Home
Class 12
BIOLOGY
How many from the given below is/are the...

How many from the given below is/are the correct match ?
I. Asthma : difficulty in breathing due to inflammation of bronchi and bronchioles.
II. Carboxy-haemoglobin
III. Carbonic anhydrase : this enzyme concentration is high in blood plasma
IV. Pneumotasis center : It controls respiration and is present in the medulla

A

Two

B

Three

C

Four

D

One

Text Solution

AI Generated Solution

The correct Answer is:
To determine how many of the given statements are correct matches, we will analyze each statement one by one. ### Step 1: Analyze Statement I **Statement I:** Asthma: difficulty in breathing due to inflammation of bronchi and bronchioles. - **Analysis:** This statement is correct. Asthma is indeed characterized by inflammation of the bronchi and bronchioles, leading to difficulty in breathing. ### Step 2: Analyze Statement II **Statement II:** Carboxy-haemoglobin. - **Analysis:** This statement is incomplete as it does not provide a description or context. However, carboxy-haemoglobin refers to the compound formed when carbon monoxide binds to hemoglobin, which can lead to reduced oxygen transport in the blood. Since it lacks a complete match, we cannot consider it correct. ### Step 3: Analyze Statement III **Statement III:** Carbonic anhydrase: this enzyme concentration is high in blood plasma. - **Analysis:** This statement is incorrect. Carbonic anhydrase is primarily found in red blood cells and is responsible for the conversion of carbon dioxide and water to bicarbonate and protons. It is not predominantly found in blood plasma. ### Step 4: Analyze Statement IV **Statement IV:** Pneumotaxic center: It controls respiration and is present in the medulla. - **Analysis:** This statement is also incorrect. The pneumotaxic center is located in the pons region of the brain, not the medulla. It helps regulate the rate and pattern of breathing. ### Conclusion After analyzing all four statements: - Statement I is correct. - Statement II is incomplete and cannot be judged as correct. - Statement III is incorrect. - Statement IV is incorrect. Thus, only **one statement (I)** is correctly matched. ### Final Answer The number of correct matches is **1**. ---
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • NTA NEET TEST 102

    NTA MOCK TESTS|Exercise BIOLOGY|90 Videos

  • NTA NEET TEST 111

    NTA MOCK TESTS|Exercise BIOLOGY|90 Videos

Similar Questions

Explore conceptually related problems

Which of the following statements are CORRECT ? I. A specialized center present in the medulla region of the brain called respiratory rhythm center is primarily responsible for the regulation of respiration. II. A Chemosensitive area is situated adjacent to the rhythm which is highly sensitive to O_2,CO_2 and hydrogen ions . III . Receptors associated with aortic arch and carotid artery also can recognize changes in CO_2 and H^+ concentration and send necessary signals to the rhythm center for remedial actions. IV The neural signal from the pneumatic center can increase the duration of inspiration and thereby alter the respiratory rate .

How many of the following statements are correct regarding properties of enzyme ? (i) It lowers down the activation energy of the reaction . (ii) An active site of the enzyme is the pocket into which the substate fits . (iii) The catalytic structure of most of the enzyme is globular and primary . (iv) Carbonic anhydrase enzyme is considered as the fastest enzyme.

Knowledge Check

  • I. Respiratory surface is decreased II. One of smoking III. Due to inflammation of bronchi and bronhcioles IV. Alveolar walls are damaged V. Difficulty in breathing causing wheezing How many statements are wrong about Asthma ?

    A
    One
    B
    Two
    C
    Three
    D
    Four

  • Match Column - I with Column - II and select the correct option from codes given below: How many of the above statements are correctly match?

    A
    (i)
    B
    (i)&(ii)
    C
    (i)&(iii)
    D
    All of these

  • Among the statement given below, which statements /s is / are correct regarding the relationship between enzyme and substrate ? I. Above a certain concentration of substrate , an enzyme reaches its maximum rate of reaction II. Increasing the substrate concentration to a higher level doesn't reverse the effects of a competitive inhibitor. III At high substrate concentration , a non competitive inhibitor no longer affects the enzyme activity . IV. The higher the concentration of substrate the faster an enzyme can cataylse a reaction.

    A
    I and II only
    B
    I,II and IV
    C
    I only
    D
    III and IV only

    • Similar Questions

    Explore conceptually related problems

    (i) Mammals have negative pressure breathing. (ii) The impulses for voluntary breathing are sent by the medulla oblongata. (iii) The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings. (iv) The volume of air remaining in the lungs even after a forcible expiration is functional residual capacity. How many of the above statements are correct?

    Go through the following statements (i) the peripheral chemoreceptors for regulation of respiration are located in carotid veins and arch of aorta (ii) the primary effect of penumotaxic centre is to control the switch off point of inspiratory signal and thus limit inspiraton (iii) the chemosensitve area fo brain for respiratory control is highly sensitive to O_(2) concentration (iv) i case of feital haemoglobin the oxygen haemoglobin dissociation curve is shifted toward left ltrbgt which of these ar correct ?

    Consider the following four statements and select the correct option stating which ones are true (T) and which ones are false (F) ? (i) Proteins contribute 6-8 of the blood plasma (ii) Plasma contains very high amount of minerals (iii) Plasma without the clotting factors is called serum (iv) Glucose, amino acids, lipids, etc, are also present in the plasma as they are always in transit in the body.

    How many statements are correct for resting state of axon ? i. The axoplasm inside the axon contains high concentration of K^(+) and negatively charged proteins and low concentration of Na^(+) ii. In contract, the fluid outside the axon contains a low concentration of K^(+) , is high concentration of Na^(+) and thus form a concentration gradient. iii. The outer surface of the axonal membrane possesses a positive charge while its inner surface becomes negatively charged. iv. The electrical potential difference across the resting plasma membrane is called an the resting potential. v. Resting stage is depolarised state vi. Resting potential is positive potential

    Go through the following statements regarding the disorders of the digestive system. Choose the correct statements and select appropriate option from the codes given below. I. Indigestion is caused by the poor supply of digestive enzymes, overeating, anxiety and a lot of junk food. II. Constipation, an irregular movment of bowel is caused due to poor habits, fibreless diet, emotional stress and certain drugs. III. Indigestion can be caused by milk of magnesis. IV. Ejectino of stomah content is controlled by hypothalamus of prosencephalon.

    Home
    Profile