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V. The 4- Carbon compound that reacts with acetyl co-A during Krebs cycle. (---------)

W. The 3 intermediate compounds that citric acid passes to form Oxaloacetic acid. (---------------------------------------------------------------)

X. No. of times of Krebs cycles per a Glucose molecule. (-------------------------------)

Y. The products of a Krebs cycle. (-------------------------------------------)

Z. No. of ATP molecules released during a Krebs cycle. (-------------------------)

A. No. of NADH molecules released during a Krebs cycle. (-------------------------)

B. No. of FADH2 molecules released during a Krebs cycle. (---------------------------)

C. No. of CO2 molecules evolved during a Krebs cycle. (------------------------------)

D. The last receptor of Hydrogen in the electron transport chain. (---------------------)

E. No. of ATP molecules formed from one molecule of NADH at the cytochromes. (---------------------------)

F. No. of ATP molecules formed from one molecule of FADH2 at the cytochromes. (---------------------------)

G. The total No. of ATP molecules formed from the complete oxidation of a Glucose molecule. (-------------------------------)

H. No. of ATP molecules released from a Glucose molecule in case of muscular fatigue. (--------------------------------)

I. Type of anaerobic respiration in case of muscle fibres and some bacteria. (---------------------------------------------)

J. Type of anaerobic respiration in case of Yeast fungus, and some plant cells. (---------------------------------------------)

K. The 3 reasons that make the nasal breathing preferable than the buccal one. (-----------------------------------------------------------------------------------------------------------------)

L. The common passage for food and air. (--------------------------------------)

M. The voice box. (---------------------------------------)

N. The structures that line the trachea, and beat upwards. (-------------------------------)

O. The end of fine bronchioles. (------------------------------)

P. No. of alveoli per lung. (---------------------------)

Q. The actual respiratory surface in the Human respiratory system. (---------------------)

R. The respiratory muscle. (----------------------------------)

S. Two groups of internal and external chest muscles that move the ribs. (-----------------------------------------------)

T. The percentage of lungs aeration to its capacity. (-------------------------------)

U. The nervous centre that regulates the changes in the rate and depth of respiration, and heart beats. (-------------------------------------)

V. Volume of water excreted daily as vapour from the Human body through lungs. (--------------------------------)

W. Volume of water lost daily from the Human body. (---------------------------------)



X. Openings that are present in the bark of woody stems. (--------------------------)

Y. The type of fermentation that form an acid instead of an alcohol. (------------------)

Z. The muscles that contract during inspiration. (---------------------------------)

A. The muscles that relax during expiration. (--------------------------------)

B. 5 passage ways through which O2 gas reaches the cells of a vascular plant. (---------------------------------------------------------------------------------------------------------)

C. A group of plants that its seeds have the ability to respire anaerobically if they are kept under anaerobic conditions. (-----------------------)

2. Give reasons for:

A. The glucose molecule is considered as an excellent example to study the steps of breaking down the food molecules.

B. ATP molecules can be considered as the universal currency of energy in the cell.

C. Krebs cycle and electron transport take place both inside the mitochondria.

D. During the stages of cellular respiration co-enzyme that act as Hydrogen carriers are needed.

E. Krebs cycle happens twice per a Glucose molecule.

F. Krebs cycle needs no Oxygen.

g. The 1st. compound formed during Krebs cycle is 6- Carbon compound.

H. Krebs cycle is also called Citric acid cycle.

I. Cytochromes are present at the inner membrane of the mitochondria.

J. Oxygen is considered the last receptor of Hydrogen in the electron transport chain.

K. Anaerobic respiration is called acidic fermentation in case of seeds of Angiosperms.

L. Anaerobic respiration is called alcoholic fermentation in case of Yeast fungus.

m. Itís preferable for air to enter through the nose.

n. The trachea wall contains a series of cartilage ¾ rings.


Date: 2015-12-11; view: 203


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