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The end products of aerobic respiration are?
P. Neelakantaiah
Subject Expert
Respiration
The food provides energy for all
bodily activities only after break
down through the process known as
Respiration.
Thus respiration leads to final
utilization of food. When oxygen is
plentiful, respiration normally takes
over. Cells of the living body used
food constantly to help our body to
function properly. The term respiration derived from Latin word 'respire'
meaning 'to breathe' refers to the
whole chain of process from the
inhalation of air to the use of oxygen
in the cells.
Events/ steps in Respiration
Respiration is a very complex
process of several bio-chemical and
physical processes.
Breathing
- Air movement into
and out of lungs.
Gaseous
- Exchange of gases
exchange
between alveoli and
at lungs levels blood.
Gas
transport by
blood
- Oxygen transport
from alveoli to
body cells.
Gaseous
exchange at
tissue levels
- Exchange of oxygen from blood
into the cells.
Cellular
respiration
- Using oxygen to
produce CO2+H2O
releasing energy to
be used for life
processes.
in mitochondria in the form of ATP.
That's why mitochondria are called
power houses of cell.
Air passes from nostrils to nasal
cavity to pharynx, larynx, trachea and
bronchi, bronchioles to alveoli and
blood and back through the same
route. Gas exchange in the lungs take
place in the tiny air sacs called alveoli
in the lungs. The lungs have millions
of alveoli and each lies in contact with
capillaries. Oxygen and CO2 diffuse
readily across a combination of the
alveolar wall, the capillary wall and a
thin layer that lies between them.
Respiration includes inhalation, expiration processes during inspiration
the volume of the chest cavity is increased as the diaphragm contracts dome flattens out, its internal pressure
decreases and the air from the outside
rushes into the lungs.
Respiration is not essentially a
process of combustion differ due to
so many reasons, and photosynthesis
and respiration appear to be opposing
reactions. But both have very different biochemical pathways and are
essential for a plants metabolism.
Plants can aerate their roots by
taking in the oxygen through the lenticels or through the surface of their
root hairs. They obtain oxygen from
the air spaces existing between the
soil particles. The plants in marshy
land and mangroves have adaptation
have aerated roots.
Important Experiments
Cellular Respiration:
The pathway by which cells release energy from the chemical bonds
of food molecules that enters into them. It provides that energy for the
essential processes of life. So the
living cells must carry out cellular
respiration.
It can be in the presence of oxygen that is Aerobic Respiration or in
its absence that is Anaerobic Respiration. Prokaryotic cells like bacteria
occur within the cytoplasm and
eukaryotic cells. Cytoplasm and Mitochondria are the sites of the reactions. The produced energy is stored
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Testing for production of heat
and CO2 under anaerobic respiration.
Observing change during combustion of sugar.
To show the heat released during
respiration.
To show the CO2 released during
respiration.
Important Questions
1 Mark
1. State two similarities between
aerobic and anaerobic respiration.
2. If you have a chance to meet pulmonologist, what questions you
are going to ask about pulmonary
respiration?
3. Why does the air become more
moist in the nasal cavity?
4. What is fermentation?
5. What happens when lactic acid is
accumulated in muscles?
6. Draw a well labeled diagram of
mitochondria.
4 Marks
Tenth Class
Biology
6. How can the sprinters run a long
time?
7. How do green plants respire in
the absence of sunlight?
8. What are the major differences
between the respiratory system in
males and females?
2 Marks
1. An athlete completed 100 m.
race by holding his breath. Give
reason.
2. Inhaled air contains 21% oxygen
whereas exhaled air contains only 16% oxygen. Give reasons
behind it.
3. Can we say that combustion and
respiration are almost same in
action? What evidence do you
have to prove this?
4. Fermented idli and dosa flour
gives smell. Which micro organisms are responsible for this?
5. What happens if CO2 is not
expelled during exhalation?
Previous Questions
1. Write about respiration in mangroves that grow in marshy
lands.
A. 1) Mangroves grow near the
marshy places and respire through aerial respiratory
roots.
2) The root hairs exchange the
gases from their surface.
3) They obtain oxygen from the
airspaces present between
the soil particles.
4) The plants grows in marshy
places are adapted to develop
aerial roots above this
surface which helps in gaseous exchange.
2. You have done experiment to
know about the anaerobic respiration.
Answer
the
following.
i) Give the list of apparatus
ii) Will oxygen be removed by
heating glucose?
1. Neelu asked his teacher "while
playing I get fatigue". Write the
reasons for this and method to
reduce the fatigue.
2. Explain the formation of wine
through a flow chart?
3. What is the function of haemoglobin in blood? Why do some
animals not have haemoglobin in
their blood? What is the role of
blood in respiration?
4. What is the role of epiglottis and
diaphragm in respiration?
5. Write the differences between aerobic and anaerobic respiration.
6. What happens if food enters the
wind pipe?
7. How do you appreciate the mechanism of respiration in our body?
TSRJC-2015
1. Lenticels are present on
1) Stem
2) Roots
3) Leaves
4) Flower
2. Breathing roots are present in
1) Neem
2) Mango
3) Banyan
4) Mangroves
3. The percentage of oxygen in inhaled air is
1) 13%
2) 16%
3) 21%
4) 18%
4. If the alveoli of our lungs are
spread out, they will cover an
iii) Write about the procedure
of the experiment.
A. i. materials required:
Thermos flask, thermometer,
test tube, yeast, glucose, bicarbonate solution, paraffin,
collecting tubes etc.
ii. Yes the oxygen will be removed by heating glucose and
cooling without shaking.
Procedure
1) Glucose solution is taken in a
area of nearly
2) 160 m2
1) 60 m2
2
3) 80 m
4) 100 m2
5. The end products of aerobic respiration are?
1) Lactic acid + energy
2) Ethanol + CO2 + energy
3) Lactic acid + ethanol + energy
4) CO2 + water + energy
6. Muscular pain is caused due to
accumulation of
1) Lactic acid 2) Citric acid
3) Tartaric acid 4) Nitric acid
Answers
1) 1;
5) 4;
2) 4;
6) 1.
3) 3;
4) 2;
APRJC-2015
1. The power houses of cells are?
1) chloroplasts 2) nuclei
3) mitochondria 4) chromosomes
2. Tracheal respiration is done in
the following organisms.
1) amoeba
2) grasshopper
3) fish
4) frog
3. Haemoglobin present in our red
blood cells is a kind of?
1) carbohydrate 2) fat
3) protein
4) juices
4. In ATP the energy is stored in the
form of these bonds.
1) oxide
2) carbonate
3) phosphate 4) bicarbonate
Answers
1) 3;
2) 2;
3) 3;
4) 3.
flask.
2) It is boiled and cooled without
shaking to remove oxygen.
3) Yeast is added to the solution.
Then some paraffin liquid is
poured on the solution.
It prevents the entry of O2 into
the glucose solution.
4) A test tube containing bicarbonate solution is arranged.
Both flask and test tube are
closed with two holed rubber
corks.
5) Thermos flask and test tube are
connected with gas collecting
tube.
6) In order to check if O2 is removed from the mixture a few drops of diazine green are added to
the sugar solution
(It turns to pink in the low concentration of O2)
7) Thermometer is fixed through
another hole into the flask.
Then initial temperature is noted
down.