In the intestine, ________ ensure(s) that most digested nutrients pass through the epithelial cells and not between them
A) ground substance
B) tight junctions
C) desmosomes
D) the plasma membrane
E) gap (communicating) junctions
B
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Gustatory cells within a taste bud are specialized neuroepithelial cells that have a(n) ________ life span.
A. 1 year B. 7?10 day C. 24-hour D. 2?4 week E. undetermined
A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being affected?
A. nucleus B. mitochondrion C. centriole D. ribosomes E. microtubule
What is the correct order for the phases of the uterine cycle, beginning with day 1?
A. Menstrual - proliferative - secretory B. Proliferative - secretory - menstrual C. Secretory - proliferative - menstrual D. Menstrual - secretory - proliferative E. Proliferative - menstrual - secretory
Answer the following statements true (T) or false (F)
1. The liver carries out the first steps in both protein and carbohydrate metabolism. 2. The liver produces plasma proteins such as prothrombin and fibrinogen. 3. Glucose is the preferred energy food for the cells. 4. The first step in carbohydrate catabolism is glycolysis. 5. Glycolysis occurs in the mitochondria.