Tag: zoology

Questions Related to zoology

Cellular respiration is

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Continuous

  2. Intermittent

  3. Performed at intervals

  4. Held when energy is required

Show answer
Correct Option: A
Explanation:

Cellular respiration is a continuous process of oxidation of food to produce energy. The energy produced is utilized by human beings to carry out all the life processes such as digestion, excretion, circulation etc. Since these are continuous processes and do not stop, so they require continuous energy. If the energy is produced intermittently it will slow down these processes and affect the individual. 

Thus, the correct answer is option A. 

The rate at which oxygen moves from the alveoli of our lungs into our blood

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Depends on the difference in oxygen concentration between the alveoli and the blood.

  2. Depends on the color of the alveoli.

  3. Depends on the availability of energy to transport gases across the membrane.

  4. None of the above.

Show answer
Correct Option: A
Explanation:

The rate at which oxygen moves from the alveoli of our lungs into our blood depends on the difference in oxygen concentration between the alveoli and the blood. More is the oxygen absorbed by our lungs, more is it utilized by body muscles.

During respiration, exchange of gases takes place in

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Trachea and Larynx

  2. Alveoli of lungs

  3. Alveoli and throat

  4. Throat and Larynx

Show answer
Correct Option: B
Explanation:

Alveoli are tiny sacs from the bronchiolar extensions within our lungs that allow oxygen and carbon dioxide to move between the lungs and bloodstream. 

Utilization of $O _2$ by the cells to derive energy from nutrients for performing various activities and resultant release of $CO _2$ as by-produced is called

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Breathing

  2. Cellular respiration

  3. Pulmonary ventilation

  4. Fermentation

Show answer
Correct Option: A,B,C
Explanation:
 Name of the process  By-product
 Breathing   CO2
 Cellular respiration   CO2 + H2O+ 38 ATP
 Pulmonary ventilation  Commonly known as breathing, so as breathing the by-product is  CO2
 Fermentation(takes place in anaerobic condition) Ethanol + CO2 (alcohol fermentation)Lactate (lactic acid fermentation).

So, the correct answer is 'Breathing', 'Cellular respiration' and 'Pulmonary ventilation'.

Descending aorta and pulmonary trunks are

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Muscular arteries

  2. Medium arteries

  3. Elastic arteries

  4. Arterioles major

Show answer
Correct Option: C
Explanation:

Descending aorta and pulmonary trunks are elastic arteries and are quite distensible.

The respiratory centers, which control inspiration and expiration, are located in?

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Diencephalon

  2. Medulla oblongata

  3. Cerebellum

  4. Spinal cord

Show answer
Correct Option: A

Air is breathed through

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Trachea $\rightarrow$ lungs $\rightarrow$ larynx $\rightarrow$ pharynx $\rightarrow$ alveoli

  2. Nose $\rightarrow$ larynx $\rightarrow$ pharynx $\rightarrow$ bronchus $\rightarrow$ alveoli $\rightarrow$ bronchioles

  3. Nostril $\rightarrow$ pharynx $\rightarrow$ larynx $\rightarrow$ trachea $\rightarrow$ bronchi $\rightarrow$ bronchioles $\rightarrow$ alveoli

  4. Nose $\rightarrow$ mouth $\rightarrow$ lungs

Show answer
Correct Option: C
Explanation:

In humans respiratory system consists of respiratory tract (conducting zone) and lungs (exchange zone). The respiratory tract is the passage from external nostrils to lungs or a passage by which air enters into lungs. The respiratory passage starting from external nostrils is nasal chamber --> internal nares --> nasopharynx -->pharynx --> glottis --> larynx --> trachea --> bronchial tree (bronchi and bronchioles) --> alveoli.

In fever breathing rate

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Increase

  2. Decrease

  3. Stop

  4. None of the above

Show answer
Correct Option: A
Explanation:

Normal body temperature is around $37^0$C. Fever happens when the body's temperature is higher than normal because of an infection. Fever causes an increase in the heart rate, breathing rate and blood circulation to the skin. This is how the body tries to reduce the heat caused by fever. 

Which energy is consumed in breathing?

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Mechanical

  2. Chemical

  3. Bioelectricity

  4. Physical energy

Show answer
Correct Option: B
Explanation:

In breathing or cellular respiration, a set of metabolic reactions and processes take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products. The reactions involved in respiration are catabolic reactions, which break large molecules into smaller ones, releasing energy. Respiration is one of the key ways a cell gains useful energy to fuel cellular activity. Cellular respiration is considered an exothermic redox reaction which releases heat. The overall reaction occurs in a series of biochemical steps, most of which are redox reactions themselves.

Therefore, the correct answer is option B.

Breathing by ribs is more pronounced in

zoology respiratory system phases in respiration human respiratory system parts of respiration

  1. Male

  2. Female

  3. Pregnant female

  4. None of the above

Show answer
Correct Option: C
Explanation:

During the third trimester, as the uterus continues to grow, it puts pressure on the internal organs and the diaphragm, which in turns restricts the amount of room available for lungs and leads to shortness of breath. So breathing by ribs is more pronounced during pregnancy, as it slightly raises the rib cage and temporarily gives more breathing space to lungs making breathing little easier.