Archives: Quiz

In the formation of acetic acid from pyruvic acid, the oxygen in the carbon dioxide comes from oxygen gas. Gastric hydrochloric acid secretion is regulated through both negative and positive feedback mechanisms. Answer: TRUE The charge difference across a membrane […]

B lymphocytes are responsible for cell-mediated immunity. The primarily hydrophilic leader sequence of secretory proteins allows it to be inserted into the cisterna of the endoplasmic reticulum. Answer: FALSE[/cpmembership] Pseudopods can be used for both amoeboid movement and phagocytosis. Answer: […]

Ablation of the red nucleus prevents communication between the cerebrum and cerebellum and thereby enhances normal motor function. Moderate exercise causes increased visceral organ blood flow. Answer: FALSE Astrocytes can be excited by changes in intracellular Ca2+ concentration. Answer: TRUE […]

The body’s adipostat works in a negative feedback way to maintain adipose tissue to keep you from losing weight. Nociceptors relay sensory information to the cortex via the lateral spinothalamic tract. Answer: TRUE Carbohydrate molecules have a ratio of twice […]

The cerebellar influence on motor activity is excitatory. Cholesterol and AIDS viruses are taken into cells by receptor-mediated endocytosis. Answer: TRUE Autonomic motor pathways utilize two neurons while somatic motor pathways utilize one neuron. Answer: TRUE The guarding reflex prevents […]

FSH is necessary for spermiogenesis to occur. Primary cilia may serve sensory functions such as vision. Answer: TRUE Isoenzymes bind different substrates and catalyze different chemical reactions. Answer: FALSE[/cpmembership] Prolactin injections may be used to induce labor. Answer: Answer: FALSE[/cpmembership] […]

Which activity is increased by the sympathetic nervous system? a. Salivation b. Heart rate c. Digestive activity d. Body temperature In one study, women in the follicular phase, when the probability of becoming pregnant is greatest, preferred male faces that […]

Pregnant women often experience nausea because of the heightened activity of the ____ receptor. a. serotonin 3 b. progesterone c. estradiol d. dopamine 2 Longer stimulation (1/2 sec) of the arm region of a monkey’s motor cortex results in: a. […]

Ischemia is to ____ as hemorrhage is to ____. a. older individuals; younger individuals b. proximal; distal c. obstruction; rupture d. barely noticeable; lethal Tryptophan enters the brain by an active-transport protein that it shares with ____ and other large […]

According to the Young-Helmholtz theory, what is the basis for color vision? a. a different receptor for each color b. three kinds of cones c. a single receptor that produces different responses for each color d. the combined influences of […]

Which of the following is TRUE of Huntington’s disease? a. There is a loss of dopamine neurons in the substantia nigra. b. The symptoms can be effectively treated. c. The earlier the onset, the more rapid the deterioration. d. It […]

People with damage to the parietal cortex appear to lack ____ related to voluntary movements. a. feelings of intention b. the ability to make conscious decisions c. a sense of timing d. muscle strength Studies on ____ help clarify the […]

The concentration of 5-HIAA in the blood, cerebrospinal fluid, or urine provides an estimate of: a. serotonin stores. b. serotonin turnover. c. dopamine stores. d. dopamine turnover. To what lobe of the cerebral cortex is auditory information sent? a. occipital […]

LeVay’s studies indicate a correlation between a man’s sexual orientation (homosexuality vs. heterosexuality) and the: a. amount of testosterone in the blood. b. amount of estradiol in the blood. c. size of one nucleus of the hypothalamus. d. size of […]

Which feature of a neuron limits the number of action potentials it can produce per second? a. the threshold b. the refractory period c. saltatory conduction d. the length of the axon One approach in minimizing stroke damage in laboratory […]

People with right-hemisphere damage have particular trouble with tasks that require: a. understanding sentences with a complex grammatical structure. b. spatial processing. c. control of the right hand. d. memory of recent events. A stimulus that resets the circadian rhythm […]

In order to elicit movement, the motor cortex: a. has direct connections to the muscles. b. sends axons to the brainstem and spinal cord. c. controls isolated movement in a single muscle. d. relies on feedback from individual muscle fibers. […]

As a general rule, where do axons convey information? a. toward dendrites of their own cell b. toward their own cell body c. away from their own cell body d. to surrounding glia People suffering from seasonal affective disorder are […]

Recent research findings suggest that compared to normal people, people with schizophrenia have: a. a greater amount of glutamate release. b. more glutamate receptors. c. fewer dopamine receptors. d. fewer glutamate receptors. Several studies have found that ____ is particularly […]

In the parasympathetic nervous system, the preganglionic fibers are _____, and the postganglionic fibers are _____. a. long, long b. long, short c. short, long d. short, short The two types of thirst are ____ and ____. a. osmotic thirst; […]

Damage to the left hemisphere is more likely than right hemisphere damage to impair which ability? a. understanding the meaning of language b. understanding that someone is joking when they speak c. producing facial expressions of emotion d. understanding other […]

At the synapse, amphetamine: a. blocks the breakdown of dopamine. b. increases the release of dopamine from the presynaptic terminal. c. increases the sensitivity of dopamine receptors. d. decreases the sensitivity of dopamine receptors. Under what conditions are the effects […]

People with full sized brains and normal intelligence: a. always have normal language. b. usually have normal language, but may not. c. have the greatest brain to IQ ratio. d. have the largest index fingers. Which brain area is active […]

Kin selection as an explanation for altruistic behavior would argue that: a. individuals help others who help them. b. individuals pick their mates based on how altruistic they are. c. individuals spread their genes by helping their relatives. d. society […]

Which of the following would most likely interfere with migration of neurons during development? a. altering the chemical paths b. damaging dendrites c. loss of myelin d. increased differentiation A scientist would be most likely to use which of the […]

