biology 3201 - weebly · page 1 of 20 biology 3201 old public exam questions august 2004 – august...

of 20

Biology 3201

Old Public Exam Questions

August 2004 – August 2009

KEY

Unit 1 – The Nervous System

of 20

MULTIPLE CHOICE QUESTIONS

AUGUST 2009 1. Which part of the nervous system is made up of the brain and spinal cord?

(A) central (B) parasympathetic (C) peripheral (D) sympathetic

2. Which structure protects the brain?

(A) hypothalamus (B) medulla (C) meninges (D) pons

3. Which structure directly controls a person’s ability to think about a question and answer it correctly?

(A) A (B) B (C) C (D) D

4. Which describes the movement of ions by the sodium-potassium pump?

(A) less sodium out than potassium in (B) more sodium out than potassium in (C) same sodium in as potassium out (D) same sodium out as potassium in

5. What type of compounds are acetylcholine and dopamine? (A) depressants (B) neurotransmitters (C) poisonous drugs (D) stimulants

of 20

6. A researcher used electrical stimulation of a neuron to cause a response in muscle

tissue and collected the data below. What can be concluded from this experiment? A

7. The diagram below shows portions of two neurons in a person’s brain. If a stimulus has reached the synapse, which is most likely represented by X?

(A) acetylcholine (B) cholinesterase (C) dopamine (D) norepinephrine

of 20

8. Which drug is classified as a depressant? (A) alcohol (B) caffeine (C) ecstasy (D) nicotine

9. What is the correct order of the path of light through the eye? B

10. Which part of the eye contains rods and cones?

(A) A (B) B (C) C (D) D

AUGUST 2008 1. Which is the series of three membranes that surround and protect the central nervous system?

(A) corpus callosum (B) meninges (C) skull (D) spinal cord

of 20

2. Which takes information from sense organs and brings it to the central nervous system?

(A) autonomic (B) interneuron (C) motor neuron (D) sensory neuron

3. Which is the most common inhibiting neurotransmitter of the brain?

(A) GABA (B) glutamate (C) noradrenaline (D) serotonin

4. Which action tests for the Babinski reflex?

(A) drawing a pointy object across the knee cap (B) drawing a pointy object across the sole of the foot (C) striking the tendon below the knee cap (D) striking the tendon on back of the foot

5. During a frightening situation, which nervous system and endocrine gland work

together to cause a body reaction? C

6. Which occurs if a dendrite is blocked from allowing the uptake of sodium ions?

(A) Acetylcholine will not produce an action potential. (B) Cholinesterase will not be released into the synapse. (C) Dopamine levels will rise in the skeletal muscles. (D) Glutamate concentrations will be greater in the cerebral cortex.

of 20

7. The graph below shows a neuron following stimulation. Which ion is represented at point B?

(A) calcium (B) chloride (C) potassium (D) sodium

8. Which medical technology would most likely be used to diagnose a patient suspected to have a cancerous tumour on their lung?

(A) CAT (B) EEG (C) EKG (D) MRI

9. Which part of the human eye contains the rods and the cones?

(A) cornea (B) iris (C) pupil (D) retina

10. Which vision disorder cannot be improved by wearing corrective lenses?

(A) astigmatism (B) glaucoma (C) hyperopia (D) myopia

11. Which carries vibrations through the middle ear?

(A) auditory canal (B) cochlea (C) ossicles (D) pinna

of 20

12. Which structure allows air pressure to equalize?

(A) A (B) B (C) C (D) D

AUGUST 2007

1. What part of a neuron carries nerve impulses towards the cell body?

(A) axon

(B) dendrite

(C) myelin sheath

(D) Schwann cell

2. Which statement best illustrates homeostasis?

(A) A constant internal environment is maintained regardless of external change.

(B) Eyes, ears and nose provide information about the external environment.

(C) Sensory receptors provide data about whether the body is gaining or losing heat.

(D) The internal environment of an organism is the same as the external environment.

3. Which structure below controls balance?

(A) A (B) B (C) C (D) D

of 20

4. Which structure below insulates the neuron?

(A) A (B) B (C) C (D) D

5. Which occurs immediately after an action potential?

(A) all or none response

(B) refractory period

(C) resting potential

(D) threshold

6. Which sequence occurs after an individual touches a hot object?

(A) receptor → interneuron → motor neuron → sensory neuron → effector

(B) receptor → interneuron → sensory neuron → motor neuron → effector

(C) receptor → sensory neuron → interneuron → motor neuron → effector

(D) receptor → sensory neuron → motor neuron → interneuron → effector

7. Which is the correct match for a decrease in neurotransmitter production and the disease

that results? B

of 20

8. Which technology measures the electrical activity of the functioning brain and can be

used to diagnose epilepsy?

(A) CAT

(B) EEG

(C) MRI

(D) PET

9. Which structure below regulates the amount of light that enters the eye?

(A) A (B) B (C) C

(D) D

10. Which part of the human ear contains hair cells?

(A) auditory tube

(B) cochlea

(C) ossicles

(D) semicircular canals

AUGUST 2006

1. Damage to which structure below would result in the heart stopping?

(A) A

(B) B (C) C (D) D

of 20

2. Which nervous system division is directly responsible for relaying information to and

from the skeletal muscles?

