Answer:
The presence of a larger proportion of unsaturated fatty acids in membranes imparts them fluidity at lower temperatures as required to maintain their normal functioning.
Explanation:
The proportion of unsaturated and saturated fatty acids in membranes regulates their fluidity. At lower temperatures, membranes become more rigid. To maintain their normal fluidity, the proportion of the unsaturated fatty acids in membranes is increased. The unsaturated fatty acids have double bonds in their hydrocarbon tails which in turn do not allow their tight packing and impart fluidity to the membrane core.
At higher temperatures, membranes become more fluid and therefore, the proportion of the unsaturated fatty acids is reduced. The tissues of reindeer at the body's extremities such as those near hooves are exposed to surroundings and thereby, lose heat and have lower temperatures. To maintain the fluidity of membranes, the cells of these tissues incorporate more of the unsaturated fatty acids in their membranes as compared to the tissues in the upper legs where the body temperature is relatively higher.
Answer:
Prions
Explanation:
Prions are misfolded proteins found in the brain, they cause other proteins to fold the same way. The cell can't degrade the proteins which leads to an accumulation of these misfolded proteins and the development of neurodegenerative diseases like Alzheimer and Parkinson
DO You Still need an anwser to this question
Onion is an underground crop and it have no involvement in the photosynthesis. So it have no chloroplast in their cell.
Hope this helps!
-Payshence
Answer:
<h2>Endangered: Still around but at risk of going extinct (example: tiger)</h2><h2>Extinct: Gone forever (example: wooly mammoth)</h2>
Explanation:
An endangered species is one with a reduced population. These species can easily become extinct if all the remaining members die.
<h2>I'm always happy to help :)</h2>