Orlistat (Xenical) can reduce body weight by: a. increasing CCK release. b. increasing stomach distention. c. blocking serotonin reuptake. d. preventing absorption of fats. If we compare the receptive fields of two simple cells in the primary visual cortex, chosen […]

The temporal lobe of the cerebral cortex is the primary target for which kind of sensory information? a. somatosensory, including touch b. the simplest aspects of vision c. gustatory d. auditory When neuropeptide Y inhibits the paraventricular nucleus, it: a. […]

The scala tympani makes up part of the: a. tympanic membrane. b. middle ear. c. cochlea. d. ossicles. Each receptor responds to a wide range of stimuli and contributes to the perception of each of them. This type of coding […]

What is activated by the reticular formation? a. the spinal cord b. only those portions of the cerebral cortex involved in processing sensory information c. only subcortical structures in the brain stem and midbrain d. wide regions of the entire […]

When ECT proved to be ineffective for schizophrenia, it was: a. abandoned as a means of treatment for psychiatric disorders. b. used to enhance memory. c. used to stimulate the immune system. d. used to treat other mental illnesses. Closing […]

The somatic division of the nervous system carries signals from the _____ to the _____. a. senses; central nervous system b. organs; autonomic nervous system c. organs; sympathetic nervous system d. senses; peripheral nervous system One important factor to consider […]

The SCN is located just above the: a. optic chiasm. b. thalamus. c. hypothalamus. d. visual cortex. The ability of the brain to change its anatomy over time, within limits, is known as: a. plasticity. b. regression. c. connectivity. d. […]

Each of the following requires a Ph.D. except for a ____. a. clinical psychologist b. counseling psychologist c. school psychologist d. social worker Biological psychology is a field of study and a ____. a. fundamental property b. string theory c. […]

Korsakoff’s syndrome: a. is marked by severe memory impairments. b. results from too much thiamine. c. results from lack of oxygen to the brain. d. is due to a breakdown of the blood-brain barrier. At the microscopic level, we find […]

In adult humans, the taste buds are: a. evenly distributed across the front half of the tongue. b. evenly distributed across the whole tongue. c. concentrated near the center of the tongue. d. concentrated along the outside edge of the […]

Suppose you fell into a cave and lost your watch. Without any time cues, your circadian rhythm would: a. increase dramatically over time. b. cease to exist. c. decrease over time. d. remain relatively stable. The autonomic nervous system is […]

Almost all humans have 23 pairs of which of the following? a. RNA b. Chromosomes c. Genes d. Corduroys When the PER and TIM levels are low, they result in: a. narcolepsy. b. insomnia. c. sleepiness. d. wakefulness. Answer: D […]

Measuring the number of dopamine receptors occupied by a radioactive drug in people with schizophrenia led to the finding that: a. the dopamine hypothesis is incorrect. b. dopamine D2 receptor levels were low. c. excessive dopamine release occupies a greater […]

The “decision” for a neuron to fire is determined by the: a. number of EPSPs only. b. spontaneous firing rate. c. number of IPSPs only. d. ratio of EPSPs to IPSPs. Studies of nonhuman language abilities seem to indicate that […]

Psychologists typically define emotion in terms of the following three components: a. actions, cognitions, and emotions b. feelings, actions, and emotions c. cognitions, actions, and emotions d. cognitions, feelings, and actions What is the result of damage to the primary […]

Researchers proposed that all information initially entered a short-term storage, where it stayed until the brain had time to ____ it into long-term memory. a. transpose b. rehearse c. consolidate d. transfer Exposure to an extremely salty substance decreases sensitivity […]

Sleep spindles originate from: a. PGO waves. b. sudden stimuli. c. SCN neurons. d. interactions between the thalamus and cortex. What can people with conductive deafness hear? a. high-pitched sounds but not low-pitched sounds b. their own voice better than […]

Drugs that, in some cases, have reduced the frequency of sexual offenders work by: a. reducing testosterone levels. b. increasing estrogen levels. c. inducing high but equal levels of testosterone and estrogen. d. mimicking the effects of alpha-fetoprotein. Which type […]

Avoiding foods with lecithin, such as eggs and peanuts, would affect which neurotransmitter level the most? a. acetylcholine b. serotonin c. GABA d. endorphin What does an electroencephalograph measure? a. action potentials in an individual neuron b. the electrical resistance […]

Taste and other mouth sensations contribute to: a. hunger. b. satiety. c. thirst. d. overeating. The following are true about drugs that prevent testosterone from being aromatized to estradiol EXCEPT that? a. they block some of the organizing effects of […]

One way that over-the-counter cold remedies work is by: a. increasing parasympathetic activity. b. decreasing sympathetic activity. c. increasing sympathetic activity. d. blocking all autonomic activity. In general, what can we say about recovery for brain-damaged patients in the future? […]

Mammals have circadian rhythms: a. only for their sleep/activity cycle. b. only for frequency of eating and drinking. c. for sleep and body temperature only. d. for a variety of activities, including sleep. One major problem with studies that use […]

Researchers have found that the amino acid glycine: a. competes with the effects of glutamate and, therefore, blocks those synapses. b. can be converted into dopamine or serotonin in different brain areas. c. increases the effectiveness of other antipsychotic drugs. […]

____ contributes to female development, including some aspects of brain differentiation. a. Testosterone b. Estradiol c. Androgen d. Estrogen What type of cell responds to a pattern of light in a particular orientation anywhere within its large receptive field, regardless […]

Which of the following accurately describes H.M.’s memory problems? a. impaired short-term memory, but not long-term memory b. impaired procedural memory, but not declarative memory c. impaired explicit memory, but not implicit memory d. impaired personal memories, but not impersonal […]