What are nuclear pores? -Biology

What are nuclear pores? -Biology
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Answer :

The nuclear pore is a protein-lined channel in the nuclear envelope that regulates the transportation of molecules between the nucleus and the cytoplasm. In eukaryotic cells, the nucleus is separated from the cytoplasm and surrounded by a nuclear envelope. This envelope safeguards the DNA contained in the nucleus.
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Related questions

What is the function of nuclear pores? -Biology

Description : What is the function of nuclear pores? -Biology

Last Answer : Nuclear envelope contains a large number of pores or perforations. It controls the passage of substances to the inside or outside of the nucleus. It helps in the transport of proteins and ... the cytoplasm and also transport the carbohydrates, signaling molecules and lipids moving into the nucleus.

Assertion:- Macromolecules are able to move get fused and form pores. Reason:- At few places both nuclear membranes get fused and form pores.

Description : Assertion:- Macromolecules are able to move get fused and form pores. Reason:- At few places both nuclear membranes get fused and form pores.

Last Answer : Assertion:- Macromolecules are able to move get fused and form pores. Reason:- At few places both ... . D. If both Assertion & Reason are false.

What would happen if every single one of your pores got clogged?

Description : What would happen if every single one of your pores got clogged?

Last Answer : Death. Think about the Golden Girl in Goldfinger.

I have holes growing on my face but not due to acne or not big pores.

Description : I have holes growing on my face but not due to acne or not big pores.

Last Answer : How big are they? what part of your face is it on? how long have they been there?

How to COMPLETELY clean out my pores?

Description : How to COMPLETELY clean out my pores?

Last Answer : Work out and sweat it out.

Are the pores under a face mask actually oil?

Description : Are the pores under a face mask actually oil?

Last Answer : They are your pores. The oil has been removed with the mask. Pored are openings in the surface of your skin.

Do lips have pores?

Description : Do lips have pores?

Last Answer : Lips do have pores, if i’m not mistaken. As for what it could be, i don’t know.

What's that "creamy white" stuff that comes out of the pores of my nose when i squeeze it?

Description : What's that "creamy white" stuff that comes out of the pores of my nose when i squeeze it?

Last Answer : Um. That comes out of your nostrils or out of the side of your nose, as in your pores?

Does medication you take seep through your pores and leave traces on your skin like salt, garlic etc does?

Description : Does medication you take seep through your pores and leave traces on your skin like salt, garlic etc does?

Last Answer : I would think that if any did, it would be such a tiny amount, it couldn’t hurt your cat. I take Tramadol and morphine too, and my cat licks my fingers. She appears as healthy as can be.

How come I have really big pores on my cheeks?

Description : How come I have really big pores on my cheeks?

Last Answer : It may be genetic. even so, you can make them less noticeable. You should try using a bentonite clay mask twice a week. Mix the clay powder with some apple cider vinegar until it's a consistency you ... let it dry. Then rinse. There are directions on the container. I use it myself. Works great =)

What's the best way to get rid of large pores on your face?

Description : What's the best way to get rid of large pores on your face?

Last Answer : You won’t be able to get a permanent effect. Daily cleanings (maybe twice a day) and weekly masks are your best bet.

Does the monistat shaving relief creme clod your pores?

Description : Does the monistat shaving relief creme clod your pores?

Last Answer : …I thought monistat was a treatment for yeast infections. ETA: Also, there is a drag queen who goes by Monistat.

How can you cover pores and marks on your face with makeup without wearing so much foundation

Description : How can you cover pores and marks on your face with makeup without wearing so much foundation

Last Answer : Well, I wouldn't try to cover the pores, you should try to make them smaller by using a pore reducing toner. Neutrogena makes a good one. Plus, I used Bare Essentials powder which has a great ... out fade creams that can work on scars, darker spots like freckles and sun damage. Hope that helps!

How do guard cells regulate opening and closing of stomatal pores ? -Science

Description : How do guard cells regulate opening and closing of stomatal pores ? -Science

Last Answer : The opening and closing of stomatal pores is controlled by the guard cells, when water flows into the guard cells, they swell, become curved and cause the pore to open whereas when the guard cells lose water, they shrink, become straight and close the stomatal pore

Why do eggs need pores?

