Neurons in the respiratory centers of the brain that respond to pH are examples of
A) baroreceptors.
B) nociceptors.
C) thermoreceptors.
D) mechanoreceptors.
E) chemoreceptors.
E) chemoreceptors.
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The duplication of DNA is called ________, the copying of DNA to mRNA is called ________, and the reading of the mRNA by the cell to make a protein is called ________
A) replication; transcription; translation B) interphase; replication; active transport C) replication; translation; transcription D) mitosis; duplication; protein synthesis E) reproduction; duplication; initiation
The sodium-potassium pump moves ions against their concentration gradients and helps maintain an electrochemical gradient across the plasma membrane
Indicate whether this statement is true or false.
Helper T cells bind to antigen complexes with class II MHC proteins, while cytotoxic T cells bind to antigen complexes with class I MHC proteins.
Answer the following statement true (T) or false (F)
A general characteristic of connective tissue is that it
A. consists of cells with much extracellular material (matrix) between them. B. is commonly found lining body cavities. C. covers the outside of organs. D. has no blood supply to the tissue. E. contracts.