Category: 6. Assistant Staff Nurse

In a cell with higher intracellular K⁺, the driving force for potassium at rest is mainly A Influx through pumps

A cell placed in a solution with 300 mOsm inside and 450 mOsm outside will most likely A Gain water

In negative feedback control of blood glucose, the “sensor” that detects high glucose is mainly the A Adrenal cortex cells

Light entering the eye is first refracted most strongly by the A Cornea B Lens only C Retina layer D

A hyperpolarized neuron membrane is most likely due to increased movement of A Sodium inflow B Potassium outflow C Calcium

When a cell is placed in a hypotonic solution, the cell usually A Shrinks quickly B Stops all transport C

The cell uses “selective permeability” mainly to A Control substance entry B Produce more heat C Stop all diffusion D

The part of the eye that focuses light onto the retina for clear vision is the A Vitreous gel B

A stable internal body temperature is maintained mainly by the body’s A Blood clotting B Vision pathway C Thermoregulation D

The body maintains a stable internal environment despite external changes mainly by A Metabolism only B Growth process C Homeostasis