What is the role of mast cells in the inflammatory response?
What will be an ideal response?
Ans:
They release chemicals that dilate blood vessels at the wound site.
Mast cells do not release chemicals that result in clotting at the wound site.
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Natural selection acting on a population may NOT favor
a. individuals at the left end of the range of variation. b. individuals at the right end of the range. c. extreme individuals at both ends of the range. d. the intermediate individuals within the range. e. obligate asexually reproducing organisms.
Which of the following statements about the sodium-potassium pump is true?
a. It transports hydrogen ions out of the cell. b. It transports 3 sodium ions out of the cell in exchange for 2 potassium ions. c. It transports 2 sodium ions out of the cell in exchange for 2 potassium ions. d. It transports 2 sodium ions out of the cell in exchange for 3 potassium ions. e. It transports water directly out of the cell.
Someone who has diabetes insipidus has not enough ________
Fill in the blank(s) with correct word
Sexual reproduction in the cellular slime mold Dictyostelium discoideum involves the production of special spores called ________.
A. amoeba flagellates B. macrocysts C. discoidia D. sporozoites