In expression
² - + 5 the coefficient of is
Answers
Answer:
Respiration (REVISION)
Multiple choice questions:
1) During heavy exercise we get cramps in the legs due to the accumulation of
(a) Carbon dioxide
(b) Lactic acid
(c) alcohol
(d) water
2) During inhalation, the diaphragm
(a) becomes flat
(b) becomes dome shaped
(c) moves towards left
(d) moves towards right
3)During exhalation, the ribcage
(a) moves upwards and outwards
(b) moves downwards and inwards
(c) moves from side to side
(d) does not move at all
4)Which of the following is not a part of human respiratory system?
(a) lungs
(b) oesophagus
(c) trachea
(d) diaphragm
5) Yeast converts glucose into
(a) Starch
(b) alcohol
(c) lactic acid
(d) Yogurt
6) In cockroaches, air enters the body through
(a) lungs
(b) gills
(c) spiracles
(d) moist skin
7) One of the following organisms can live without the oxygen of air. This organism is
(a) Amoeba
(b) Yak
(c) yeast
(d) Leech
8) The animal which can breathe through the lungs as well as through skin is :
(a) fish
(b) dolphin
(c) frog
(d) crocodile
9) Which of the following does not have lungs for breathing?
(a) lizard
(b) frog
(c) fish
(d) fox
10) Which of the following is not a product of aerobic respiration ?
(a) carbon dioxide
(b) alcohol
(c) energy
(d) water
11)One of the following does not have gills for breathing
(a) prawn
(b) crab
(c) whale
(d) fish
12) As compared to inhaled air, the exhaled air contains more of
(A) Water Vapour (B) Oxygen (C) carbon dioxide (D) Nitrogen
(a) A & B
(b) A & C
(c) Only C
(d) B & D
13) The energy of food which we eat is released slowly inside our body by the process called
(a) Transpiration
(b) Pollination
(c) Excretion
(d) Respiration
14) When air is blown from mouth into a test tube containing lime water, the lime water turns milky due to the presence of
(a) Oxygen
(b) Carbon dioxide
(c ) Nitrogen
(d) Alcohol
SHORT QUESTIONS
1) What are the products obtained in the anaerobic respiration if it takes place in
(a) Muscles
(b) Yeast
2) Name the type of respiration in which the end products are
(a) Alcohol and Carbon Dioxide
(b) Carbon Dioxide and Water
3) Consider the following animals- fish, grasshopper, cockroach, earthworm, frog , cow , goat , man , lizard , snake. Which of these animals, breathe
(a) only through skin.
(b) through skin and lungs
(c) only through lungs
(d) through Spiracles and trachea
(e) through gills
4. Mention one point of difference between:
(a) Inhalation and exhalation
(b) Aerobic and anaerobic respiration
(c) Internal and External respiration
5. What do you mean by anaerobic respiration? When does anaerobic respiration occur in the human body? Write an equation for the respiration in yeast cells.
6. Write an equation (a) for the aerobic respiration in humans
(b) for the anaerobic respiration in muscles