What part of the eye controls the amount of light entering through the pupil?
What will be an ideal response?What will be an ideal response?
iris
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Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?
a) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released b) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes c) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes d) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released e) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released
Which of the following is NOT a characteristic of connective tissues in general?
A. The cells are packed tightly together, as they are in epithelial tissues. B. Most connective tissues are well-supplied with blood vessels. C. The ground substance can vary from liquid to solid. D. Connective tissues contain an abundance of extracellular matrix. E. All of these are characteristics of connective tissues in general.
The Haldane effect means that
A. as hemoglobin releases CO2, the ability to pick up O2 increases. B. as hemoglobin releases bicarbonate ions, the ability to pick up chloride ions increases. C. as hemoglobin releases O2, the ability to pick up CO2 increases. D. as hemoglobin releases O2, the ability to pick up CO2 decreases.
Which of the following structures is located superior to the nasus?
A) 35 B) 4 C) 32 D) 5 E) 30