Description : Why do eggs need pores?

Last Answer : When the baby chicks are developing in the egg shell, they need to breathe. The pores in the egg shell allows an exchange of good air with the bad air. A side effect to this. The pores allow moisture to escape from inside of the egg.

Which process controls the opening and closing of the pores ?

Description : Which process controls the opening and closing of the pores ?

Last Answer : The percolation process controls the opening and closing of the pores.

Does cleansing your skin with cream block pores?

Description : Does cleansing your skin with cream block pores?

Last Answer : I think it depends on the type of skin you have. If you have greasy or combination skin I think it could do but for a dry skin I don't believe it would do too much harm. Just using any cream ... skin type. There are plenty to suit all skin types these days, just choose one that is right for you.

Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.

Description : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of colloidal particle is less than filter paper pores.

Last Answer : Assertion :- Filtration of colloidal particles is not possible by filter paper. Reason :- Size of ... D. If both Assertion & Reason are False.

Assertion :- Zeolite is shape selective catalyst. Reason :- Size of the pores of the catalyst are such that they can trap only selective molecules.

Description : Assertion :- Zeolite is shape selective catalyst. Reason :- Size of the pores of the catalyst are such that they can trap only selective molecules.

Last Answer : Assertion :- Zeolite is shape selective catalyst. Reason :- Size of the pores of the catalyst are such ... . D. If both Assertion & Reason are False.

Pores on the body of sponges through which the water enters.

Description : Pores on the body of sponges through which the water enters.

Last Answer : Name the following: Pores on the body of sponges through which the water enters.

What is the best mirror for magnification so I can clean my pores?

Description : What is the best mirror for magnification so I can clean my pores?

Last Answer : you can get concave mirrors especially from school's science equipments suppliers.

The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these

Description : The ability of the cell membrane to act as a selective barrier depends upon (A) The lipid composition of the membrane (B) The pores which allows small molecules (C) The special mediated transport systems (D) All of these

Last Answer : D

The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to - 31 bar) by the force of surface tension

Description : The water, retained by the soil in capillary pores (micropores), against gravity (-1/3 to - 31 bar) by the force of surface tension

Last Answer : Ans.Capillary water

Which of the following statement(s) is/are true concerning cellular ion channels? a. Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane b. Ion channels are formed by membrane-spanning peptides that are arranged so that polar moieties line a central core c. Ion channel proteins undergo conformational changes between open states and closed states d. Ion channels can be blocked

Description : Which of the following statement(s) is/are true concerning cellular ion channels? a. Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane b. ... undergo conformational changes between open states and closed states d. Ion channels can be blocked

Last Answer : Answer: a, b, c, d Ion channels are transmembrane proteins that form pores that can conduct ions across the plasma membrane. Ion channels are formed by membrane-spanning peptides that are arranged ... be blocked by ions or organic compounds that enter the channel, bind there, and occlude the pore

A little ether on the palm gives a cooling sensation because ether (a) is a cold liquid (b) evaporates (c) enters the pores of the skin (d) condenses on the palm

Description : A little ether on the palm gives a cooling sensation because ether (a) is a cold liquid (b) evaporates (c) enters the pores of the skin (d) condenses on the palm

Last Answer : Ans:(b)

How does water move inside sponges? What is the function of the pores in these animals?

Description : How does water move inside sponges? What is the function of the pores in these animals?

Last Answer : Sponges are filtering beings. They make water enter their bodies by their lateral pores. Water then circulates inside the central cavity and exits through the osculum.

Name the tiny pores present on the surface of leaves in plants. (1) Pits (2) Stomata (3) Trichomes (4) Hydathodes

Description : Name the tiny pores present on the surface of leaves in plants. (1) Pits (2) Stomata (3) Trichomes (4) Hydathodes

Last Answer : (2) Stomata Explanation: Stomata are pores in the surface of the leaf. The pore is surrounded by two guard cells. When these two guard cells take up water, they bend and open up the pore between them.

