What are The air sacs in your lungs that create a large surface area for diffusion called?

What are The air sacs in your lungs that create a large surface area for diffusion called?
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Why do brads not have respiratory trouble at the time of flying at high all? (1) Their lungs are very large (2) They fly inactively (3) They have extra air sacs (4) They use less

Description : Why do brads not have respiratory trouble at the time of flying at high all? (1) Their lungs are very large (2) They fly inactively (3) They have extra air sacs (4) They use less

Last Answer : (3) They have extra air sacs Explanation: The avian respiratory system delivers oxygen from the air to the tissues and also removes carbon dioxide. In addition, the respiratory system plays an ... play an important role in respiration (but are not directly involved in the exchange of gases).

Why do brids not have respiratory trouble at the time of flying at high altitude ? (1) Their lungs are very large (2) They fly inactively (3) They have extra air sacs (4) They use less oxygen

Description : Why do brids not have respiratory trouble at the time of flying at high altitude ? (1) Their lungs are very large (2) They fly inactively (3) They have extra air sacs (4) They use less oxygen

Last Answer : They have extra air sacs

What is the term for the tiny air sacs in the lungs?

Description : What is the term for the tiny air sacs in the lungs?

Last Answer : Alveoli

What is the number of air sacs in the lungs ?

Last Answer : The number of air sacs in the lungs is 18 crores

Lining of blood vessel and air sacs of lungs are made up of : -

Description : Lining of blood vessel and air sacs of lungs are made up of : -

Last Answer : Lining of blood vessel and air sacs of lungs are made up of : - A. Squamous ... Epithelium C. Cuboidal Epithelium D. Pseudo stratified Epithelium.

What vertebrates have air sacs attached to their lungs that make lungs more efficient?

Description : What vertebrates have air sacs attached to their lungs that make lungs more efficient?

Last Answer : Need answer

Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals. (c) The presence of non-respiratory air sacs, increases the efficiency of respiration in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.

Description : Which one of the following statements is incorrect? (a) The principle of countercurrent flow facilitates efficient respiration in gills of fishes. (b) The residual air in lungs slightly decreases the ... in birds. (d) In insects, circulating body fluids serve to distribute oxygen to tissues.

Last Answer : (b) The residual air in lungs slightly decreases the efficiency of respiration in mammals.

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of (a) inspiratory reserve volume (b) tidal volume (c) expiratory reserve volume (d) residual volume.

Description : Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of (a) inspiratory reserve volume (b) tidal volume (c) expiratory reserve volume (d) residual volume.

Last Answer : (d) residual volume.

Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of: (1) Inspiratory Reserve Volume (2) Tidal Volume (3) Expiratory Reserve Volume (4) Residual Volume

Description : Lungs are made up of air-filled sacs, the alveoli. They do not collapse even after forceful expiration, because of: (1) Inspiratory Reserve Volume (2) Tidal Volume (3) Expiratory Reserve Volume (4) Residual Volume

Last Answer : (4) Residual Volume

How lungs fulfill this requirement that large surface area and thin epithelium are required for gaseous exchange?

Description : How lungs fulfill this requirement that large surface area and thin epithelium are required for gaseous exchange?

Last Answer : Feel Free to Answer

Normal diffusion capacity of gases in human lungs in order is :-

Description : Normal diffusion capacity of gases in human lungs in order is :-

Last Answer : Normal diffusion capacity of gases in human lungs in order is :- A. `O_(2) gt N_(2) gt CO_(2)` B. `CO_(2) gt ... CO_(2)` D. `O_(2) gt CO_(2) gt N_(2)`

Diffusion of `O_(2)` and `CO_(2)`between lungs and blood present in :-

Description : Diffusion of `O_(2)` and `CO_(2)`between lungs and blood present in :-

Last Answer : Diffusion of `O_(2)` and `CO_(2)`between lungs and blood present in :- A. Conducting zone B. Bronchial tree C. Exchanging zone D. Bronchi

The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

Description : The exchange of gases in the alveoli of the lungs takes place by (a) passive transport (b) active transport (c) osmosis (d) simple diffusion.

