MOD. MAST. MICRO. W/E-TEXT FOR MICRO. W
1st Edition
ISBN: 9780135841402
Author: BAUMAN
Publisher: PEARSON
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Chapter 3, Problem 11MC
A Gram-negative cell is moving uric acid across the cytoplasmic membrane against its chemical gradient. Which of the following statements is true?
- a. The exterior of the cell is probably electrically negative compared to the interior of the cell.
- b. The acid probably moves by a passive means such as facilitated diffusion.
- c. The acid moves by an active process such as active transport.
- d. The movement of the acid requires phagocytosis.
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Which of the following statements is correct about passive diffusion? Select one: A) It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentration gradient).
B) It is a process in which molecules move from a region of higher concentration to a region of lower concentration (or down a concentration gradient).
C) It requires an expenditure of energy by the cell.
D) It may require a transport protein.
E) It involves movement of molecules down a concentration gradient and may require a transport protein.
Can you answer all the parts to this question please
A. What is the difference in peptidoglycans in gram negative vs gram positive cells/
B. Why does Gram stain not bind to gram negative bacteria?
Which of the following is incorrect regarding facilitated diffusion?a. It is a passive process.b. It allows the movement of molecules from areas of lowconcentration to areas of high concentration.c. It may use either channel or carrier proteins.d. It allows the rapid transport of glucose across the membrane.
Chapter 3 Solutions
MOD. MAST. MICRO. W/E-TEXT FOR MICRO. W
Ch. 3 - Prob. 1TMWCh. 3 - In 1985, an Israeli scientist discovered the...Ch. 3 - Why is a pilus a type of fimbria, but a flagellum...Ch. 3 - Why is the microbe illustrated in Figure 3.2 more...Ch. 3 - The Big Game College sophomore Nadia is a star...Ch. 3 - When the bacterium Escherichia coli is grown in a...Ch. 3 - Prob. 6TMWCh. 3 - Why do scientists consider bacterial and archaeal...Ch. 3 - Why did scientists in the 19th and early 20th...Ch. 3 - Why do some scientists consider archaea, which are...
Ch. 3 - Why are eukaryotic glycocalyces covalently bound...Ch. 3 - Many antimicrobial drugs target bacterial cell...Ch. 3 - Colchicine is a drug that inhibits microtubule...Ch. 3 - A cell may allow a large or charged chemical to...Ch. 3 - Which of the following statements concerning...Ch. 3 - A 9 + 2 arrangement of microtubules is seen in...Ch. 3 - Which of the following is most associated with...Ch. 3 - Which of the following is not associated with...Ch. 3 - Which of the following is true of Svedbergs? a....Ch. 3 - Which of the following statements is true? a. The...Ch. 3 - Prob. 8MCCh. 3 - Bacterial flagella are ______________. a. anchored...Ch. 3 - Prob. 10MCCh. 3 - A Gram-negative cell is moving uric acid across...Ch. 3 - Gram-positive bacteria _______________. a. have a...Ch. 3 - Endospores ________________. a. are reproductive...Ch. 3 - Prob. 14MCCh. 3 - Dipicolinic acid is an important component of...Ch. 3 - Match the structures on the left with the...Ch. 3 - Match the term on the left with its description on...Ch. 3 - Label the structures of the following prokaryotic...Ch. 3 - Label each type of flagellar arrangement.Ch. 3 - A scientist who is studying passive movement of...Ch. 3 - Describe (or draw) an example of diffusion down a...Ch. 3 - Sketch, name, and describe three flagellar...Ch. 3 - Prob. 3SACh. 3 - The term fluid mosaic has been used in describing...Ch. 3 - A local newspaper writer has contacted you, an...Ch. 3 - Prob. 6SACh. 3 - Compare bacterial cells and algal cells, giving at...Ch. 3 - Contrast a cell of Streptococcus pyogenes (a...Ch. 3 - Differentiate among pili, fimbriae, and cilia,...Ch. 3 - Prob. 10SACh. 3 - Prob. 11SACh. 3 - Prob. 12SACh. 3 - What is the function of glycocalyces and fimbriae...Ch. 3 - Prob. 14SACh. 3 - Compare and contrast three types of passive...Ch. 3 - Prob. 16SACh. 3 - Prob. 17SACh. 3 - Prob. 18SACh. 3 - Prob. 1CTCh. 3 - Methylene blue binds to DNA. What structures in a...Ch. 3 - Prob. 3CTCh. 3 - Prob. 4CTCh. 3 - A researcher carefully inserts an electrode into...Ch. 3 - Prob. 6CTCh. 3 - An electron micrograph of a newly discovered cell...Ch. 3 - An entry in a recent scientific journal reports...Ch. 3 - Prob. 9CTCh. 3 - Prob. 10CTCh. 3 - Prob. 11CTCh. 3 - Prob. 12CTCh. 3 - Prob. 13CTCh. 3 - Prob. 14CTCh. 3 - Using the following terms, fill in the following...
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- Active transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other directionarrow_forwardWhich of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.arrow_forwardWhich of the following distinguishes osmosis from simple diffusion? a) a concentration gradient b) a solute c) a selectively permeable membrane d) water moleculesarrow_forward
- What is the name of the phenomenon in which a white blood cell engulfs a pathogen? Which cytoskeletal structures are involved in this process? a. phagocytosis and microtubules. b.phagocytosis and microfilaments. c. pinocytosis and microtubules d. d. pincytosis and microfilamentsarrow_forwardThe cells lining the small intestine rapidly move large quantities of glucose from the glucose-rich food into their glucose-poor cytoplasm. Using this information which transport mechanism is most probably functioning in the intestinal cells? a) simple diffusion b) phagocytosis c) active transport pump d) exocytosis e) Facilitated diffusionarrow_forwardDefine the following terms: a. semipermeable membrane b. hypotonic c. hypertonic d. crenation e. hemolysisarrow_forward
- Which of the following is true of passive transport?a. it requires a gradient b. it uses the cell wall c. it includes endocytosis d. it only moves waterarrow_forwardHow can substances be transported across a membrane against their concentration gradient? A. If the plasma membrane is fully hydrophobic. B. The plasma membrane is permeable to all small molecules. C. Some membrane proteins act as channels for specific molecules to enter the cell. D. Some membrane proteins are ATP-dependent carrier molecules.arrow_forward_______ is the net movement of substances from a high concentration to a low concentration medium, whereas the _______ is the net movement of water across a membrane. a. Diffusion- ultrafiltration b. Dialysis-osmosis c. Diffusion-osmosis d. Osmosis-diffusionarrow_forward
- Which of these statements about carrier-mediated facilitated diffusion is true? a. It uses cellular ATP. b. It is used for cellular uptake of blood glucose. c. It is a form of active transport. d. None of these are true.arrow_forwardYou are sneaky and would like to avoid the deadly grip of phagocytes. Your sweet tooth should help you. a. What is the structure being described? b. What is the chemical composition of this structure? c. What is the function of the structure, and how does it benefit the bacteria?arrow_forwardWhen an animal cell is placed on an isotonic solution, water molecules will A) Move out of the cell, resulting in shrinkage B) move into the cell until it bursts C) move into and out of the cell at equal rates D) stop moving need help for this, thanksarrow_forward
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