MEDIUM
Earn 100

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 center which is highly sensitive to O2, CO2, and hydrogen ions.

III. Receptors associated with aortic arch and carotid artery also can recognize changes in CO2 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.

100% studentsanswered this correctly

Important Questions on Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.

EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
The rigidity of cellulose is due to:
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
The amino acid tryptophan is the precursor for the synthesis of:
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which one of the following hormones is not involved in sugar metabolism?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
The posterior pituitary gland is not a 'true' endocrine gland because
HARD
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which of the following shows chemoreceptors for respiration?
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which of these is not an important component of initiation of parturition in humans?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which one of the following hormones though synthesized elsewhere, is stored and release by the master gland?
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Three uniformly watered plants i, ii and iii were kept in 45% relative humidity, 45% relative humidity with blowing wind and 95% relative humidity, respectively. Arrange these plants in the order (faster to slowest) in which they will dry up.
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Describe the regulation of respiration in humans.
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
How is respiratory movements regulated in man?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Name a peptide hormone which acts mainly on hepatocytes and adipocytes and enhances cellular glucose uptake and utilisation.
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system

Match the following columns and select the correct option:-

Column-I Column-II
(a) Pneumotaxic centre (i) Alveoli
(b) O2 Dissociation curve (ii) Pons region of the brain
(c) Carbonic anhydrase (iii) Haemoglobin
(d) Primary site of exchange of gases (iv) RBC
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which of the following hormones that controls blood pressure is secreted by human heart?
HARD
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which one of the following statements is incorrect?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Oxytocin and vasopressin are synthesized in
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Hypersecretion of Growth Hormone in adults does not cause a further increase in height, because
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
A diabetic individual becomes unconscious after self-administering insulin. What should be done immediately to revive the individual?
MEDIUM
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?
EASY
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
 State the significance of respiration.
HARD
Life Sciences>From Molecules to Organisms: Structures and Processes>Plan and conduct an investigation to provide evidence that feedback mechanisms maintain homeostasis.>Structure and Function - Feedback mechanisms maintain a living system’s internal conditions within certain limits and mediate behaviors, allowing it to remain alive and functional even as external conditions change within some range. Feedback mechanisms can encourage (through positive feedback) or discourage (negative feedback) what is going on inside the living system
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?