Last Answer : d) simple diffusion.

The presence of air sacs is a feature of which class ?

Description : The presence of air sacs is a feature of which class ?

Last Answer : The presence of air sacs is a feature of the Aves class.

Air sacs are found only inn

Description : Air sacs are found only inn

Last Answer : Air sacs are found only inn A. Aquatic birds B. Ground birds C. All birds D. No bird

Most fish do not sink in water because of the presence of: swim bladder; air bladder; air sacs; air in spongy bones?

Description : Most fish do not sink in water because of the presence of: swim bladder; air bladder; air sacs; air in spongy bones?

Last Answer : Iand II are correct

Which of the following represents the correct combination without any exception ? Characteristics Class (a) Sucking and circular mouth; jaws absent, integument without scales; paired appendages. Cyclostomata (b) Body covered with feathers; skin moist and glandular, fore- limbs form wings; (c) Mammary gland; hair on body; pinnae; two pairs of limbs. Mammalia (d) Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. Chondrichthyeslungs with air sacs. Aves

Description : Which of the following represents the correct combination without any exception ? Characteristics Class (a) Sucking and circular mouth; jaws absent, integument without scales; paired ... Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord. Chondrichthyes

Last Answer : (c) Mammary gland; hair on body; pinnae; two pairs of limbs. Mammalia

The importance of diffusion in a catalyst are increased by (A) Large catalyst particle size (B) An active surface of the catalyst (C) Small pore diameter (D) All (A), (B) and (C)

Description : The importance of diffusion in a catalyst are increased by (A) Large catalyst particle size (B) An active surface of the catalyst (C) Small pore diameter (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

How do you calculate total surface area for aveoli in lungs?

Description : How do you calculate total surface area for aveoli in lungs?

Last Answer : Need answer

If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst (A) Porosity is very important (B) Porosity is of less importance (C) Internal surface area is utilised efficiently (D) None of these

Description : If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst (A) Porosity is very important (B) Porosity is of less importance (C) Internal surface area is utilised efficiently (D) None of these

Last Answer : (B) Porosity is of less importance

Which of the following may account for the small size of the cells? A- .The rate of diffusion B- The surface area/volume ratio C- The number of mRNAs that can be produced by the nucleus D- All of the above

Description : Which of the following may account for the small size of the cells? A- .The rate of diffusion B- The surface area/volume ratio C- The number of mRNAs that can be produced by the nucleus D- All of the above

Last Answer : All of the above

Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the (A) Force of adhesion (B) Force of cohesion (C) Force of friction (D) Force of diffusion

Description : Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the (A) Force of adhesion (B) Force of cohesion (C) Force of friction (D) Force of diffusion

Last Answer : Answer: Option B

Each chloroplast encloses a system of flattened, membranous sacs called (A) Cristae (B) Thylakoids (C) Plastids (D) Cisternae

Description : Each chloroplast encloses a system of flattened, membranous sacs called (A) Cristae (B) Thylakoids (C) Plastids (D) Cisternae

Last Answer : (B) Thylakoids

What is with dogs and emptying their anal sacs?

Description : What is with dogs and emptying their anal sacs?

Last Answer : Sometimes it can be dietary, in that too soft a stool will not exert enough pressure to expel the sacs. You can do it yourself, but it requires training, and it is also quite noxious. I suggest you speak to your vet.

Why are dental sacs made?

Description : Improper tooth cleaning?

Last Answer : Improper dental care and usually causes untreated or late-treated caries

The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Description : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Last Answer : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are A ... B. Cristae C. Grana D. Stroma lamellae

Scrotal sacs of man and rabbit are connected with the abdominal cavity by

Description : Scrotal sacs of man and rabbit are connected with the abdominal cavity by

Last Answer : Scrotal sacs of man and rabbit are connected with the abdominal cavity by A. Inguinal canal B. Haversian canal C. Vagina cavity D. Spermatic canal.

