Test
Quiz 1a
Preguntas del test (30)
1A drug that blocks the effects of a neurotransmitter is a(n) ____; a drug that mimics or increases the effects is a(n) ____.
- ANeuromodulator; synergist
- BDepressant; stimulant
- CAgonist; antagonist
- DAntagonist; agonist
2A person with two recessive genes is considered to be ___ for that trait:
- AMarginal
- BUnitary
- CHeterozygous
- DHomozygous
3A trait not expressed when combined with a dominant trait is call a(n) ___ trait.
- ANurture
- BRecessive
- CDominant
- DHomozygous
4A(n) ____ explanation describes eating in terms of the hypothalamus affecting insulin production, which affects the availability of glucose in cells.
- APhysiological
- BEvolutionary
- COntogentic
- DFunctional
5Chemically, what is the route from genes to their expression?
- ADNA to RNA to proteins
- BProteins to DNA to RNA
- CRNA to DNA to proteins
- DDNA to proteins to RNA
6Exocytosis is the process by which neurotransmitters are ___.
- ASynthesised
- BReuptaken into the presynaptic neuron
- CDestroyed
- DReleased from the presynaptic neuron
7Few 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?
- AMetabotropic effects
- BSecond messenger effects
- CNeuromodulator effects
- DIonotropic effects
8Human 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?
- APhysiological
- BEvolutionary
- CFunctional
- DOntogenetic
9In general, biologists who speak of sex-linked genes are typically referring to genes on ___.
- AThe X chromosome
- BThe Y chromosome
- CMore than one chromosome
- DAutosomal chromosomes
10In the context of the “three R’s” of animal research, refinement refers to ___.
- ARecognising potential confounders
- BReusing prior research analysis
- CRecombining effective statistical tests
- DReducing pain and discomfort
11Like an action potential, an EPSP results from:
- APotassium ions exiting the cell
- BPotassium ions entering the cell
- CSodium ions exiting the cell
- DSodium ions entering the cell
12Mapping out the relationship between shared bone structures across different species suggests there is a(n) ____ explanation.
- ABehavioural
- BPhysiological
- CEvolutionary
- DOntogentic
13Minimalists believe that:
- ANo animal research should be conducted
- BResearchers should only use small animals
- CSome animal research is acceptable, but not all
- DAll research should be done on animals
14Neurons typically have one __, but many __.
- ACell body; axons
- BDendrite; axons
- CAxon; dendrites
- DDendrite; cell bodies
15Neuropeptides are synthesised in the ___.
- APostsynaptic terminal
- BPresynaptic terminal
- CCell body
- DDendrites
16Nodes of Ranvier are ___.
- AGaps in the myelin of axons
- BSpiny outgrowths on dendrites
- CResponsible for cell metabolism
- DAlso known as myelin sheath
17Of the following, the most important consideration in developing a drug that will act in the brain is:
- AIf the drug will cross the blood-brain barrier
- BIf the drug can be inexpensively manufactured
- CThe number of people who will use the drug
- DHow long the drug will act
18Saltatory conduction ____ the velocity of action potentials and ____ the amount of energy used by the neuron.
- AIncreases; decreases
- BDecreases; increases
- CIncreases; increases
- DDecreases; decreases
19Suppose 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?
- AAll will be heterozygous for the ability to curl
- BAll will be homozygous for the inability to curl
- CAll will be homozygous for the ability to curl
- DThey may be homozygous or heterozygous for ability to curl, or homozygous for inability
20The brain area most often linked to drug addiction is the:
- ANucleus accumbens
- BBrain stem
- CFrontal lobes
- DWhole limbic system
21The correct sequence of chemical events at a synapse is:
- AReuptake, release, transport, synthesis
- BTransport, release, reuptake, synthesis
- CSynthesis, transport, release, reuptake
- DRecycle, reuse, release, return
22The presynaptic terminal stores high concentrations of neurotransmitter molecules in:
- ADendrites
- BVesicles
- CPeptides
- DAxons
23The structure that contains the chromosomes is called the:
- AEndoplasmic reticulum
- BNucleus
- CMitochondrion
- DRibosome
24The surface of a dendrite is lined with specialised junctions through which the dendrite receives information from other neurons. What are these junctions called?
- AAxons
- BSynaptic hillocks
- CGlia
- DSynaptic receptors
25Compared to ionotropic effects, metabotropic effects are:
- Aquicker and briefer
- Bslower and longer lasting
- Cslower and briefer
- Dquicker and longer lasting
26What is the primary difference between temporal summation and spatial summation?
- ATemporal summation produces a hyperpolarization instead of a depolarization
- BOnly spatial summation can produce an action potential
- CSpatial summation alters the response of more than one postsynaptic cell
- DSpatial summation depends on contributions from more than one sensory neuron
27What is the result if a stimulus shifts the potential inside a neuron from the resting potential to a more negative potential?
- ADepolarization
- BAn action potential
- CHyperpolarization
- DA threshold
28Where do the metabolic activities occur that provide energy for all of the other activities of the cell?
- AMitochondria
- BRibosomes
- CLysosomes
- DGolgi complexes
29Which of the following is TRUE of local neurons?
- AThey exchange information with distant neurons
- BThey abide by the all-or-nothing principle
- CThe change in membrane potential increases as it travels
- DThey produce graded potentials
30Which type of glia builds myelin sheaths around axons in the periphery of the body?
- AAstrocytes
- BSchwann cells
- CRadial glia
- DOligodendrocytes
Información
- Descripción
- Weeks 01 - 03
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- S E
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- English
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