Which of the following is incorrect about inflammation?
A. Fever could be beneficial to inhibiting the pathogen.
B. Serotonin causes smooth muscle contraction.
C. Inflammation can last hours to years.
D. Pyrogens cause vasodilation and increased capillary permeability.
E. Basophils and mast cells release histamine.
Answer: D
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Food poisoning generally results from the ingestion of food containing microbial toxins
Indicate whether the statement is true or false.
The mutual attraction of opposite charges holds atoms together as molecules in a(n) _____ bond
a. ionic c. polar covalent b. hydrogen d. nonpolar covalent
The organelle that pinches off portions of its
membrane to form a compartment used for storage or transport is the a. mitochondrion. b. chloroplast. c. nucleolus. d. Golgi body. e. vesicle.
Imagine that you are conducting experiments and you have a cell line that responds to an external hormonal signal by entering the apoptotic pathway. How would these cells respond to this hormonal signal if you could instantly and completely inactivate the Bcl-2 protein?
a) none of the choices is correct b) Since Bcl-2 normally protects cells from apoptosis, loss of this protein would prevent apoptosis. c) Since Bcl-2 normally promotes apoptosis, loss of this protein would prevent apoptosis. d) Since Bcl-2 normally protects cells from apoptosis, loss of this protein would cause these cells to go through apoptosis.