In mammals, the testes occur in scrotal sacs outside the abdomen because of the

Description : In mammals, the testes occur in scrotal sacs outside the abdomen because of the

Last Answer : In mammals, the testes occur in scrotal sacs outside the abdomen because of the A. ... deferens D. Requirement of low temperature for spermatogenesis

Scrotal sacs of man is connected with the abdominal cavity by-

Description : Scrotal sacs of man is connected with the abdominal cavity by-

Last Answer : Scrotal sacs of man is connected with the abdominal cavity by- A. Inguinal canal B. Haversian canal C. Vaginacavity D. Spermatic canal

The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Description : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are

Last Answer : The structures that are formed by stacking of organized flattered membrances sacs in the chloroplasts are ... B. Stroma lamellae C. Stroma D. Cristae

What Thylakoids are membrane sacs that contain?

Description : What Thylakoids are membrane sacs that contain?

Last Answer : chlorophyll

Which of the following conditions related to smoking involves damage to the alveoli sacs? A. Lung Cancer B. Atherosclerosis C. Emphysema (Answer) D. Asthma

Description : Which of the following conditions related to smoking involves damage to the alveoli sacs? A. Lung Cancer B. Atherosclerosis C. Emphysema (Answer) D. Asthma

Last Answer : C. Emphysema (Answer)

.In a type of apomixis known as adventive embryony, embryos develop directly from the (a) nucellus or integuments (b) zygote (c) synergids or antipodals in an embryo sac (d) accessory embryo sacs in the ovule

Description : .In a type of apomixis known as adventive embryony, embryos develop directly from the (a) nucellus or integuments (b) zygote (c) synergids or antipodals in an embryo sac (d) accessory embryo sacs in the ovule

Last Answer : (a) nucellus or integuments

Which one of the following cellular parts is correctly described? (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts (b) Centrioles - sites for active RNA synthesis (c) Ribosomes - those on chloroplasts are larger (80S) while those in the cytoplasm are smaller (70S) (d) Lysosomes - optimally active at a pH of about 8.5

Description : Which one of the following cellular parts is correctly described? (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts (b) Centrioles - sites for active RNA synthesis (c) Ribosomes - ... cytoplasm are smaller (70S) (d) Lysosomes - optimally active at a pH of about 8.5

Last Answer : (a) Thylakoids - flattened membranous sacs forming the grana of chloroplasts

The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are (a) stroma lamellae (b) stroma (c) cristae (d) grana.

Description : The structures that are formed by stacking of organised flattened membranous sacs in the chloroplasts are (a) stroma lamellae (b) stroma (c) cristae (d) grana.

Last Answer : (d) grana.

Match the columns and identify the correct option. Column I Column II A. Thylakoids (i) Disc-shaped sacs in Golgi apparatus B. Cristae (ii) Condensed structure of DNA C. Cisternae (iii) Flat membranous sacs in stroma D. Chromatin (iv) Infoldings in mitochondria (a) A-(iii), B-(i), C-(iv), D-(ii) (b) A-(iii), B-(iv), C-(ii), D-(i) (c) A-(iv), B-(iii), C-(i), D-(ii) (d) A-(iii), B-(iv), C-(i), D-(ii)

Description : Match the columns and identify the correct option. Column I Column II A. Thylakoids (i) Disc-shaped sacs in Golgi apparatus B. Cristae (ii) Condensed structure of DNA C. Cisternae (iii) Flat membranous sacs in stroma D. Chromatin (iv) ... iii), C-(i), D-(ii) (d) A-(iii), B-(iv), C-(i), D-(ii)

Last Answer : (d) A-(iii), B-(iv), C-(i), D-(ii)

In flowers the terminal part of a stamen, containing the pollen sacs is known as the: a) anther b) style c) filament d) pistil

Description : In flowers the terminal part of a stamen, containing the pollen sacs is known as the: a) anther b) style c) filament d) pistil

Last Answer : ANSWER: A -- Anther

Which energy helps to create diffusion in plants ?

Description : Which energy helps to create diffusion in plants ?

Last Answer : Kinetic energy helps to create diffusion in plants.

What is the large tube that goes to the lungs called?