The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above

Description : The exchange of gases takes place in the leaves through these pores for the purpose of photosynthesis. These pores are called – (1) Guard Cells (2) Stomata (3) Chloroplast (4) None of the above

Last Answer : (2) Stomata Explanation: Stomata are tiny pores present on the surface of the leaves via which exchange of gases takes place in the leaves for the purpose of photosynthesis. However, exchange of gases also occurs across the surface of stems, roots and leaves as well.

The importance of perspiration is to – (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature

Description : The importance of perspiration is to – (1) Eliminate body odours (2) Improve the general health (3) Open the pores in the skin (4) Regulate body temperature

Last Answer : (4) Regulate body temperature Explanation: The human body regulates temperature by keeping a tight balance between heat gain and heat loss. The hypothalamus responds to various temperature ... temperature when sweat evaporates, since conversion of liquid water to gaseous form takes energy.

In dicots the pollen-grains possess : (1) two germ pores (2) three germ pores (3) four germ pores (4) one germ pore

Description : In dicots the pollen-grains possess : (1) two germ pores (2) three germ pores (3) four germ pores (4) one germ pore

Last Answer : (2) three germ pores Explanation: Pollen grains of monocots have one opening, while pollen grains of dicots have three openings. Pollengrains can be monocolpate (having one germ pore called germinal furrow e.g., monocots), bicolpate (2 germ pores) and tricolpate (3 germ pores e.g., dicots).

Name the tiny pores present on the surface of leaves in plants. (1) Pits (2) Stomata (3) Trichomes (4) Hydathodes

Description : Name the tiny pores present on the surface of leaves in plants. (1) Pits (2) Stomata (3) Trichomes (4) Hydathodes

Last Answer : (2) Stomata Explanation: Stomata are tiny openings or pores in plant tissue that allow for gas exchange. Stomata are typically found in plant leaves but can also be found in some stems.

Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Description : Burns caused by steam are much severe than those caused by boiling water because – (1) Steam pierces through the pores of body quickly (2) Steam has latent heat (3) Steam is gas and engulfs the body quickly (4) Temperature of steam is higher

Last Answer : (2) Steam has latent heat Explanation: When water changes into steam, it absorbs latent heat, and when steam condenses to form water, it gives out an equal amount of latent heat. Bums caused ... boiling water, simply because steam contains more heat (in the form of latent heat) than boiling water.

The opening and closing of the stomatal pores is a function of the - (1) Guard cells (2) Chloroplast (3) Xylem (4) Phloem

Description : The opening and closing of the stomatal pores is a function of the - (1) Guard cells (2) Chloroplast (3) Xylem (4) Phloem

Last Answer : (1) Guard cells Explanation: The opening and closing of the pores is a function of the guard cells. They swell when water flows into them, causing the stomatal pore to open and likewise, the pore closes if the guard cells shrink.

In which type of topography, water recharge pores are found

Description : In which type of topography, water recharge pores are found

Last Answer : Karst Topograpgy

The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

Description : The rate of solid-liquid extraction is limited by the (A) Phase change of the solute as it dissolves in the solvent (B) Diffusion of the solute through the solvent in the pores to the outside of the particle (C) ... contact with the particle to the main bulk of the solution (D) All 'a', 'b' & 'c'

Last Answer : (D) All 'a', 'b' & 'c'

Guttation occurs through specialised pores known as..

Description : Guttation occurs through specialised  pores known as..

Last Answer : Hydathodes

How are the pores in ceramic articles plugged?

Description : How are the pores in ceramic articles plugged?sc

Last Answer : The pores in the baked ceramic articles are plugged by a process of glazing.

The soil in which the pores are interconnected and irregular in size and shape is? A. Tubular B. Vesicular C. Spongy D. Cellular

Description : The soil in which the pores are interconnected and irregular in size and shape is? A. Tubular B. Vesicular C. Spongy D. Cellular

Last Answer : C. Spongy

Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Description : Bt cotton is resistant to bollworm, it is due to (a) Bt is repellent to bollworm(b) Bt is contact poison for bollworm (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach (d) Bt is causing death due to asphagsiation of insect

Last Answer : (c) Bt is stomach poison; it changes the permeability of stomach due to generation of pores in alkaline environment of stomach

Which one of the following correctly explains the function of a specific part of the human nephron? (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule (b) Henle’s loop : most reabsorption of the major substances from the glomerular filtrate (c) Distal convoluted tubule : reabsorption of K+ ions into the surrounding blood capillaries (d) Afferent arteriole : carries the blood away from the glomerulus towards renal vein.

