Chapter 3 quiz 1 Flashcards Quizlet PDF

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Terms in this set (30) Each bacterial species represents a distinct organism that can produce viable offspring when mating with other bacteria of its kind. TrueFalse

Chapter 3 quiz 1

false

Which of the following is not a characteristic of

All of these are characteristics of bacteria.

bacteria?

They have absent organelles, bacteria does not have a membrane enclosed nucleus, have shorter DNA known as

It does not have

plasmids, In eukaryotes the DNA is wrapped around

membrane-bound

histones. They have a peptidoglycan cell wall, no plasma

organelles.

membrane, , they are single-celled.

Its DNA is not encased in a membrane. It has a cell wall made of peptidoglycans or other distinct chemicals. Al of these are characteristics of bacteria. Its DNA is wrapped around histones.

The slime layer provides

False

bacteria greater pathogenicity as compared to the capsule. True False

True virus and bacteria lack a true nucleus. Viruses have Cellular organisms without

no nuclei. Bacteria are considered to be prokaryotes,

a true nucleus include

which means they do not have a nucleus and other

bacteria and viruses.

membrane-bound organelles. Instead, the DNA is found in

True

the nuceloid, a region with no membrane, or as a plasmid,

False

a small circle of extra genetic information, floating right in the cytoplasm, the fluid that fills the cell.

Chapter 3 quiz 1

The _____ stain is used to stain and differentiate

acid-fast The acid-fast stain is a differential stain used to identify

Mycobacterium and

acid-fast organisms such as members of the genus

Nocardia from other

Mycobacterium . Acid-fast organisms are characterized by

bacteria.

wax-like, nearly impermeable cell walls; they contain

basic

mycolic acid and large amounts of fatty acids, waxes, and

acid-fast

complex lipids.

Gram negative methylene blue

A flagellum is anchored

basal body

into the bacterial cell envelope by its:

(different question, same meaning: The basal body of a

sheath.

flagellum is anchored into the cell membrane.)

basal body. outer membrane. filament. hook.

Bacterial endospores are

Staphylococcus

not produced by:

Clostridium, Sporosarcina, and Bacillus do produce endospores.

Clostridium. Sporosarcina. All of the choices are correct. Staphylococcus. Bacillus.

Chapter 3 quiz 1

Two major structures that allow bacteria to adhere to

fimbrae, capsules

surfaces are ___ and ___. actin filaments, phospholipid membrane(s) pili, ribosomes lipopolysaccharides, techoic acids actin filaments, ribosomes fimbrae, capsules

Streptobacillus A chain of rod-shaped cells would be called a(an) palisades. staphylococcus. streptococcus. streptobacillus. staphylobacillus.

In the arrangement of bacilli, there is no staphylobacillus. Bacillus are rod-shaped. Think of "strep" like a strip and rod-shaped chain like a mall... a strip mall....in a line. In the arrangment of cocci, there is staphylococci and streptococci. Cocci shape is circular. This question is not asking about a circular cluster(cocci),

Flagella move in a whiplike

False. The flagellum rotates in a clockwise or

motion.

counterclockwise direction, in a motion similar to that of a propeller.

True False

Chapter 3 quiz 1

The transfer of genes during bacterial

Sex pili

conjugation involves rigid, tubular appendages called flagella. fimbriae. cilia. periplasmic flagella (axial filaments). sex pili.

Which of the following

NOT found in acid fast bacterial cell walls (non-typical cell

does not pertain to

walls)

endotoxin? All pertain to endotoxins: Involved in typhoid fever and is involved in typhoid fever

some menigitis cases.

and some meningitis cases

Can stimulate fever in the human body. They are found in

can stimulate fever in the

specific bacterial cell wall lipids in the outer membrane of

human body

gram negative bacteria.

is found in acid-fast

Can cause septic shock in the human body.

bacterial cell walls is a specific cell wall lipid can cause septic shock in the human body

Which of the following is

Plasmids- genes essential for growth and metabolism.

mismatched? inclusions - excess cell

plasmids are small circular pieces of DNA that replicate

nutrients and materials

independently from the host's chromosomal DNA.

plasmids - genes essential for growth and metabolism cytoplasm - dense, gelatinous solution nucleoid - hereditary material ribosomes - protein

Chapter 3 quiz 1

Endospores of certain bacterial species can enter

True

tissues in the human body, germinate, and cause an infectious disease. True False

Which term is not used to

Tetrad

describe bacterial cell shapes?

Structures called tetrads, which means "groups of four," exist in bacteria, fungi, algae and protozoans.

tetrad

The term refers to products of cell division in eukaryotes

spirochete

and of organism division in bacteria.

coccus rod vibrio

The question asks for shapes, not cell division....