MCAT Biology - Gold Standard
Biology
This MCAT Biology deck from Gold Standard MCAT is designed to help you master the fundamental concepts that are critical for success on the exam. Whether you're reviewing cellular biology, genetics, biochemistry, or physiology, this deck covers all the high-yield topics you need to know.
Sample Data
| Front | Define a "negative feedback" loop and describe one involving the anterior pituitary gland. |
| Back | Changes in the output of a system turn on connecting mechanisms that bring the output back to normal (homeostasis). Examples above include secretions from the adrenal cortex (i.e. cortisol), the thyroid gland (i.e. thyroxin), etc.
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| Front | What is osmosis? What would happen to a cell if it were placed in a hypertonic vs hypotonic solution? |
| Back | Osmosis is the diffusion of water from a region of lesser [solute] to a region of greater [solute].Hypertonic has higher osmotic pressure (= higher [solute] than a comparison solute thus water flows out of a cell causing it to shrink; hypotonic is the opposite thus the cell swells; isotonic = isosmotic = no change.
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| Front | How can you differentiate crossing the membrane by simple diffusion vs carrier-mediated (facilitated) transport? |
| Back | Simple diffusion: the greater the concentration gradient, the greater the transport rate across the plasma membrane.Carrier-mediated transport: increasing the concentration gradient increases the transport rate up to a maximum rate, at which point all membrane carriers are saturated.
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