MICROBIOLOGY-ACCESS >CUSTOM<
13th Edition
ISBN: 9780135668825
Author: Tortora
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 2MCQ
Which statement best describes what happens when a gram-positive bacterium is placed in distilled water and penicillin?
- a. No change will result; the solution is isotonic.
- b. Water will move into the cell.
- c. Water will move out of the cell.
- d. The cell will undergo osmotic lysis.
- e. Sucrose will move into the cell from an area of higher concentration to one of lower concentration.
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Students have asked these similar questions
Which statement is false regarding bacterial cell walls? A. Both Gram positive and Gram negative bacteria contain peptidoglycan in the cell wallB. Gram negative bacteria have a thin layer of peptidoglycan and stain pinkC. Gram (+) bacteria are positively charged due to phosphate groups in teichoic acidsD. Gram (-) bacteria have an outer cell wall containing lipopolysaccharideE. Both teichoic acids and lipopolysaccharide can be used to separate bacterial species
If a Gram-positive bacteria is treated with penicillin, and then placed into a hypotonic solution, what is likely to happen to the cell?
O A. osmotic lysis
OB. plasmolysis
O C. nothing would happen
O D. bacteria cell would go into dormant state.
What will happen when an animal cell is placed in a hypertonic solution?
A.
The cell will swell because water moves in.
B.
The cell will shrink because water moves out.
C.
The cell will swell because salt moves in.
D.
The cell will shrink because salt moves out.
Chapter 4 Solutions
MICROBIOLOGY-ACCESS >CUSTOM<
Ch. 4 - DRAW IT Diagram each of the following flagellar...Ch. 4 - Endospore formation is called (a) _____. It is...Ch. 4 - DRAW IT Draw the bacterial shapes listed in (a),...Ch. 4 - Match the structures in column A to their...Ch. 4 - Why is an endospore called a resting structure? Of...Ch. 4 - Compare and contrast the following a. simple...Ch. 4 - Prob. 7RCh. 4 - Starch is readily metabolized by many cells, but a...Ch. 4 - Match the characteristics of eukaryotic cells in...Ch. 4 - NAME IT What group of microbes is characterized by...
Ch. 4 - Which of the following is not a distinguishing...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which of the following statements best describes...Ch. 4 - Which of the following is false about fimbriae? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - You have isolated a motile, gram-positive cell...Ch. 4 - The antibiotic amphothericin B disrupts plasma...Ch. 4 - How can prokaryotic cells be smaller than...Ch. 4 - The smallest eukaryotic cell is the motile alga...Ch. 4 - Two types of prokaryotic cells have been...Ch. 4 - In 1985, a 0.5-mm cell was discovered in...Ch. 4 - When E. coli cells are exposed to a hypertonic...Ch. 4 - Clostridium botulinum is a strict anaerobe; that...Ch. 4 - A South San Francisco child enjoyed bath time at...Ch. 4 - Live cultures of Bacillus thuringiensis (Dipel)...
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- What controls the direction of movement of ions across the membrane? A. Peripheral proteins B. Channel proteins C. Plasmodesmata D. Carrier proteinsarrow_forwardWhen Elodea leaves were placed in 10% NaCl, what was the result? a. The cell membrane shrank away from the cell wall because the solution was hypertonic. b. The cell membrane shrank, but the central vacuole remained full. c. The cells burst because the solution was hypotonic. d. The cell became turgid.arrow_forwardWhich of these molecules provides squish to the ECM? a. Elastin b. Hydrated Matrix c. Fibronectin d. Collagen e. Integrinarrow_forward
- Which of the following statement about the bacterial cell wall is INCORRECT? a. The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids. b. Gram-positive cells have more peptidoglycan in theircell walls than Gram-negative cells. c. Gram-negative cells have a membrane both inside andoutside their cell walls. d. The cell wall establishes a bacterium’s shape as a coccus,bacillus, or spirillum.arrow_forwardWhat is the function of a cell wall?Single choice. A. to protect and support the cell B. to perform different functions in each cell C. to prevent water from passing through itarrow_forwardIf a small amount of urea were added to an isoosmotic saline solution containing cells, what would be the result?a. The cells would shrink and remain that way.b. The cells would first shrink but then be restored to normal volume aftera brief period of time.c. The cells would swell and remain that way.d. The cells would first swell but then be restored to normal volume after a brief period of time.e. The urea would have no effect, even transiently.arrow_forward
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