Advertisements
Advertisements
प्रश्न
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
विकल्प
Ethanol
Chloroplast
Mitochondria
Golgi body
उत्तर
Mitochondria
During anaerobic respiration in human beings, pyruvic acid is converted into lactic acid in the mitochondria of the muscle cells.
APPEARS IN
संबंधित प्रश्न
State whether the statement is true or false:
Aquatic animals breathe at a slower rate than the terrestrial animals.
Carbon dioxide enters into the leaves through tiny pores present on the surface of the leaf called _________.
(a) chlorophyll
(b) chloroplast
(c) stomata
(d) epidermis
Cellular respiration takes place in
(a) Lysosome
(b) Chlorophyll
(c) Mitochondria
(d) Ribosome
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
Give the main points of difference between respiration in plants and respiration in animals.
Which of the following increases in muscle cells when they are lacking in oxygen?
Which of the following is the correct sequence of air passage during inhalation?
(a) nostrils → larynx → pharynx → trachea → lungs
(b) nasal passage → trachea → pharynx → larynx → alveoli
(c) larynx → nostrils → pharynx → lungs
(d) nostrils → pharynx → larynx → trachea → alevoli
One of the following organisms does not depend on the simple diffusion of gases for breathing and respiration. This organism is:
There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
(a) Which of the animals could be Amoeba?
(b) Which of the animals could be frog?
(c) Which animal could be fish?
(d) Which animal could be grasshopper?
(e) Which animal could be earthworm?
Some sugar solution is taken in a test-tube and a little of substance X in powder form is added to it. The mouth of test-tube is closed with a cork and allowed to stand for sometime. On opening the cork, a characteristic smell of substance Y is obtained and a gas Z is also observed to be formed. The gas Z extinguishes a burning matchstick.
(a) What could be (i) X, (ii) Y, and (iii) Z?
(b) What is the process of converting sugar into substance Y by the action of X known as?
(c) What type of respiration is exhibited by X in the above process?
An animal in which the oxygenation of blood does not take place in the lungs is:
A student has set up "CO2 is released during respiration”. After about 1 hour he observes no change in the water level in the delivery tube. Write two possible resons for the failure of the experiment.
Given below is an example of certain structure and its special functional activity:
"Kidney and excretion".
Fill in the blanks on a similar pattern.
'C' shaped cartilage rings and ____________.
Give suitable explanation for the following :
Why does a person feel breathlessness at higher altitudes?
Give Suitable Explanation for the Following :
Why do you shiver and why do your teeth chatter when it is very cold in winter?
Air that enters through the nose passes into this tube.
Mark the following statement as True or False. Correct the false statement.
Insects have spiracles on the lower surface of the body.
The exchange of gases in the leaves takes place with the help of __________.