(A) autonomic

(B) parasympathetic

(C) somatic

(D) sympathetic

3. In which order does an impulse pass through a reflex arc? D

4. Which structure below is responsible for receiving information from another neuron?

(A) A (B) B (C) C (D) D

5. Which shows the ion distribution inside the neuron membrane during an action potential? C

of 20

6. Which best describes the role of cholinesterase?

(A) breaking down a neurotransmitter

(B) inhibiting a post-synaptic neuron

(C) stimulating a post-synaptic neuron

(D) synthesizing a neurotransmitter

7. Which nervous system disorder is caused by low dopamine production?

(A) Alzheimer’s

(B) Meningitis

(C) Multiple Sclerosis

(D) Parkinson’s

8. Which technology would produce a 3-D image of the brain?

(A) CAT Scan

(B) EEG

(C) PET Scan

(D) X-ray

9. Which structure of the eye enables a person to see in low light situations?

(A) cones

(B) cornea

(C) rods

(D) sclera

10. Which structure below allows air pressure to equalize?

(A) A (B) B (C) C

(D) D

of 20

AUGUST 2005

1. Which refers to the maintenance of a relatively constant internal environment?

(A) equilibrium

(B) homeostasis

(C) negative feedback

(D) positive feedback

2. Which work together to respond to emergency situations?

(A) parasympathetic nervous system and adrenaline

(B) parasympathetic nervous system and glutamate

(C) sympathetic nervous system and adrenaline

(D) sympathetic nervous system and glutamate

3. Which structure is part of the parasympathetic nervous system?

(A) brain

(B) meninges

(C) sensory nerves

(D) spinal cord

4. Which statement about neurons is true?

(A) Potassium ions move inside the axon during depolarization.

(B) Potassium ions move outside the axon during depolarization.

(C) The inside of the cell is negatively charged at rest.

(D) The outside of the cell is negatively charged at rest.

5. From which structure below does the cell body collect information?

(A) A

(B) B

(C) C

(D) D

of 20

6. The ability to understand and answer questions is controlled by which structure of the

brain?

(A) cerebellum

(B) cerebrum

(C) hypothalamus

(D) medulla oblongata

7. The graph below shows the distance a nerve impulse travelled over time for two different

neurons (X and Y). What conclusion can best be drawn from the graph?

(A) X is influenced by an anaesthetic and Y is influenced by caffeine.

(B) X is myelinated and Y is unmyelinated.

(C) Y is influenced by an anaesthetic and X is influenced by caffeine.

(D) Y is myelinated and X is unmyelinated.

8. Which would best describe the effect of a drug used to treat chronic tremors and stiffness

in limbs?

(A) decreases autoimmune activity

(B) decreases dopamine levels

(C) increases autoimmune activity

(D) increases dopamine levels

9. Which technology uses large magnets and computers to generate detailed images?

(A) CAT scan

(B) EEG

(C) MRI

(D) PET scan

10. Which condition is caused by the buildup of fluid between the lens and cornea?

(A) astigmatism

(B) glaucoma

(C) hyperopia

(D) myopia

of 20

11. What is the order of structures through which sound waves travel into the human ear? A

12. In which structure of the human ear does an imbalance result in motion sickness?

(A) auditory canal

(B) eustachian tube

(C) semicircular canal

(D) tympanic membrane

AUGUST 2004

1. In which direction does an action potential normally travel along an axon?

(A) away from the cell body

(B) away from the synapse

(C) from myelin to dendrites

(D) from myelin to nucleus

2. What initiates the action potential in a nerve?

(A) influx of calcium ions into the axon

(B) influx of sodium ions into the axon

(C) outflow of calcium ions from the axon

(D) outflow of sodium ions from the axon

3. Which ear structure maintains balance?

(A) cochlea

(B) malleus

(C) semicircular canals

(D) tympanic membrane

4. What distinguishes target cells from other cells?

(A) amount of cellulose in cell membrane

(B) amount of phospholipids in cell membrane

(C) hormone-specific cell surface receptors

(D) hormone-specific cytoplasmic receptors

5. Which gland produces and releases a thyroid-stimulating hormone?

(A) anterior pituitary

(B) hypothalamus

(C) posterior pituitary

(D) thyroid

of 20

6. What causes giantism?

(A) overproduction of human growth hormone

(B) overproduction of insulin

(C) underproduction of human growth hormone

(D) underproduction of insulin

7. Which term best describes the actions of adrenaline and noradrenaline?

(A) antagonistic

(B) complementary

(C) negative feedback

(D) positive feedback

8. Which disorder affects the movement of skeletal muscles due to a dopamine deficiency?

(A) Alzheimer’s

(B) Huntingon’s

(C) Multiple Sclersosis

(D) Parkinson’s

9. Which part of the eye is responsible for absorbing light and preventing internal

reflection?

(A) choriod

(B) cornea

(C) iris

(D) retina

10. Which part of the brain controls movement that is an automatic, involuntary reaction to a

stimulus?

(A) cerebellum

(B) cerebrum

(C) hypothalamus

(D) thalamus

11. What effect does a somatic nervous system stimulant have on the human body?

(A) decreases the sensitivity of the postsynaptic membrane to acetylcholine

(B) increases the sensitivity of the postsynaptic membrane to acetylcholine

(C) makes the membrane permanently impermeable to potassium

(D) makes the membrane permanently impermeable to sodium

of 20

SHORT ANSWER QUESTIONS

AUGUST 2009

AUGUST 2008

of 20

AUGUST 2007

of 20

AUGUST 2006

AUGUST 2005

NO QUESTIONS

of 20

AUGUST 2004

biology 3201 - weebly · page 1 of 20 biology 3201 old public exam questions august 2004 – august...

Documents