ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
3rd Edition
ISBN: 9780135964422
Author: Urry
Publisher: PEARSON
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Textbook Question
Chapter 37.4, Problem 3CC
MAKE CONNECTIONS Name one or more membrane activities that occur both in fertilization of an egg and in neurotransmission across a synapse (see Figure 36.14).
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Given the steps shown below, which of the following is the correct sequence for transmission at a
chemical synapse?
1. neurotransmitter binds with receptor
2. sodium ions rush into neuron's cytoplasm
3. action potential depolarizes the presynaptic membrane
4. ion channel opens to allow particular ion to enter cell
5. synaptic vesicles release neurotransmitter into the synaptic cleft
O 1, 2, 3, 4, 5
O 5, 1, 2, 4, 3
O 2, 3, 5, 4, 1
O4, 3, 1, 2, 5
O 3, 2, 5, 1, 4
MAKE CONNECTIONS What effect would you expect if you depolarizedthe neurons in the VTA (see Concept 48.3)? Explain.
problem53
Chapter 37 Solutions
ETEXT CAMPBELL BIOLOGY IN FOCUS INSTANT
Ch. 37.1 - Prob. 1CCCh. 37.1 - Describe the basic pathway of information flow...Ch. 37.1 - WHAT IF? How might increased branching of an axon...Ch. 37.2 - Under what circumstances could ions flow through...Ch. 37.2 - WHAT IF? Suppose a cells membrane potential shifts...Ch. 37.2 - Prob. 3CCCh. 37.3 - How do action potentials and graded potentials...Ch. 37.3 - In multiple sclerosis (from the Greek skleros,...Ch. 37.3 - Prob. 3CCCh. 37.3 - WHAT IF? Suppose a mutation caused gated sodium...
Ch. 37.4 - Prob. 1CCCh. 37.4 - Organophosphate pesticides work by inhibiting...Ch. 37.4 - MAKE CONNECTIONS Name one or more membrane...Ch. 37 - What happens when a resting neuron's membrane...Ch. 37 - Prob. 2TYUCh. 37 - Prob. 3TYUCh. 37 - Why are action potentials usually conducted in one...Ch. 37 - Which of the following is a direct result of...Ch. 37 - Suppose a particular neurotransmitter causes an...Ch. 37 - Prob. 7TYUCh. 37 - Prob. 8TYUCh. 37 - DRAW IT Suppose a researcher inserts a pair of...Ch. 37 - Prob. 10TYUCh. 37 - FOCUS ON EVOLUTION An action potential is an...Ch. 37 - Prob. 12TYUCh. 37 - SYNTHESIZE YOUR KNOWLEDGE The rattlesnake alerts...
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- Ocular dominance columns result from competition between LGN neurons of the opposite eyes for Stellate cells . (a) What is the key "ingredient" that enables a neuron to successfully compete for Stellate cells? (b) How is this ingredient demonstrated by Hubel and Wiesel using cats? (c) How is this ingredient demonstrated in more recent experiments using a toxin?arrow_forwardPlease asaparrow_forwardConsider the circuit from Q5 (above). We want to add another inhibitory neuron to this circuit to increase the likelihood that neuron D will have an action potential. With which cell (A, B, C or D) should our new inhibitory neuron make a synapse to make it more likely that the post - synaptic neuron will have anaction potential?The diagram below shows a simple neural circuit with three pre - synaptic cells labelled 'A', 'B' and 'C', and a post - synaptic cell labelled 'D ' (see image below). Assume neurons A and B each have outputs of +2 and neuron C has output of -1.arrow_forward
- Transient receptor potential (TRP) channels are ion channels found on animal cells. Some TRP channels are activated by spice molecules, such as garlic, chilli pepper, and wasabi. To study the effects of raw and cooked garlic on the opening of TRP channels, researchers isolated 10 neurons containing the TRP channels. Droplets of raw garlic extract were added to five of the neurons, and droplets of cooked garlic extract were added to the remaining five neurons. Both groups of neurons were monitored to see whether the channels were opening in response to the different types of garlic extracts. TRP channels were activated and opened in the neurons treated with raw garlic extract but not in the neurons treated with cooked garlic. Identify the manipulated, responding, and controlled variables in the experiment described above. Types of Variables Manipulated Responding Controlled Number: Answer Answer Answer Answer Variable: Number of extract droplets Number of neurons Addition…arrow_forwardSensory neurons in the homeostatic pathway demonstrate spontaneous activity. For a neuron, what does spontaneous activity mean? Describe a mechanism by which a neuron would demonstrate spontaneous activity. (Good inspiration would be to look at the mechanism of behavior and effect on membrane potentials of HCN channels in the heart.) Assuming these sensory neurons used FM communication, how do they encode increases in stimulation and also to encode decreases in stimulation of receptors?arrow_forwardsynaptobrevin A-is activated by Sodium cations B-is an extracellular signalling molecule C-binds and stimulates post synaptic receptors D-is a synaptic protein involved in vesicular fusion with cytoplasmic membranearrow_forward
- Action potentials and graded potentials both…A) Propagate long distances through neural structures, without attenuation in their amplitude.B) Can directly excite or inhibit neurons.C) Can propagate at speeds of up to 120 meters per second.D) Involve voltage-gated Nav and Kv channels.E) Are capable of triggering synaptic exocytosis in neurons of the vertebrate retinaarrow_forwardWhich of the following would you NOT expect with respect to variation in neural conduction velocity? Neural conduction speed increases over developmental time as Schwann cells synthesize myelin sheaths, insulating neurons Neural conduction velocity is higher in invertebrate species with insulating sheaths functionally equivalent to vertebrate myelin Neurons and species with larger axon diameters should have greater conduction velocities Neural networks with greater serial processing (i.e., lines of connecting neurons) should have greater neural conduction velocities. The thyroid hormones (triiodothyronine and thyroxine) have a range of roles in regulating growth and metabolism. Thyroid hormones act throughout the body to regulate protein synthesis, long bone growth, and neural maturation. This represents an ______ effect of thyroid hormones. At the same time, through some unknown mechanism, application of thyroid hormones results in an immediate reduction in body temperature, which…arrow_forwardExplain in few sentences !! how a neuron can repair itself. What increases the likelihood of repair; what decreases the likelihood of repair? If repair is not possible, what other options are possible to innervate the effector organ?arrow_forward
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