Which of the following are ways in which binding of an intercellular chemical messenger with a cell's receptor can bring about a cellular response?
A. opening or closing of specific ionic channels in the plasma membrane
B. activation of an intracellular second-messenger system
C. promoting or inhibiting the transcription of genes that code for the synthesis of cellular proteins
D. activating or inhibiting intracellular enzymes
E. All of the choices are correct.
E
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Which is not a type of lymphatic cell?
A. Lymphocyte B. Dendritic cell C. Macrophage D. Astrocyte E. Nurse cell
Answer the following statements true (T) or false (F)
1. Jaundice will occur if the cystic duct is blocked and bile is not able to drain from the gallbladder. 2. Pancreatic juice helps neutralize the hydrochloric acid produced in the stomach. 3. People on long-term antibiotic therapy that has killed most of the bacteria in the large intestine may develop blood clotting problems. 4. The splenic flexure is where the ascending colon becomes the transverse colon. 5. The splenic flexure is where the transverse colon becomes the descending colon.
Cats with uroliths may develop __________________ (blood in the urine)
Fill in the blank(s) with correct word
Which of the following is NOT a function of the urinary system?
A. It is involved in the production of white blood cells. B. It is involved in regulating blood concentration of Ca2+. C. It is involved in the regulation of blood pressure. D. It is involved in the production of red blood cells.