Which statement is false?
a. High concentrations of ATP inhibit the
formation of more ATP.
b. The ATP concentration in cells actually
decreases at first when cells need large
supplies of energy.
c. When ATP concentration declines, enzymatic
activity that produces ATP declines.
d. Cells constantly adjust their metabolic
reactions to provide energy whenever it is
needed.
e. The activity of many different enzymes
influences the supply of ATP in cells.
Answer: c
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Cytokine signaling of phagocytes is an example of:
A. autocrine signaling. B. endocrine signaling. C. paracrine signaling. D. juxtacrine signaling.
Which of the following statements comparing hemidesmosomes with desmosomes is TRUE?
A. Hemidesmosomes are anchorage junctions but desmosomes are not. B. Hemidesmosomes interact with actin filaments while desmosomes interact with intermediate filaments. C. Hemidesmosomes anchor cells to the ECM while desmosomes anchor cells to other cells. D. Hemidesmosomes are found in plant cells while desmosomes are found in animal cells. E. Both hemidesmosomes and desmosomes associate with integrin, but not cadherin molecules.
what disease is caused by Filobasidiella neoformans?
What will be an ideal response?
Although antivenom can save lives, it can also cause what type of reaction in certain patients?
A) type II hypersensitivity B) autoimmune type III hypersensitivity C) nonautoimmune type III hypersensitivity D) type I hypersensitivity E) type IV hypersensitivity