Microbiology Dynamic Study Module Chapter 12

What is the stimulus for the reproduction of a plasmodial slime mold?

Absence of water or food

A phycologist studies which of the following?

Algae

Agar is derived from the cell walls of which of the following?

Algea

Which eukaryotic microbes are normally not pathogenic?

Algea

Which of the following photosynthetic pigments is used by a wide variety of organisms, including green plants, algae, and cyanobacteria?

Chlorophyll a

Which of the following features characterizes diatoms?

Chlorophylls a and c and carotene

Which group of algae is most similar to plants in terms of their cell wall composition and chlorophyll?

Chlorophyta

Fungal spores in clinical samples are used to identify pathogens. Which of the following spore types is incorrectly paired?

Dikaryon: the fusion of fungal cells from different mating types

Which of the following groups of protozoa contains members capable of producing neurotoxins?

Dinoflagellates

Which of the following groups of protozoa is thought to have descended from eukaryotes that lost their organelles?

Diplomonadida

Which of the following divisions of fungi is incorrectly paired?

Division deuteromycota: produce sexual ascospores

Which of the following protozoa is not an alveolate?

Euglenids: lack mitochondria

Water molds were once classified as fungi on the basis of which of the following characteristics?

Filamentous growth

Which of the following is not a locomotive structure found in protozoa?

Fimbriae

Some protozoa reproduce sexually through a complex process called conjugation; which of the following events does not happen during conjugation?

Fusion of haploid macronuclei to form diploid micronuclei

Conjugation as a microbial process involves the transfer of which of the following?

Genetic material

Chrysolaminarin is a storage product found in which group of microbes?

Golden algae

Which of the following is not classified as an insect vector?

Mites

Which of the following statements about lichens is not true?

Mycelia are bits of lichen that may be relocated by wind or rain.

In which locations would genetic material be found inside a eukaryotic cell?

Nucleus, mitochondrion, chloroplast

Which group of algae produces alginic acid, a substance often used as a thickening agent?

Phaeophyta

In the taxonomy of plants and fungi, the division is a taxon equivalent to which of the following?

Phylum

Which of the following stages is responsible for generating the genetic variation associated with meiosis?

Prophase I

During which of the following stages of mitosis do chromosomes consist of two chromatids?

Prophase and metaphase

Which of the following sequences reflects the correct order of events in mitosis?

Prophase, metaphase, anaphase, telophase

Which of the following kingdoms contains eukaryotic microbes?

Protista

Carrageenan is found in the cell walls of which group of algae?

Red algae

Replication of an organism's genetic material is a central part of which of the following life processes?

Reproduction

The formation of spores by fungi is a part of which of the following processes?

Reproduction

Which of the following is common to mitosis and meiosis?

Spindle

Which taxon is characterized by "hairy" flagella?

Stramenopila

Which of the following is not a characteristic of algae?

They exist only in unicellular forms.

Which of the following statements does not describe fungi?

They have no nuclear membrane.

Which vector carries African sleeping sickness?

Tsetse fly

Which of the following scientists proposed a five-kingdom system of taxonomy for the classification of eukaryotes?

Whittaker

The motile feeding stage of a protozoan is called __________.

a trophozoite

Dinoflagellates are classified as a type of protozoa based on the presence of __________ in their cells.

alveoli

During __________ of mitosis, sister chromatids are separated and move toward the poles of the cell.

anaphase

All of the following groups of protozoa have names related to their form of locomotion except __________.

apicomplexans

Fungi acquire nutrients by absorption; that is, they secrete catabolic enzymes outside their bodies to break large organic molecules into smaller molecules, which they then transport throughout their bodies. Most fungi __________.

are saprobes that absorb nutrients from the remnants of dead organisms

All of the following are characteristics of amoebae except __________.

bioluminescence

A chemoheterotroph gets its energy from __________ and uses __________ forms of carbon.

chemicals; organic

The type of asexual fungal spore that forms within hyphae is called a __________.

chlamydospore

Multiple nuclear divisions without cytoplasmic divisions results in cells called __________.

coenocytes

Haploid nuclei __________.

contain one set of chromosomes

All of the following match the correct arthropod vector with the correct disease except __________.

flies; Lyme disease

Arachnids have __________ pairs of legs as adults.

four

Meiosis produces __________.

four haploid nuclei

Slime molds were once thought to be a type of __________, but now they are classified as a type of __________.

fungus; protozoan

Microbiologists study parasitic helminths because these organisms __________.

have microscopic infective and diagnostic life stages

Cells duplicate their DNA during __________.

interphase

A special group of euglenozoa called __________ is named after unique regions of mitochondrial DNA located in their single large mitochondrion.

kinetoplastids

The protozoa are noted for which of the following?

locomotive structures

Carolus Linnaeus was the scientist responsible for the foundations of __________.

modern taxonomy

The most important arthropod vector of disease is the __________.

mosquito

The study of fungi is called ________.

mycology

What are fungal diseases called?

mycoses

The most significant microbial disease transmitted by fleas is _______, carried by ____ fleas.

plague; rat

Free-living microbes that are the foundation of aquatic food chains are called __________.

plankton

The protozoan plasmodium reproduces using a unique method of asexual reproduction called __________.

schizogony

All of the following terms are associated with sexual reproduction except __________.

schizont

A cross wall found in some hyphae is called a ___________, and the fungi are known as ___________.

septum; septate hyphae

The stemlike portion of a seaweed is called its __________.

stipe

Amoebae include microbes with __________.

threadlike pseudopods

In a protozoan, a motile __________ is the feeding stage of a typical protozoan, while a __________ is the resting stage often resilient to environmental changes.

trophozoite; cyst

Notable ciliates include __________, whose apical cilia create a whirlpool-like current to direct food into its "mouth."

vorticella