Which of the following represents the correct order of components in an involuntary spinal reflex arc?
A. Sensory neuron, interneuron, sensory receptor, motor neuron, effector
B. Sensory receptor, motor neuron, interneuron, sensory neuron, effector
C. Interneuron, sensory receptor, sensory neuron, effector, motor neuron
D. Effector, sensory neuron, motor neuron, interneuron, sensory receptor
E. Sensory receptor, sensory neuron, interneuron, motor neuron, effector
Answer: E
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The bond between adjacent amino acids is a(n) __________.
amino bond peptide bond covalent bond ionic bond peptide and covalent bond
The descending spinal tract that crosses to the opposite side of the body within the medulla oblongata is the ________ tract
A) lateral corticospinal B) anterior corticospinal C) rubrospinal D) reticulospinal E) vestibulospinal
Select the correct statement about absorption.
A) Eighty percent of ingested materials have been absorbed by the end of the large intestine. B) Carbohydrates diffuse across the villus epithelium and are then actively transported into blood capillaries. C) If intact proteins are transported across the villus epithelium, an immune response may be generated. D) Amino acid transport is linked to chloride transport.
Which of the following is a result of convoluted coiling and folding that grants protein its final three-dimensional shape?
A) primary structure B) secondary structure C) tertiary structure D) quaternary structure E) pentagonal