What are the functions of autocrine hormones?

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 posterior pituitary gland is not a 'true' endocrine gland because

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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?

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?

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

The amino acid tryptophan is the precursor for the synthesis of:

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?

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?

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 hormones with the respective disease:

	Column – I		Column – II
$\left(\mathrm{a}\right)$	Insulin	$\left(\mathrm{i}\right)$	Addison’s disease
$\left(\mathrm{b}\right)$	Thyroxin	$\left(\mathrm{i}\mathrm{i}\right)$	Diabetes insipidus
$\left(\mathrm{c}\right)$	Corticoids	$\left(\mathrm{i}\mathrm{i}\mathrm{i}\right)$	Acromegaly
$\left(\mathrm{d}\right)$	Growth Hormone	$\left(\mathrm{i}\mathrm{v}\right)$	Goitre
		$\left(\mathrm{v}\right)$	Diabetes mellitus

Select the correct option

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?

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?

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

Select option with correctly matched pairs for Column - I and Column - II.

	Column - I		Column - II
i)	Juxtaglomerular cells	a)	Somatostatin
ii)	$\beta$-cells of the pancreas	b)	Glucagon
iii)	$\alpha$-cells of the pancreas	c)	Erythropoietin
iv)	Delta cells of the pancreas	d)	Insulin

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?

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

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

How dose steroid hormone influence the cellular activities?

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

Tidal Volume and Expiratory Reserve Volume of an athlete is 500 mL and 1000 mL respectively. What will be his Expiratory Capacity if the Residual Volume is 1200 mL?

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

Which of the following pairs of hormones are not antagonistic (having opposite effects) to each other?

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

Name the organ which secrete chemicals responsible for the regulation of the renin-angiotensin mechanism?