All Free Psychology MCQs with Answers
Every Psychology question in the bank, across all chapters, each with the correct answer and a written explanation. Free and unlimited, with no account needed.
3,519 questions · page 91 of 176
- A. Follicle stimulating hormone
- B. Luteinizing hormone
- C. Prolactin
- D. None of these
Explanation: Prolactin is sometimes called luteotropic hormone because, in addition to supporting lactation, it can help maintain the corpus luteum and…
Correct answer: Prolactin1802. One of the following hormones is named interstitial cell stimulating hormone (ICSH) in the males:
- A. Follicle stimulating hormone
- B. Luteinizing hormone
- C. Prolactin
- D. None of these
Explanation: In males, LH is also called interstitial cell-stimulating hormone because it stimulates the Leydig cells between the seminiferous tubules…
Correct answer: Luteinizing hormone- A. Follicle stimulating hormone
- B. Luteinizing hormone
- C. Prolactin
- D. Adrenocorticotropic hormone
Explanation: FSH stimulates ovarian follicles, whose granulosa cells produce estrogen during follicular development.
Correct answer: Follicle stimulating hormone1804. One of the followings stimulates the interstitial cells of testes in males to secrete testosterone:
- A. Follicle stimulating hormone
- B. Luteinizing hormone
- C. Prolactin
- D. Vasopressin
Explanation: LH, also called interstitial cell-stimulating hormone in males, acts on the Leydig cells between the seminiferous tubules to promote…
Correct answer: Luteinizing hormone- A. Formation of kidney stones
- B. Demineralization of bones
- C. Diabetes mellitus
- D. Both a & b
Explanation: Excess parathyroid hormone raises blood calcium by removing calcium from bone and increasing its release through the kidneys, which can…
Correct answer: Both a & b- A. Thyroid gland
- B. Islets of Langerhans
- C. Adrenals
- D. Gonads
Explanation: The islets of Langerhans regulate blood glucose directly, especially through insulin and glucagon, while their activity is also influenced…
Correct answer: Islets of Langerhans- A. Exophthalmic goiter
- B. Increase in basal metabolic rate
- C. Enlargement of body parts
- D. Both a & b
Explanation: Graves disease commonly produces exophthalmic goiter, in which the eyes protrude, and an elevated basal metabolic rate due to excess…
Correct answer: Both a & b- A. Thyroxine
- B. Tri-iodothyronine (T3)
- C. Calcitonin
- D. Both a & b
Explanation: Both thyroxine, or T4, and triiodothyronine, or T3, increase metabolic activity by promoting glucose breakdown, oxygen use, ATP…
Correct answer: Both a & b- A. Somatotropin (STH)
- B. Thyroid stimulating hormone
- C. Gonadotrophic hormone
- D. Adrenocorticotrophic hormone
Explanation: Stress activates the hypothalamus-pituitary-adrenal axis, causing the pituitary to release ACTH, which stimulates the adrenal cortex.
Correct answer: Adrenocorticotrophic hormone- A. Thyroid gland
- B. Pancreas
- C. Parathyroids
- D. Adrenals
Explanation: Thyroid secretion rises during growth and sexual maturation and helps the body respond metabolically to cold and hunger.
Correct answer: Thyroid gland- A. Whitening of skin
- B. Darkening of skin
- C. Spotting of skin
- D. All of the above
Explanation: Addison's disease causes adrenal insufficiency, which increases ACTH and related melanocortin activity; this produces hyperpigmentation or…
Correct answer: Darkening of skin- A. Epilepsy
- B. Alzheimer's disease
- C. Parkinson's disease
- D. Addison's disease
Explanation: In Addison's disease, low cortisol removes negative feedback, so pituitary pro-opiomelanocortin products, including melanocyte-stimulating…
Correct answer: Addison's disease- A. Na+ and K+ ion movement
- B. Membrane potential
- C. Reversal of charges
- D. All of the above
Explanation: An action potential involves movement of sodium and potassium ions, a change in membrane potential, and reversal of the membrane's charge…
Correct answer: All of the above- A. Spinal cord
- B. Sensory neurons
- C. Motor neurons
- D. Diffused nervous system
Explanation: The spinal cord carries messages between the brain and the body and contains reflex centres that can produce rapid responses without first…
Correct answer: Spinal cord- A. diffused nervous system
- B. Peripheral nervous system
- C. Sensory nervous system
- D. Motor nervous system
Explanation: The peripheral nervous system includes all neural structures outside the brain and spinal cord, carrying signals between the central…
Correct answer: Peripheral nervous system- A. Threshold stimulus
- B. Active membrane potential
- C. Resting membrane potential
- D. All of the above
Explanation: A threshold stimulus is the minimum effective stimulation needed to initiate a nerve impulse.
Correct answer: Threshold stimulus- A. Resting membrane potential
- B. Threshold stimulus
- C. Active membrane potential
- D. None of these
Explanation: During the active or action potential, ion movement reverses the usual charge arrangement so the inside briefly becomes more positive than…
Correct answer: Active membrane potential- A. Action potential
- B. Resting potential
- C. Threshold potential
- D. None of these
Explanation: The brief reversal of charge across a stimulated neuron's membrane is an action potential.
Correct answer: Action potential- A. Membrane potential
- B. Resting membrane potential
- C. Nerve impulse
- D. Electron pump
Explanation: A nerve impulse is the travelling wave of electrical and chemical changes produced by ion movement across the neuron's membrane.
Correct answer: Nerve impulse- A. 0.05
- B. 0.07
- C. 0.05 to 0.07
- D. 1
Explanation: A neuron at rest typically has a membrane potential of about −0.07 volts, or −70 millivolts, with the inside negative relative to the…
Correct answer: 0.07