BIOCHEM 423 Chapter Notes - Chapter 10.5: Atp Hydrolysis, Hydrolysis, Active Transport

23 views4 pages

viridianhornet922

7 Dec 2018

School

UMASS-Amherst

Department

Biochemistry & Molecular Bio.

Course

BIOCHEM 423

Professor

Ma Fu

For unlimited access to Textbook Notes, a Class+ subscription is required.

Document Summary

A the thud surrounding cells in most animals is about. 145mm in nat and 4mm in k yet , animal cells maintain a nat concentration. 12mm and a kt concentration of about 155mm . in the cytosol . sodium - potassium pump. One member of structurally related a type atpases that function in active transport across membrane . Eib - kda , directly involved in atp hydrolysis and the coupled ion transport. Auj as chaperone and is required to target the a subunit to the plasma membrane ] y subunit small regulatory subunit a a subunit traverse the membrane. , forming a multi helix channel and has three cytoplasmic domains. Atp binding domain phosphorylation domain g actuator domain. Two kt ions are pumped into the cells. , and three nations are pumped out for every atp hydrolysed . Atp is in much higher concentration than adp in most cells ,

Related Questions

Part 1: Living cells are highly ordered units, yet the universe is heading toward higher entropy. Discuss how life can maintain its order in spite of the second law of thermodynamics. Are we defying this law? Part 2: What is the advantage of using ATP as a common energy source? Another way of asking this question is, Why is ATP an advantage over using a bunch of different food molecules? For example, instead of just having a Na+/K+-ATPase in a cell, why not have a bunch of different ion pumps each driven by a different food molecule, like a Na+/K+-glucosase (a pump that uses glucose), a Na+/K+-sucrase (a pump that uses sucrose), a Na+/K+-fatty acidase (a pump that uses fatty acids), and so on?

rubyleopard401

1)Where is most of the sodium located?

	a.	inside of the cell (intracellular compartment)
	b.	outside of the cell (extracellular compartment )
	c.	inside of the nucleus (intracellular compartment)
	d.	white

2)The sodium-potassium ATPase pump moves how many sodiums out of the cell ? ;

	a.	2
	b.	3
	c.	4
	d.	1

3)Which of the following would decrease then activity of the sodium/potassium ATPase pump ?

	a.	hypoxia (low oxygen)
	b.	high oxygen
	c.	low ATP levels
	d.	none of the above

4)In order for the sodium-potassium ATPase pump to release the energy from ATP and to use it, it needs an enzyme (ATPase). Where is the enzyme located?

	a.	in the cytosol
	b.	in the ECF
	c.	in the ICF
	d.	within the pump itself

5) During states of dehydration, which of the following statements is true ?

	A.	water mores into brain cells
	B.	water moves out of brain cells
	C.	There is no net movement of water across the cell membrane of nerve cells
	D.	none of the above

6)Which of the following fluids should be used to treat cerebral edema?

	a.	0.9% NaCl
	b.	0.45 % NaCl
	c.	3.0 NaCl
	d.	None of the above

7) Which of the following conditions can result in hypernatremia?

	a.	polydipsia
	b.	dehydration
	c.	SIADH
	d.	NONE OF THE ABOVE

8)Which of the following condition could potentially cause hypernatremia.

	a.	hyperaldosteronism
	b.	hypoaldosteronism
	c.	overhydration

1 Which of the following statements is false?

(a) CO₂ and O₂ can diffuse freely across the cell membranes.

(b) The differences in permeability between artificial lipid bilayers and cell membranes arise from variations in phospholipid content.

(d) Cells expend energy in the form of ATP hydrolysis to maintain ion concentrations that differ from those found outside the cell.

2 Cells use membranes to help maintain set ranges of ion concentrations inside and outside the cell. Which of the following ions is the most abundant inside a typical mammalian cell?

(a) Na⁺

(b) K⁺

(d) Cl^â

3 Pumps are transporters that are able to harness energy provided by other components in the cells and drive the movement of solutes across membranes, against their concentration gradient. This type of transport is called _____________.

(a) active transport.

(b) free diffusion.

(d) passive transport.

harlequinbuffalo618

BIOCHEM 423 Chapter Notes - Chapter 10.5: Atp Hydrolysis, Hydrolysis, Active Transport

Document Summary

Get access

Related textbook solutions

Molecular Cell Biology

Biology: Science for Life with Physiology

Biology

Concepts of Biology

Essentials of Biology

Related Documents

BIOS1171 Lecture Notes - Lecture 5: Membrane Potential, Nernst Equation, Reflex Arc

CAS BI 203 Lecture Notes - Lecture 4: Atp Hydrolysis, Cystic Fibrosis, Nernst Equation

BIO210Y5 Study Guide - Midterm Guide: Resting Potential, Tandem Pore Domain Potassium Channel, Motor Neuron

Related Questions