The flashcards below were created by user
thom.mccusker@gmail.com
on FreezingBlue Flashcards.
-
Mycology is the study of:
Select one:
A) fungi
B) Algae
C) viruses
D) bacteria
A) fungi (this multiple choice question has been scrambled)
-
Bacteria are very active but not yet reproducing in which phase:S
elect one:
A) lag
B) death
C) stationary
D) log
A) lag (this multiple choice question has been scrambled)
-
Mesophiles grow best at:
Select one:
A) 40-50
B) 25-30
C) 0-10
D) 10-20
B) 25-30 (this multiple choice question has been scrambled)
-
Halophiles require an environment with a high concentration of _________ for optimal growth.
Select one:
A) sugar
B) phosphorous
C) alcohol
D) salt
D) salt (this multiple choice question has been scrambled)
-
Serial dilutions are used to:
Select one:
A) obtain bacterial cultures at several different concentrations
B) speed up the growth of microbes
C) form bacterial colonies
D) slow down the growth of microbes
A) obtain bacterial cultures at several different concentrations (this multiple choice question has been scrambled)
-
Klebsiella os
- -a genus of bacteria of the family Enterobacteriaceae containing nonmotile
- -gram-negative, frequently encapsulated rods that are arranged singly, in pairs, or in short chains.
- -includes some human pathogens.
-
clostridium
genus of rod-shaped, spore-forming, chiefly anaerobic bacteria including the nitrogen-fixing bacteria found in soil and those causing botulism and tetanus.
-
Sporulation occurs in:
Select one:
A) citrobacter
B) staphylococcus
C) klebsiella
D) clostridium
D) clostridium (this multiple choice question has been scrambled)
-
Sporulation
can be triggered by adverse conditions, or as part of asexual reproduction
-
Sporulation usually occurs in response to :
Select one:
A) an increase in ultraviolet radiation
B) a decrease in the amount of water
C) a decrease in the level of carbon or nitrogen
D) an increase in temperature
C) a decrease in the level of carbon or nitrogen (this multiple choice question has been scrambled)
-
Starch would be broken down to maltose by which of the following enzymes?
Select one:
A) maltase
B) cellulase
C) amylase
D) lipase
C) amylase (this multiple choice question has been scrambled)
-
Amylase
is any of a group of enzymes that catalyze the hydrolysis of starch to sugar to produce carbohydrate derivatives
-
Maltase
is one enzyme produced by the cells lining the small intestine to break down disaccharides.
-
Cellulase
is any of several enzymes produced chiefly by fungi, bacteria, and protozoans that catalyze the hydrolysis of cellulose
-
Lipase
is any enzyme that catalyzes the cleavage of a fatty acid anion from a triglyceride or phospholipid
-
Gram positive bacteria have:
Select one:
A) peptidoglycan in the cell walls
B) no cell walls
C) lipids in the cell walls
D) thin cell walls
A) peptidoglycan in the cell walls (this multiple choice question has been scrambled)
-
When a bacterial cell divides into two cells, the new cells are called:
Select one:
A) daughter cells
B) father cells
C) sister cells
D) son cells
A) daughter cells (this multiple choice question has been scrambled)
-
A daughter cell
is a cell formed by the division or budding of another cell; "anthrax grows by dividing into two daughter cells that are generally identical"
-
Lysis
is the death of a cell by bursting, often by viral or osmotic mechanisms that compromise the integrity of the cellular membrane.
-
plasmodesmata
The cell membrane pulls away from the cell wall, but the cell remains joined to the adjacent cells at points called plasmodesmata. Thus, the cell takes on the appearance of a pincushion, with the plasmodesmata almost ceasing to function because they have become so constricted. This condition is known as plasmolysis.
-
Plasmolysis
is the contraction of the protoplasm of cells within plants due to the loss of water through osmosis. It is when the cell membrane peels off of the cell wall and the vacuole collapses when placed in a hypertonic environment.
-
When cells are placed in a hypertonic environment they will undergo _________.
Select one:
A) lysis
B) plasmolysis
C) swelling of the cell which is contained by the cell wall
D) no change in size
B) plasmolysis (this multiple choice question has been scrambled)
|
|