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Weeks 01 - 03

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Quiz 1a

Question 1 of 30

1

A drug that blocks the effects of a neurotransmitter is a(n) ____; a drug that mimics or increases the effects is a(n) ____.

Select one of the following:

  • Neuromodulator; synergist

  • Depressant; stimulant

  • Agonist; antagonist

  • Antagonist; agonist

Explanation

Question 2 of 30

1

A person with two recessive genes is considered to be ___ for that trait:

Select one of the following:

  • Marginal

  • Unitary

  • Heterozygous

  • Homozygous

Explanation

Question 3 of 30

1

A trait not expressed when combined with a dominant trait is call a(n) ___ trait.

Select one of the following:

  • Nurture

  • Recessive

  • Dominant

  • Homozygous

Explanation

Question 4 of 30

1

A(n) ____ explanation describes eating in terms of the hypothalamus affecting insulin production, which affects the availability of glucose in cells.

Select one of the following:

  • Physiological

  • Evolutionary

  • Ontogentic

  • Functional

Explanation

Question 5 of 30

1

Chemically, what is the route from genes to their expression?

Select one of the following:

  • DNA to RNA to proteins

  • Proteins to DNA to RNA

  • RNA to DNA to proteins

  • DNA to proteins to RNA

Explanation

Question 6 of 30

1

Exocytosis is the process by which neurotransmitters are ___.

Select one of the following:

  • Synthesised

  • Reuptaken into the presynaptic neuron

  • Destroyed

  • Released from the presynaptic neuron

Explanation

Question 7 of 30

1

Few pianists can play quickly enough to play the Minute Waltz in a minute. The finger movements that are required are likely to involve which type of neurotransmitter effects?

Select one of the following:

  • Metabotropic effects

  • Second messenger effects

  • Neuromodulator effects

  • Ionotropic effects

Explanation

Question 8 of 30

1

Human language developed as the result of genes and the opportunity to hear language during a sensitive period in early life. What type of explanation is this?

Select one of the following:

  • Physiological

  • Evolutionary

  • Functional

  • Ontogenetic

Explanation

Question 9 of 30

1

In general, biologists who speak of sex-linked genes are typically referring to genes on ___.

Select one of the following:

  • The X chromosome

  • The Y chromosome

  • More than one chromosome

  • Autosomal chromosomes

Explanation

Question 10 of 30

1

In the context of the “three R’s” of animal research, refinement refers to ___.

Select one of the following:

  • Recognising potential confounders

  • Reusing prior research analysis

  • Recombining effective statistical tests

  • Reducing pain and discomfort

Explanation

Question 11 of 30

1

Like an action potential, an EPSP results from:

Select one of the following:

  • Potassium ions exiting the cell

  • Potassium ions entering the cell

  • Sodium ions exiting the cell

  • Sodium ions entering the cell

Explanation

Question 12 of 30

1

Mapping out the relationship between shared bone structures across different species suggests there is a(n) ____ explanation.

Select one of the following:

  • Behavioural

  • Physiological

  • Evolutionary

  • Ontogentic

Explanation

Question 13 of 30

1

Minimalists believe that:

Select one of the following:

  • No animal research should be conducted

  • Researchers should only use small animals

  • Some animal research is acceptable, but not all

  • All research should be done on animals

Explanation

Question 14 of 30

1

Neurons typically have one __, but many __.

Select one of the following:

  • Cell body; axons

  • Dendrite; axons

  • Axon; dendrites

  • Dendrite; cell bodies

Explanation

Question 15 of 30

1

Neuropeptides are synthesised in the ___.

Select one of the following:

  • Postsynaptic terminal

  • Presynaptic terminal

  • Cell body

  • Dendrites

Explanation

Question 16 of 30

1

Nodes of Ranvier are ___.

Select one of the following:

  • Gaps in the myelin of axons

  • Spiny outgrowths on dendrites

  • Responsible for cell metabolism

  • Also known as myelin sheath

Explanation

Question 17 of 30

1

Of the following, the most important consideration in developing a drug that will act in the brain is:

Select one of the following:

  • If the drug will cross the blood-brain barrier

  • If the drug can be inexpensively manufactured

  • The number of people who will use the drug

  • How long the drug will act

Explanation

Question 18 of 30

1

Saltatory conduction ____ the velocity of action potentials and ____ the amount of energy used by the neuron.

Select one of the following:

  • Increases; decreases

  • Decreases; increases

  • Increases; increases

  • Decreases; decreases

Explanation

Question 19 of 30

1

Suppose both the father and the mother are "heterozygous" for the gene that controls ability to curl the tongue lengthwise, and this gene is dominant. What can we predict about their children?

Select one of the following:

  • All will be heterozygous for the ability to curl

  • All will be homozygous for the inability to curl

  • All will be homozygous for the ability to curl

  • They may be homozygous or heterozygous for ability to curl, or homozygous for inability

Explanation

Question 20 of 30

1

The brain area most often linked to drug addiction is the:

Select one of the following:

  • Nucleus accumbens

  • Brain stem

  • Frontal lobes

  • Whole limbic system

Explanation

Question 21 of 30

1

The correct sequence of chemical events at a synapse is:

Select one of the following:

  • Reuptake, release, transport, synthesis

  • Transport, release, reuptake, synthesis

  • Synthesis, transport, release, reuptake

  • Recycle, reuse, release, return

Explanation

Question 22 of 30

1

The presynaptic terminal stores high concentrations of neurotransmitter molecules in:

Select one of the following:

  • Dendrites

  • Vesicles

  • Peptides

  • Axons

Explanation

Question 23 of 30

1

The structure that contains the chromosomes is called the:

Select one of the following:

  • Endoplasmic reticulum

  • Nucleus

  • Mitochondrion

  • Ribosome

Explanation

Question 24 of 30

1

The surface of a dendrite is lined with specialised junctions through which the dendrite receives information from other neurons. What are these junctions called?

Select one of the following:

  • Axons

  • Synaptic hillocks

  • Glia

  • Synaptic receptors

Explanation

Question 25 of 30

1

Compared to ionotropic effects, metabotropic effects are:

Select one of the following:

  • quicker and briefer

  • slower and longer lasting

  • slower and briefer

  • quicker and longer lasting

Explanation

Question 26 of 30

1

What is the primary difference between temporal summation and spatial summation?

Select one of the following:

  • Temporal summation produces a hyperpolarization instead of a depolarization

  • Only spatial summation can produce an action potential

  • Spatial summation alters the response of more than one postsynaptic cell

  • Spatial summation depends on contributions from more than one sensory neuron

Explanation

Question 27 of 30

1

What is the result if a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?

Select one of the following:

  • Depolarization

  • An action potential

  • Hyperpolarization

  • A threshold

Explanation

Question 28 of 30

1

Where do the metabolic activities occur that provide energy for all of the other activities of the cell?

Select one of the following:

  • Mitochondria

  • Ribosomes

  • Lysosomes

  • Golgi complexes

Explanation

Question 29 of 30

1

Which of the following is TRUE of local neurons?

Select one of the following:

  • They exchange information with distant neurons

  • They abide by the all-or-nothing principle

  • The change in membrane potential increases as it travels

  • They produce graded potentials

Explanation

Question 30 of 30

1

Which type of glia builds myelin sheaths around axons in the periphery of the body?

Select one of the following:

  • Astrocytes

  • Schwann cells

  • Radial glia

  • Oligodendrocytes

Explanation

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