(30. While conducting research on Euglena, a researcher observed that the contractile vacuole ceased functioning yet the rest of the organism seemed healthy and active. Which of the following is MOST likely responsible for the cessation of contractile vacuole action? A. Moving the Euglena from a lighted to darkened environment. B. Moving the Euglena from a freshwater to a seawater environment. C. Moving the Euglena 10m a seawater to a freshwater environment. D. Lowering the pH of the medium from 7.0 to 6.5. E. Lowering the temperature of the medium from 20°C to 15°C.

(30. While conducting research on Euglena, a researcher observed that the contractile vacuole ceased functioning yet the rest of the organism seemed healthy and active. Which of the following is MOST likely responsible for the cessation of contractile vacuole action? A. Moving the Euglena from a lighted to darkened environment. B. Moving the Euglena from a freshwater to a seawater environment. C. Moving the Euglena 10m a seawater to a freshwater environment. D. Lowering the pH of the medium from 7.0 to 6.5. E. Lowering the temperature of the medium from 20°C to 15°C.

Ebk:Nutrition & Diet Therapy

10th Edition

ISBN:9780357391747

Author:DEBRUYNE

Publisher:DEBRUYNE

Chapter2: Digestion And Absorption

Section: Chapter Questions

Problem 8SC

See similar textbooks

Similar questions

Which of these molecules provides squish to the ECM? a. Elastin b. Hydrated Matrix c. Fibronectin d. Collagen e. Integrin
a. What is the main class of proteins that cells use to adhere to theextracellular matrix? b. How many proteins are in this family? c. What are some ECM proteins that they bind? (answer a, b, and c)
Here is a chloride cell in the gill epithelium of a fish. For reference, NKA = Na+/K+ ATPaseNKCC = Na+/K+/Cl- cotransporter. What type of fish would you expect to see this type of chloride cell? A. fresh water fish B. salt water fish C. either
Hello, May I get help with this question? I do not understand it, steps leading to the correct answer would be helpful. Question: Bruce B. was deep in the woods and drank something he probably shouldn't have (why do people keep doing this?!?!). He's with a medical doctor and trained outdoorsman who tells him that, if he doesn't get treatment immediately, the toxins in the fluid will start to lock tropinin in place just in the sarcomeres in his digestive system. He asks you, an actual physiologist, what this means and what parts of digestion, secretion, absorption, and motility will be affected. Which of the following will be MOST affected...(see image)
The gap junction channel formed by connexin 43 in cardiac muscle has which of the following properties? OA. It links excitation and calcium release between the Sarcolemma and sarcoplasmic reticulum in skeletal muscle. OB. Is opened and closed by a gate on the intracellular side of S4 OC is composed of Hexamers. OD. Is opened and closed by positive charges on S4 OE. All of the above
What sort of cellular changes would you expect a sailor sick with scurvy to experience? O Their collagen (an extracellular matrix component) would be diminished, resulting in fewer binding sites for integrins. The end result would be less adherent cells. O Their collagen (a cytoskeletal fiber) would be diminished, resulting in a loss of contractile motion within the cell, affecting both cell migration and muscle function.
Viruses that are enclosed by a membrane are more likely to be: a. a cause of GI discomfort b. identified by host immune system c. sensitive to hand washing d. a cause of lower respiratory infections
Soluble proteins are packaged into transport vesicles by binding to a. cargo receptors b. clathrin coat c. adaptin d. tethering proteins
How might an increase in the body size of the larval body reduce the toxic effects of elevated atmospheric oxygen on the insect? Mark all that apply A. Number of molecules remaining inside cell or animal body B. Diffusion distance C. Permeability D. Surface area to volume of the cell membrane or animal body E. Concentration of diffusing molecule on outside of cell or animal body F. Thickness of cell membrane or animal body
1. The best description of how muscles move is: a. spinning basal bodies b. sliding filaments c. adding and subtracting globular subunits d. rotating proteins e. contracting and expanding proteins 2. The best description of how microtubules move: a. spinning basal bodies b. sliding filaments c. adding and subtracting globular subunits d. rotating proteins e. contracting and expanding proteins 3. The best description of how eukaryotic cilia move is: a. spinning basal bodies b. sliding filaments c. adding and subtracting globular subunits d. rotating proteins e. contracting and expanding proteins 2. The best description of how microtubules move: a. spinning basal bodies b. sliding filaments c. adding and subtracting globular subunits d. rotating proteins e. contracting and expanding proteins
Name the two Integra proteins involved in chemiosmosis
25. For a Paramecium shifted from from a hypo-osmotic to an iso-osmotic environment, you would expect the activity of its contractile vacuole to .... a) increase. b) decrease. c) remain unchanged.