1) which of the following best describes what causes plasma cells to form during a humoral immune response?
a) memory b cells signal phagocytes to attack infected cells and divide, producing plasma cells.
b) the antibodies on the surface of b cells bind to antigens, and the b cells grow and divide, producing plasma cells.
c) the antigens on the surface of a pathogen attack healthy cells, and the resulting inflammation signals t cells to divide, producing plasma cells.
d) memory t cells recognize antigens and signal t lymphocytes to divide, producing plasma cells
2) damage to which of the following structures would be most likely to result in an increase in mutations in a man's sperm cells?
a) epididymis
b) testes
c) urethra
d) scrotum

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

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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