Which of the following molecules is capable of detecting light rays that strike the photopigments in the retina?
a) cGMP
b) opsin portion of rhodopsin
c) cis-retinal
d) melanin
e) retinal isomerase
c
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The lateral horns of the spinal cord contain
A. axons of motor neurons and interneuron cell bodies. B. axons of sensory and motor neurons. C. cell bodies of somatic sensory neurons. D. axons of sensory neurons and interneuron cell bodies. E. cell bodies of autonomic motor neurons.
Which of the following statements is correct regarding the red and white locomotor muscles of fish?
A) White muscle exhibits maximal power output at lower tail-beat frequencies. B) Fish tend to use red muscle for slow, often continuous swimming. C) Red muscle tends to be more glycolytic. D) Red muscle shows maximal power output at high tail-beat frequencies.
A substance received or given off by your body will likely pass through which tissue type?
A) muscle tissue B) epithelial tissue C) nervous tissue D) connective tissue
Which statement about the bronchi is false?
A. The main bronchi and all of their further branches make up the bronchial tree. B. The right bronchus is slightly more horizontal than the left bronchus due to the location of the heart. C. The right and left main bronchi each enter their respective lung at the hilum. D. All of these statements are false.