Description : What is the large tube that goes to the lungs called?

Last Answer : The trachea is the large tube that branches into two smaller tubes to lead air to the lungs.

The process of union of two or more molecules of a substance to form a large single molecule is called : (1) Fusion (2) Diffusion (3) Polymerization (4) Synthesis

Description : The process of union of two or more molecules of a substance to form a large single molecule is called : (1) Fusion (2) Diffusion (3) Polymerization (4) Synthesis

Last Answer : (3) Polymerization Explanation: Polymerisation is the chemical process of monomers joining together to form polymers, often it takes many thousands of monomers to make a single polymer.

The process by which cell can take in fluid and molecules too large to be carried across the plasma membrane by active transport is called a. phagocytosis b. Pinocytosis c. absorption d. diffusion

Description : The process by which cell can take in fluid and molecules too large to be carried across the plasma membrane by active transport is called a. phagocytosis b. Pinocytosis c. absorption d. diffusion

Last Answer : Pinocytosis

The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized tissues perform different functions in the organism. (iv) Entire surface of the organism is in contact with the environment for taking in food. (a) (i) and (iii) (b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Description : The Correct Statements with reference to single called organisms are (i) Complex substances are not broken down in to simpler substances. (ii) Simple diffusion is sufficient to meet the requirement of exchange of gases. (iii) Specialized ... b) (ii) and (iii) (c) (ii) and (iv) (d) (i) and (iv)

Last Answer : Answer: (c)

The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion

Description : The process of diffusion of one liquid into the other through a semi permeable membrane is called (A) Viscosity (B) Osmosis (C) Surface tension (D) Cohesion

Last Answer : Answer: Option B

Presence of large number of alveoli around alveolar duncts opening into bronchioles in mommanlian lungs is

Description : Presence of large number of alveoli around alveolar duncts opening into bronchioles in mommanlian lungs is

Last Answer : Presence of large number of alveoli around alveolar duncts opening into bronchioles in mommanlian ... system of ventilation with little residual air

Lungs have a large number of narrow tubescalled

Description : Lungs have a large number of narrow tubescalled

Last Answer : Lungs have a large number of narrow tubescalled A. Alveoli B. Bronchioles C. Bronchi D. Alveolar ducts

In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneys (3) Lungs (4) Liver

Description : In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneys (3) Lungs (4) Liver

Last Answer : (2) Kidneys Explanation: The kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals. They remove from the blood the nitrogenous wastes ... of urine. In producing urine, the kidneys excrete nitrogenous wastes such as urea and ammonium.

In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneye (3) Lungs (4) Liver

Description : In mammals, an important role of excretion is played by – (1) Large intestine (2) Kidneye (3) Lungs (4) Liver

Last Answer : (2) Kidneye Explanation: The Kidneys are bean-shaped organs that serve several excretory roles apart from the essential regulatory roles in mammals.

In mammals, an important role of excretion is played by (1) Large intestine (2) Kidneys (3) Lungs (4) Liver

Description : In mammals, an important role of excretion is played by (1) Large intestine (2) Kidneys (3) Lungs (4) Liver

Last Answer : Kidneys

The effectiveness factor for large value of Thiele modulus [L√(K/D1 )] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2 /second). (A) L √(K/D1 ) (B) 1/[L√(K/D1 )] (C) 1 (D) ∞

Description : The effectiveness factor for large value of Thiele modulus [L√(K/D1 )] of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D1 = diffusion co-efficient, cm2 /second). (A) L √(K/D1 ) (B) 1/[L√(K/D1 )] (C) 1 (D) ∞

Last Answer : (B) 1/[L√(K/D1 )]

List three characteristics of lungs which make it an efficient respiratory surface. -Biology

Description : List three characteristics of lungs which make it an efficient respiratory surface. -Biology

Last Answer : These features which particularly make our lungs efficient for gas exchange. 1.Thin: the air sac walls are very thin so that gases can quickly diffuse through them. Oxygen is absorbed in to the blood ... network so that large volumes of gases can be exchanged. More the flow of blood more exchange.