetically identical cells derived from a single cell.

Front 14

Into which group would you place a photosynthetic cell that lacks a nucleus?
A) Animalia
B) Bacteria
C) Fungi
D) Plantae
E) Protist

Back 14

B) Bacteria

Front 15

You discovered a unicellular organism that lacks a nucleus and peptidoglycan. You suspect the organism is in the
A) Animalia.
B) Archaea.
C) Bacteria.
D) Fungi.
E) Plantae.

Back 15

B) Archaea.