Select the incorrect statement about vaults
a. They may play a role in drug resistance in cancer cells.
b. They are numerous and relatively large organelles.
c. They are specialized transport vesicles within nuclear pores.
d. They may transport ribosomal subunits out of the nucleus.
e. They are not visible by ordinary staining techniques.
C
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When competing in a swimming meet, participants release fuel energy from their muscles. What does that activity produce?
A) Heat B) More energy C) Glucose D) Red blood cells
Preganglionic neurons of the sympathetic division originate in the
A. dorsal horns of the craniosacral brain and spinal cord. B. ventral horns of the cervical and sacral spinal cord. C. dorsal horns of the thoracolumbar spinal segments. D. lateral horns of the thoracolumbar spinal segments. E. ventral horns of the cervical and thoracic spinal segments.
Structurally, the blood-brain barrier exists because
A) normal blood flow is at a pressure too high for the delicate brain tissue. B) the hypothalamus regulates the permeability of the blood vessels. C) the endothelial cells lining the CNS are extensively interconnected by tight junctions. D) only water-soluble compounds are permitted to enter by passive diffusion. E) None of the answers are correct.
Glycoproteins are protein molecules with molecules of glycogen attached to the amino acid side chains.
Answer the following statement true (T) or false (F)