Description : Which one of the following correctly explains the function of a specific part of the human nephron? (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the ... blood capillaries (d) Afferent arteriole : carries the blood away from the glomerulus towards renal vein.

Last Answer : (a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule

A common structural feature of vessel elements and sieve tube elements is (a) enucleate condition (b) thick secondary walls (c) pores on lateral walls (d) presence of P-protein

Description : A common structural feature of vessel elements and sieve tube elements is (a) enucleate condition (b) thick secondary walls (c) pores on lateral walls (d) presence of P-protein

Last Answer : (a) enucleate condition

A common structural feature of vessel elements and sieve tube elements is (a) enucleate condition (b) thick secondary walls (c) pores on lateral walls (d) presence of P-protein.

Description : A common structural feature of vessel elements and sieve tube elements is (a) enucleate condition (b) thick secondary walls (c) pores on lateral walls (d) presence of P-protein.

Last Answer : (a) enucleate condition

The specific yield of soil depends upon (A) Compaction of stratum (B) Distribution of pores (C) Shape and size of particles (D) All the above

Description : The specific yield of soil depends upon (A) Compaction of stratum (B) Distribution of pores (C) Shape and size of particles (D) All the above

Last Answer : (D) All the above

Pick up the incorrect statement from the following: (A) The smaller the size of the pores, the higher the water can rise above the water table (B) Below the water table, the pore water may be static (C) The hydrostatic pressure depends on the depth below the water level (D) None of these

Description : Pick up the incorrect statement from the following: (A) The smaller the size of the pores, the higher the water can rise above the water table (B) Below the water table, the pore water may be static (C) The hydrostatic pressure depends on the depth below the water level (D) None of these

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) The permeability of the coarse-grained soils may be reduced by grouting (B) The process of injecting fluids (i.e. grouts) into the pores space of the soil is called grouting (C) The grouting increases the soil strength (D) All the above

Description : Pick up the correct statement from the following: (A) The permeability of the coarse-grained soils may be reduced by grouting (B) The process of injecting fluids (i.e. grouts) into the pores space of the soil is called grouting (C) The grouting increases the soil strength (D) All the above

Last Answer : Answer: Option D

The density of soil can be increased (A) By reducing the space occupied by air (B) By elastic compression of soil grains (C) By expelling water from pores (D) All the above

Description : The density of soil can be increased (A) By reducing the space occupied by air (B) By elastic compression of soil grains (C) By expelling water from pores (D) All the above

Last Answer : Answer: Option D

The most serious manufacturing defect from fracture toughness point of view is (A) Surface roughness (B) Pores (C) Spherical inclusion (D) Crack

Description : The most serious manufacturing defect from fracture toughness point of view is (A) Surface roughness (B) Pores (C) Spherical inclusion (D) Crack

Last Answer : Option D

The aggregate containing moisture in pores and having its surface dry, is known as (A) Moist aggregates (B) Very dry aggregates (C) Dry aggregates (D) Saturated surface dry aggregate

Description : The aggregate containing moisture in pores and having its surface dry, is known as (A) Moist aggregates (B) Very dry aggregates (C) Dry aggregates (D) Saturated surface dry aggregate

Last Answer : Answer: Option D

Pick up the correct statement from the following: (A) Sand consists of coarse particles of silica formed due to the disintegration of rocks (B) The grains of sand are not affected by frost (C) Sand beds are permeable and do not allow water to rise up between pores due to capillary action (D) All the above

Description : Pick up the correct statement from the following: (A) Sand consists of coarse particles of silica formed due to the disintegration of rocks (B) The grains of sand are not affected by frost (C) Sand ... and do not allow water to rise up between pores due to capillary action (D) All the above

Last Answer : Answer: Option D