Question

How can a membrane push fluid against a pressure gradient?

How can a membrane push fluid against a pressure gradient?

Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

The membrane pushes a fluid against a concentration gradient by a force known as 'hydrostatic pressure', which is the pressure exerted by a fluid due to the force of gravity. The process of moving fluid towards through a cell membrane is known as 'filtration' and and while the processes of diffusion and osmosis depends on concentration gradient but, filtration depends on the pressure gradient. With the hydrostatic pressure, small molecules can pass through the membrane against a concentration gradient.

Thank you!

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In a neuron at rest, if a large number of Na+ channels in the axonal membrane...
In a neuron at rest, if a large number of Na+ channels in the axonal membrane open, Na+ will move: a. From the extracellular fluid into the cytoplasm, down its electrical gradient but against its chemical gradient. b. From the cytoplasm into the extracellular fluid, down its chemical gradient but against its electrical gradient. c. From the cytoplasm into the extracellular fluid, down its electrical and chemical gradients. d. From the extracellular fluid into the cytoplasm, down its electrical and...
Which of the following statements best describes active transport? a. 1o is against the concentration gradient...
Which of the following statements best describes active transport? a. 1o is against the concentration gradient while 2o is with the concentration gradient and a membrane associated protein must never be involved; each requires no expenditure of energy by the cell b. both 1o and 2o take place with the concentration gradient and a membrane associated protein must be involved; each requires no expenditure of energy by the cell c. a member associated protein must be involved but requires no...
Na+ gradient across the cell membrane drives the transport of most nutrients, including glucose and amino...
Na+ gradient across the cell membrane drives the transport of most nutrients, including glucose and amino acids, into animal cells. Describe how Na+ supports this process. What type of transport is this? Also, explain how Na+ gradient across the membrane is maintained.
How do the Starling forces affect filtration or reabsorption? A) Colloid osmotic pressure causes osmosis due...
How do the Starling forces affect filtration or reabsorption? A) Colloid osmotic pressure causes osmosis due to large protein present in the plasma that cannot cross the capillary membrane. This force draws fluid back into the capillary. B) Osmotic force due to interstitial-fluid protein concentration occurs when there is a large concentration of Na+ in the interstitial space, as is the case in the nephron. C) Capillary hydrostatic pressure causes filtration to occur across the entire length of the capillary....
What causes fluid and solutes to move out of the blood and through the filtration membrane...
What causes fluid and solutes to move out of the blood and through the filtration membrane is: A. they are moved by secondary active transport B. they are attracted towards the capsular space by the oncotic pressure of the filtrate C. they are forced out by the blood oncotic pressure D. they are pushed by the glomerular hydrostatic pressure E. solutes move by facilitated diffusion; water moves by osmosis
A H+ concentration gradient across a membrane is a form of potential energy Group of answer...
A H+ concentration gradient across a membrane is a form of potential energy Group of answer choices False True
38.) Which serous membrane lines the lung cavity? parietal pericardium visceral pleura parietal pleura 39.) What...
38.) Which serous membrane lines the lung cavity? parietal pericardium visceral pleura parietal pleura 39.) What is the purpose of surfactant that lines each alveolus? It tiggers osmosis which causes fluid to fill the alveolar sac It reduces the surface tension of water and keeps the alveoli from collapsing It gives a fluid that can be transported out of the body by the mucociliary escalator. gives the lungs their elasticity visceral peritoneum 40.) What characteristic(s) of the respiratory membrane facilitate(s)...
Explain why the cell membrane is modeled as a Fluid Mosaic: A) Why is it called...
Explain why the cell membrane is modeled as a Fluid Mosaic: A) Why is it called fluid, and B) Why is it called a Mosaic?
A Newtonian fluid with a density of 1290 kg/m3 and a viscosity of 88.4 mPa.s flows...
A Newtonian fluid with a density of 1290 kg/m3 and a viscosity of 88.4 mPa.s flows in a hydrodynamically smooth, horizontal pipe that is 38 mm in diameter at a flow rate of 1.7 L/s. a)   The pressure gradient will be? b)   by what factor does the pressure gradient change if the pipe diameter is increased by 1.5 times (i.e. to 57 mm)? c) Considering the system described in Q01, by what factor does the pressure gradient change if the...
When the heart pumps blood into the aorta, the pressure gradient-the difference between the blood pressure...
When the heart pumps blood into the aorta, the pressure gradient-the difference between the blood pressure inside the heart and the blood pressure in the artery-is an important diagnostic measurement. A direct measurement of the pressure gradient is difficult, but an indirect determination can be made by measuring the Doppler shift of reflected ultrasound. Blood is essentially at rest in the heart; when it leaves and enters the aorta, it speeds up significantly and-according to Bernoulli's equation-the pressure must decrease....
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT