Gwen is investigating how exercise affects the rate at which she can squeeze a ball. after several minutes, she begins to experience muscle soreness and fatigue. she knows that this means her muscles are beginning to run out of oxygen. which process is likely causing the soreness in her muscle cells?
a. lactic acid fermentation
b. photosynthesis
c. alcohol fermentation
d. krebs cycle

Lactic acid fermentation.

Explanation:

During strenuous muscle activity the liver converts glucose or any other sugars into ATP, anaerobically. This causes oxygen debt, due to the accumulation of lactic acid and carbon dioxide, thats needs to be repaid after exercising.

After exercise the muscles uses oxygen to oxidise the high level of lactic acid, resulting in painful muscles.

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

picture a world where computers are building made-to-order personalized robotic arms and synthetic organs, drones are circulating above mars! due to the rapid growth of technology, the future has never been more unpredictable, and it presents a huge challenge in education: we are teaching students how to work in a future that we have never been unsure of. it is widely predicted that in eight years’ time, there will be more jobs in the fields of science, mathematics, technology and engineering than in any other discipline. and, as the technology continues to develop, it will soon become clear that addressing social problems will involve more innovative thinking, and analytical and technical knowledge than ever before. undeniably, there are no subjects that encourage innovative and creative thinking, deep thought, problem solving and independence more than the stem subjects. while it is widely commented on that there is a need to reimagine the ways stem subjects are taught in schools by embracing a more interactive and innovative approach to appeal to more students, it should come as no surprise that some of the most reputable educational organizations in the world are already implementing changes to embrace stem. harvard, for example, announced in 2014 that they were increasing their computer science faculty by over 50% and has since introduced computer science as a core subject for all freshmen. the urgency of supporting stem subjects at a young age is becoming more relevant than ever, as adopting a keen interest in the curricula needs to happen early. however, beyond the age issue is one of gender.

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