Clicker Questions For Test 3

13 Questions | By Ncannatella | Last updated: Mar 19, 2022 | Total Attempts: 37

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Animal Development

Questions and Answers

1.

If Ca++ is not present in a myofibril, a muscle cannot contract because
- A.
  
  ATP cannot bind to myosin
- B.
  
  Myosin cannot bind from tropomyosin
- C.
  
  Myosin cannot bind to actin
- D.
  
  ADP cannot be converted to ATP
2.

Which of the following is the correct statement about cells of the human retina?
- A.
  
  Cone cells can detect color, but rod cells cannot
- B.
  
  Cone cells are more sensitive to light than rod cells
- C.
  
  Cone cells, but not rod cells, have a visual pigment
- D.
  
  Rod cells are most highly concentrated in the center of the retina
3.

When an odorant molecule binds to an olfactory receptor,
- A.
  
  The odorant molecule is transported into the sensory cell
- B.
  
  The odorant molecule serves as a neurotransmitter
- C.
  
  The odorant molecule results in a change in the membrane potential of the sensory cell
- D.
  
  The odorant molecule destroys the neurotransmitters
4.

The pathway leading to the perception of sound by mammals begins with the
- A.
  
  Hair cells of the organ of Corti, which rests on the basilar membrane
- B.
  
  Hair cells of the organ of Corti, which rests on the hympanic membrane
- C.
  
  Hair cells of the organ of Corti, which rests on the tectorial membrane
- D.
  
  Hair cells of the organ of Corti coming in contact with the tectorial membrane
5.

Why does your arm feel cold when you reach inside the refrigerator to get a container of milk?
- A.
  
  Circulating levels of prostoglandins increase
- B.
  
  The temperature of the blood circulating to the arm decreases
- C.
  
  Thermoreceptors in the skin undergo accomodation, which increases their sensitivity
- D.
  
  Theremoreceptors send signals to the posterior hypothalamus
6.

sensory receptors
- A.
  
  Produce different types of action potentials based on the stimulus
- B.
  
  Respond to a single type of stimulus (heat, pressure, light, etc)
- C.
  
  Increase the frequency of the action potentials when stimulated
7.

Which of the following structures or regions is incorrectly paired with its function?
- A.
  
  Limbic system-motor control of speech
- B.
  
  Medulla oblongata-homeostatic control
- C.
  
  Cerebellum-coordination of movement and balance
- D.
  
  Corpus callosum-communication between the left and right cerebral cortices
8.

The establishment and expression of emotions involves the
- A.
  
  Frontal lobes and limbic system
- B.
  
  Frontal lobes and parietal loes
- C.
  
  Parietal lobes and limbic system
- D.
  
  Frontal and occipital lobes
9.

What part of the brain controls the heart rate?
- A.
  
  Neocortex
- B.
  
  Medulla
- C.
  
  Thalamus
- D.
  
  Pituitary
10.

Which of the following activities would be associated with the parasympathetic division of the nervous system?
- A.
  
  Rest and digestion
- B.
  
  Release of both acetylcholine and epinephrine
- C.
  
  Increased metabolic rate
- D.
  
  Fight-or-flight response
11.

Which of the following is associated with the evolution of a central nervous system?
- A.
  
  Bilateral symmetry
- B.
  
  Radial symmetry
- C.
  
  Nerve nets
- D.
  
  Excitable membranes
12.

Neurotransmitters are released from axon terminals via
- A.
  
  Osmosis
- B.
  
  Active transport
- C.
  
  Diffusion
- D.
  
  Transcytosis
- E.
  
  Exocytosis
13.

The surface on a neuron the discharges synaptic vesicles is the
- A.
  
  Dendrite
- B.
  
  Axon hilock
- C.
  
  Node of Ranvier
- D.
  
  Postsynaptic membrane
- E.
  
  Presynaptic membrane